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Liu Y, Li J, Deng X, Chi SS, Wang J, Zeng H, Jiang Y, Li T, Liu Z, Wang H, Zhang G, Deng Y, Wang C. Regulating Electrolyte Solvation Structures via Diluent-Solvent Interactions for Safe High-Voltage Lithium Metal Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311812. [PMID: 38453675 DOI: 10.1002/smll.202311812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Local high concentration electrolytes (LHCEs) have been proved to be one of the most promising systems to stabilize both high voltage cathodes and Li metal anode for next-generation batteries. However, the solvation structures and interactions among different species in LHCEs are still convoluted, which bottlenecks the further breakthrough on electrolyte development. Here, it is demonstrated that the hydrogen bonding interaction between diluent and solvent is crucial for the construction of LHCEs and corresponding interphase chemistries. The 2,2,2-trifluoroethyl trifluoromethane sulfonate (TFSF) is selected as diluent with the solvent dimethoxy-ethane (DME) to prepare a non-flammable LHCE for high voltage LMBs. This is first find that the hydrogen bonding interaction between TFSF and DME solvent tailors the electrolyte solvation structures by weakening the coordination of DME molecules to Li+ cations and allows more participation of anions in the first solvation shell, leading to the formation of aggregates (AGGs) clusters which are conducive to generating inorganic solid/cathodic electrolyte interphases (SEI/CEIs). The proposed TFSF based LHCE enables the Li||NCM811 (LiNi0.8Mn0.1O2) batteries to realize >80% capacity retention with a high average Coulombic efficiency of 99.8% for 230 cycles under aggressive conditions (NCM811 cathode: 3.4 mAh cm-2, cut-off voltage: 4.4 V, and 20 µm Li foil).
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Affiliation(s)
- Yuqi Liu
- Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
| | - Jin Li
- Research & Development Center, GAC Aion New Energy Automobile Co., Ltd., Guangzhou, 510640, China
| | - Xiaolan Deng
- Zen Semiconductor Corporation, Guangzhou, 510000, China
| | - Shang-Sen Chi
- Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jun Wang
- Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Huipeng Zeng
- Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yidong Jiang
- Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
| | - Tingting Li
- ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan, Shenzhen, 518057, China
| | - Zhongbo Liu
- Shenzhen CAPCHEM Technology Co. Ltd., Shenzhen, 518118, China
| | - Hui Wang
- Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
| | - Guangzhao Zhang
- Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
- Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministration of Education, Guangzhou, 510640, China
| | - Yonghong Deng
- Department of Materials Science & Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chaoyang Wang
- Research Institute of Materials Science, South China University of Technology, Guangzhou, 510640, China
- Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministration of Education, Guangzhou, 510640, China
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Li Z, Chen X, Li W, Li J, Zhang Y, Lu L, Luo Y, Zhang C, Gao F, Liu J, Zhan C, Qiu X. High-Concentrated Binary-Salt Ether Electrolytes for High-Voltage Lithium Metal Batteries with Ni-Rich Cathode. ACS APPLIED MATERIALS & INTERFACES 2024; 16:37288-37297. [PMID: 38953553 DOI: 10.1021/acsami.4c06491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
The incompatibility of ether electrolytes with a cathode dramatically limits its application in high-voltage Li metal batteries. Herein, we report a new highly concentrated binary salt ether-based electrolyte (HCBE, 1.25 M LiTFSI + 2.5 M LiFSI in DME) that enables stable cycling of high-voltage lithium metal batteries with the Ni-rich (NCM83, LiNi0.83Co0.12Mn0.05O2) cathode. Experimental characterizations and density functional theory (DFT) calculations reveal the special solvation structure in HCBE. A solvation structure rich in aggregates (AGGs) can effectively broaden the electrochemical window of the ether electrolyte. The anions in HCBE preferentially decompose under high voltage, forming a CEI film rich in inorganic components to protect the electrolyte from degradation. Thus, the high-energy-density Li||NCM83 cell has a capacity retention of ≈95% after 150 cycles. Significantly, the cells in HCBE have a high and stable average Coulombic efficiency of over 99.9%, much larger than that of 1 M LiPF6 + EC + EMC + DMC (99%). The result emphasizes that the anionic-driven formation of a cathode electrolyte interface (CEI) can reduce the number of interface side reactions and effectively protect the cathode. Furthermore, the Coulombic efficiency of Li||Cu using the HCBE is 98.5%, underscoring the advantages of using ether-based electrolytes. This work offers novel insights and approaches for the design of high-performance electrolytes for lithium metal batteries.
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Affiliation(s)
- Zelin Li
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinping Chen
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wenting Li
- Institute of Tsinghua University Hebei, Beijing 100084, China
| | - Jie Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yujuan Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Lisi Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yao Luo
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chao Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Fei Gao
- Technology Center of SVOLT Energy Technology Co., Ltd., Wuxi 214000, China
| | - Jing Liu
- Technology Center of SVOLT Energy Technology Co., Ltd., Wuxi 214000, China
| | - Chun Zhan
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinping Qiu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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3
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Pradhan A, Nishimura S, Kondo Y, Kaneko T, Katayama Y, Sodeyama K, Yamada Y. Stabilization of lithium metal in concentrated electrolytes: effects of electrode potential and solid electrolyte interphase formation. Faraday Discuss 2024. [PMID: 39016534 DOI: 10.1039/d4fd00038b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Lithium (Li) metal negative electrodes have attracted wide attention for high-energy-density batteries. However, their low coulombic efficiency (CE) due to parasitic electrolyte reduction has been an alarming concern. Concentrated electrolytes are one of the promising concepts that can stabilize the Li metal/electrolyte interface, thus increasing the CE; however, its mechanism has remained controversial. In this work, we used a combination of LiN(SO2F)2 (LiFSI) and weakly solvating 1,2-diethoxyethane (DEE) as a model electrolyte to study how its liquid structure changes upon increasing salt concentration and how it is linked to the Li plating/stripping CE. Based on previous works, we focused on the Li electrode potential (ELi with reference to the redox potential of ferrocene) and solid-electrolyte-interphase (SEI) formation. Although ELi shows a different trend with DEE compared to conventional 1,2-dimethoxyethane (DME), which is accounted for by different ion-pair states of Li+ and FSI-, the ELi-CE plots overlap for both electrolytes, suggesting that ELi is one of the dominant factors of the CE. On the other hand, the extensive ion pairing results in the upward shift of the FSI- reduction potential, as demonstrated both experimentally and theoretically, which promotes the FSI--derived inorganic SEI. Both ELi and SEI contribute to increasing the Li plating/stripping CE.
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Affiliation(s)
- Anusha Pradhan
- SANKEN, Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Shoma Nishimura
- SANKEN, Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Yasuyuki Kondo
- SANKEN, Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Tomoaki Kaneko
- Department of Computational Science and Technology, Research Organization for Information Science and Technology (RIST), 1-18-16, Hamamatsucho, Minato-ku, Tokyo 105-0013, Japan
| | - Yu Katayama
- SANKEN, Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Keitaro Sodeyama
- Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-1, Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yuki Yamada
- SANKEN, Osaka University, 8-1, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
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Pham TD, Kim J, Oh HM, Kwak K, Lee KK. Synergistic Effects of Bisalt Additives in High-Voltage Rechargeable Lithium Batteries. CHEMSUSCHEM 2024:e202400636. [PMID: 38828662 DOI: 10.1002/cssc.202400636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/05/2024]
Abstract
The stability of high-energy-density lithium metal batteries (LMBs) heavily relies on the composition of the solid electrolyte interphase (SEI) formed on lithium metal anodes. In this study, the inorganic-rich SEI layer was achieved by incorporating bisalts additives into carbonate-based electrolytes. Within this SEI layer, the presence of LiF, polythionate, and Li3N was observed, generated by combining 1.0 м lithium bis(trifluoromethanesulfonyl)imide in ethylene carbonate: ethyl methyl carbonate:dimethyl carbonate in a 1 : 1 : 1 volume ratio, with the addition of 2 wt% lithium difluorophosphate and 2 wt% lithium difluoro(oxalato)borate additives (EL-DO). Furthermore, this formulation effectively mitigated corrosion of aluminum current collectors. EL-DO exhibited outstanding performance, including an average coulombic efficiency of 98.2 % in Li||Cu cells and a stable discharge capacity of approximately 162 mAh g-1 after 200 cycles in a Li||LiNi0.8Co0.1Mn0.1O2 (NCM811) configuration. Moreover, EL-DO displayed the potential to enhance the performance not only of LMBs but also of lithium-ion batteries. In the case of Gr||NCM811 cell using EL-DO, it consistently maintained high discharge capacities, even achieving around 135 mAh g-1 after the 100th cycle, surpassing the performance of other electrolytes. This study underscores the synergistic impact of bisalts additives in elevating the performance of lithium batteries.
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Affiliation(s)
- Thuy Duong Pham
- Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi, 10000, Vietnam
| | - Junam Kim
- Department of Chemistry, Kunsan National University, Gunsan, Jeonbuk, 54150, Republic of Korea
| | - Hye Min Oh
- Department of Physics, Kunsan National University, Gunsan, Jeonbuk, 54150, Republic of Korea
| | - Kyungwon Kwak
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Kyung-Koo Lee
- Department of Chemistry, Kunsan National University, Gunsan, Jeonbuk, 54150, Republic of Korea
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5
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Feng YH, Liu M, Wu J, Yang C, Liu Q, Tang Y, Zhu X, Wei GX, Dong H, Fan XY, Chen SF, Hao W, Yu L, Ji X, You Y, Wang PF, Lu J. Monolithic Interphase Enables Fast Kinetics for High-Performance Sodium-Ion Batteries at Subzero Temperature. Angew Chem Int Ed Engl 2024; 63:e202403585. [PMID: 38565432 DOI: 10.1002/anie.202403585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/30/2024] [Accepted: 04/02/2024] [Indexed: 04/04/2024]
Abstract
In spite of the competitive performance at room temperature, the development of sodium-ion batteries (SIBs) is still hindered by sluggish electrochemical reaction kinetics and unstable electrode/electrolyte interphase under subzero environments. Herein, a low-concentration electrolyte, consisting of 0.5M NaPF6 dissolving in diethylene glycol dimethyl ether solvent, is proposed for SIBs working at low temperature. Such an electrolyte generates a thin, amorphous, and homogeneous cathode/electrolyte interphase at low temperature. The interphase is monolithic and rich in organic components, reducing the limitation of Na+ migration through inorganic crystals, thereby facilitating the interfacial Na+ dynamics at low temperature. Furthermore, it effectively blocks the unfavorable side reactions between active materials and electrolytes, improving the structural stability. Consequently, Na0.7Li0.03Mg0.03Ni0.27Mn0.6Ti0.07O2//Na and hard carbon//Na cells deliver a high capacity retention of 90.8 % after 900 cycles at 1C, a capacity over 310 mAh g-1 under -30 °C, respectively, showing long-term cycling stability and great rate capability at low temperature.
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Affiliation(s)
- Yi-Hu Feng
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Mengting Liu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Junxiu Wu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
| | - Chao Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070, P. R. China
| | - Qiang Liu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Yongwei Tang
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Xu Zhu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Guang-Xu Wei
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Haojie Dong
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Xin-Yu Fan
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Si-Fan Chen
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Wenyu Hao
- School of Optical and Electronic Information-Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Lianzheng Yu
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
- Jiangsu Jufeng New Energy Technology Co. Ltd., Changzhou, Jiangsu, 213166, P. R. China
| | - Xiao Ji
- School of Optical and Electronic Information-Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Ya You
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, 430070, P. R. China
| | - Peng-Fei Wang
- Center of Nanomaterials for Renewable Energy, State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
- Jiangsu Jufeng New Energy Technology Co. Ltd., Changzhou, Jiangsu, 213166, P. R. China
| | - Jun Lu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, P. R. China
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6
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Ren Z, Li S, Liu H, Wang H, Niu X, Yang Q, Wang L. Dual-salt strategy tuning the solvation structure to achieve high cycling stability for FeS 2 cathodes. J Colloid Interface Sci 2024; 663:203-211. [PMID: 38401441 DOI: 10.1016/j.jcis.2024.02.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/17/2024] [Accepted: 02/20/2024] [Indexed: 02/26/2024]
Abstract
Pyrite FeS2, as a promising conversion-type cathode material, faces rapid capacity degradation due to challenges such as polysulfide shuttle and massive volume changes. Herein, a localized high-concentration electrolyte (LHCE) based on dual-salt lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) is designed to address the challenges. By the dual-salt strategy, we tailor a more desirable solvation structure than that in the single-salt system. Specifically, the solvation structure involving FSI- and TFSI- enables milder electrolyte decomposition, which reduces initial capacity loss. Meanwhile, it facilitates the formation of a stable and flexible cathode/electrolyte interphase (CEI), effectively mitigating side effects and accommodating volume changes. Consequently, the micro-sized FeS2 realizes a capacity of 641 mAh g-1 after 600 cycles with a retention rate of 90%, significantly improving the cycling stability of the FeS2 cathode. This work underscores the pivotal role of solvation structure in modulating electrochemical performances and provides a simple and effective electrolyte design concept for conversion-type cathodes.
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Affiliation(s)
- Zhenzhen Ren
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shuai Li
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Hongyu Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Hao Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xiaobin Niu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Qi Yang
- Beijing WeLion New Energy Technology Co., Ltd., Beijing 102400, China.
| | - Liping Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.
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7
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Li Z, Chen X, Li W, Li J, Zhang Y, Lu L, Zhan C, Qiu X. Tuning the End Alkyl Chain of the Ether Solvent to Stabilize the Electrode/Electrolyte Interfaces in the NCM-Li Battery. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27429-27438. [PMID: 38747425 DOI: 10.1021/acsami.4c04178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Lithium metal batteries (LMBs) combined with a high-voltage nickel-rich cathode show great potential in meeting the growing need for high energy density. The lack of advanced electrolytes has been a major obstacle in the commercialization of high-voltage lithium metal batteries (LMBs), as these electrolytes need to effectively support both a stable lithium metal anode (LMA) and a high-voltage cathode (>4 V vs Li+/Li). In this work, by extending the two terminal methyl groups in DIGDME and TEGDME to n-butyl groups, we design a new weakly solvating electrolyte (2 M LIFSI+TEGDBE) that enables the stable cycling of NMC83 (LiNi0.83Co0.12Mn0.05O2) cathodes. The NMC83 cell exhibits a high and stable Coulombic efficiency (CE) of over 99%, as well as capacity retention of approximately 99.8% after 100 cycles at 0.3 C. X-ray photoelectron spectroscopy analysis (XPS) and high-resolution transmission electron microscope (HRTEM) images revealed that the anion species decomposed first, resulting in the formation of a cathode-electrolyte interface (CEI) film predominantly consisting of decomposition products from the anions on the positive electrode surface. This work links the functional group of solvents with the solvation structure and electrochemical performance of ether-based electrolytes, providing a distinctive sight to design advanced electrolytes for high-energy-density LMBs.
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Affiliation(s)
- Zelin Li
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinping Chen
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wenting Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
- Institute of Tsinghua University Hebei, Beijing 100084, P.R. China
| | - Jie Li
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yujuan Zhang
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Lisi Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chun Zhan
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Xinping Qiu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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8
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Wu X, Piao Z, Zhang M, Lu G, Li C, Jia K, Zhuang Z, Gao R, Zhou G. In Situ Construction of a Multifunctional Interphase Enabling Continuous Capture of Unstable Lattice Oxygen Under Ultrahigh Voltages. J Am Chem Soc 2024; 146:14036-14047. [PMID: 38725301 DOI: 10.1021/jacs.4c02345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
The use of nickel-rich layered materials as cathodes can boost the energy density of lithium batteries. However, developing a safe and long-term stable nickel-rich layered cathode is challenging primarily due to the release of lattice oxygen from the cathode during cycling, especially at high voltages, which will cause a series of adverse effects, leading to battery failure and thermal runaway. Surface coating is often considered effective in capturing active oxygen species; however, its process is rather complicated, and it is difficult to maintain intact on the cathode with large volume changes during cycling. Here, we propose an in situ construction of a multifunctional cathode/electrolyte interphase (CEI), which is easy to prepare, repairable, and, most importantly, capable of continuously capturing active oxygen species during the entire life span. This unique protective mechanism notably improves the cycling stability of Li||LiNi0.8Co0.1Mn0.1O2 (NCM811) cells at rigorous working conditions, including ultrahigh voltage (4.8 V), high temperature (60 °C), and fast charging (10 C). An industrial 1 A h graphite||NCM811 pouch cell achieved stable operation of 600 cycles with a capacity retention of 79.6% at 4.4 V, exhibiting great potential for practical use. This work provides insightful guidance for constructing a multifunctional CEI to bypass limitations associated with high-voltage operations of nickel-rich layered cathodes.
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Affiliation(s)
- Xinru Wu
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Zhihong Piao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Mengtian Zhang
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Gongxun Lu
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Chuang Li
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Kai Jia
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Zhaofeng Zhuang
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Runhua Gao
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
| | - Guangmin Zhou
- Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, P. R. China
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9
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Yu Y, Lai C, Lei M, Chen K, Li C. Dual strategies of mild C-F scissoring fluorination and local high-concentration electrolyte to enable reversible Li-Fe-F conversion batteries. MATERIALS HORIZONS 2024; 11:2169-2179. [PMID: 38384254 DOI: 10.1039/d3mh01908j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Batteries taking conversion-type iron fluorides as energy-dense cathodes provide the possibility for the power electrification of the transportation and aviation industries. However, a safe and low-toxicity synthesis method for fluorides and the design of a compatible electrolyte formula are still challenging. Here, we propose a dual strategy of mild C-F scissoring fluorination and a local high-concentration electrolyte (LHCE) to enable highly reversible Li-Fe-F conversion batteries. A facile and safe scissoring strategy at a low temperature (95 °C) enables the preparation of a carbon-iron fluoride composite with a porous cubic cage-like structure. CFx plays a double role as a solid fluorination agent and an in situ conductive network after defluorination. The as-prepared fluoride cathode delivers a reversible capacity as high as 300 mA h g-1 over 100 cycles. The further LHCE strategy not only enhances the oxidation stable voltage of the electrolyte (>5 V) and the transference number of Li+ (0.74), but also realizes dual protection of the fluoride cathode and Li metal anode by facilitating the construction of robust cathode- and anode-electrolyte interfaces, respectively. The LHCE-assisted fluoride battery releases a higher reversible capacity of 335 mA h g-1 after 130 cycles. This work provides a solution to high-performance carbon-fluoride conversion cathodes by a synergetic effect of tailored synthesis, electroactive particle texture and electrolyte formula.
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Affiliation(s)
- Yifan Yu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai 201899, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Chuanzhong Lai
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai 201899, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Meng Lei
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai 201899, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Keyi Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai 201899, China.
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
| | - Chilin Li
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 585 He Shuo Road, Shanghai 201899, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
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10
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Yue L, Yu M, Li X, Shen Y, Wu Y, Fa C, Li N, Xu J. Wide Temperature Electrolytes for Lithium Batteries: Solvation Chemistry and Interfacial Reactions. SMALL METHODS 2024:e2400183. [PMID: 38647122 DOI: 10.1002/smtd.202400183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/02/2024] [Indexed: 04/25/2024]
Abstract
Improving the wide-temperature operation of rechargeable batteries is crucial for boosting the adoption of electric vehicles and further advancing their application scope in harsh environments like deep ocean and space probes. Herein, recent advances in electrolyte solvation chemistry are critically summarized, aiming to address the long-standing challenge of notable energy diminution at sub-zero temperatures and rapid capacity degradation at elevated temperatures (>45°C). This review provides an in-depth analysis of the fundamental mechanisms governing the Li-ion transport process, illustrating how these insights have been effectively harnessed to synergize with high-capacity, high-rate electrodes. Another critical part highlights the interplay between solvation chemistry and interfacial reactions, as well as the stability of the resultant interphases, particularly in batteries employing ultrahigh-nickel layered oxides as cathodes and high-capacity Li/Si materials as anodes. The detailed examination reveals how these factors are pivotal in mitigating the rapid capacity fade, thereby ensuring a long cycle life, superior rate capability, and consistent high-/low-temperature performance. In the latter part, a comprehensive summary of in situ/operational analysis is presented. This holistic approach, encompassing innovative electrolyte design, interphase regulation, and advanced characterization, offers a comprehensive roadmap for advancing battery technology in extreme environmental conditions.
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Affiliation(s)
- Liguo Yue
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Manqing Yu
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Xiangrong Li
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Yinlin Shen
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Yingru Wu
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Chang Fa
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
| | - Nan Li
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, 999077, China
| | - Jijian Xu
- Department of Chemistry, City University of Hong Kong, Hong Kong, 999077, China
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11
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Wu LQ, Li Z, Fan ZY, Li K, Li J, Huang D, Li A, Yang Y, Xie W, Zhao Q. Unveiling the Role of Fluorination in Hexacyclic Coordinated Ether Electrolytes for High-Voltage Lithium Metal Batteries. J Am Chem Soc 2024; 146:5964-5976. [PMID: 38381843 DOI: 10.1021/jacs.3c11798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Fluorinated ethers have become promising electrolyte solvent candidates for lithium metal batteries (LMBs) because they are endowed with high oxidative stability and high Coulombic efficiencies of lithium metal stripping/plating. Up to now, most reported fluorinated ether electrolytes are -CF3-based, and the influence of ion solvation in modifying degree of fluorination has not been well-elucidated. In this work, we synthesize a hexacyclic coordinated ether (1-methoxy-3-ethoxypropane, EMP) and its fluorinated ether counterparts with -CH2F (F1EMP), -CHF2 (F2EMP), or -CF3 (F3EMP) as terminal group. With lithium bis(fluorosulfonyl)imide as single salt, the solvation structure, Li-ion transport behavior, lithium deposition kinetics, and high-voltage stability of the electrolytes were systematically studied. Theoretical calculations and spectra reveal the gradually reduced solvating power from nonfluorinated EMP to fully fluorinated F3EMP, which leads to decreased ionic conductivity. In contrast, the weakly solvating fluorinated ethers possess higher Li+ transference number and exchange current density. Overall, partially fluorinated -CHF2 is demonstrated as the desired group. Further full cell testing using high-voltage (4.4 V) and high-loading (3.885 mAh cm-2) LiNi0.8Co0.1Mn0.1O2 cathode demonstrates that F2EMP electrolyte enables 80% capacity retention after 168 cycles under limited Li (50 μm) and lean electrolyte (5 mL Ah-1) conditions and 129 cycles under extremely lean electrolyte (1.8 mL Ah-1) and the anode-free conditions. This work deepens the fundamental understanding on the ion transport and interphase dynamics under various degrees of fluorination and provides a feasible approach toward the design of fluorinated ether electrolytes for practical high-voltage LMBs.
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Affiliation(s)
- Lan-Qing Wu
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhe Li
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhen-Yu Fan
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Kun Li
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jia Li
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Dubin Huang
- Beijing Golden Feather New Energy Technology Co., Ltd, Beijing 100080, China
| | - Aijun Li
- Beijing Golden Feather New Energy Technology Co., Ltd, Beijing 100080, China
| | - Yang Yang
- Beijing Golden Feather New Energy Technology Co., Ltd, Beijing 100080, China
| | - Weiwei Xie
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qing Zhao
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, China
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12
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Zhou J, Ding Y, Wang Y, Li H, Shang J, Cao Y, Wang H. Bulk bismuth anodes for wide-temperature sodium-ion batteries enabled by electrolyte chemistry modulation. J Colloid Interface Sci 2024; 657:502-510. [PMID: 38070336 DOI: 10.1016/j.jcis.2023.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/15/2023] [Accepted: 12/02/2023] [Indexed: 01/02/2024]
Abstract
Sodium ion batteries (SIBs) are considered reliable supplies for next-generation energy devices. However, there is a limited understanding of strategies to prevent the performance deterioration of SIBs under extreme temperature conditions. This study aimed to address this challenge by developing modified electrolyte chemistry to achieve stable wide-temperature SIBs. Weakly Na+-solvating solvent 2-methyltetrahydrofuran (MeTHF) was used to promote the kinetics of Na+ de-solvation. Moreover, 1,2-dimethoxyethane (DME) was introduced as a co-solvent because of the high solubility for Na salts and the coupling reaction mechanism with the Bi electrode. The formulated electrolyte not only endows an anion-dominated NaF-rich solid electrolyte interface (SEI) layer, but also reduces the energy required for the Na+ across the SEI layer (from 291.2 to 89.6 meV). Consequently, Na||Bi half batteries achieve stable cycles at 400 mA g-1 at -20, 20 and 60 °C, respectively. Meanwhile, the extreme operating temperature of the batteries can be extended to -40 and 80 °C, which exceeds those of most current lithium/sodium-based batteries. Furthermore, full batteries employing Na3V2(PO4)3 as the cathode material exhibit stable operation over a wide temperature range of -20 to 60 °C. This electrolyte design strategy presented in this study shows significant promise for enabling wide-temperature SIBs with improved performance.
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Affiliation(s)
- Jing Zhou
- School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
| | - Yang Ding
- School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
| | - Yingyu Wang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China
| | - Haoyu Li
- School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
| | - Jiayi Shang
- School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China
| | - Yu Cao
- School of Chemistry Engineering, School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China.
| | - Hua Wang
- School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100191, China.
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13
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Cao X, Xu W, Zheng D, Wang F, Wang Y, Shi X, Lu X. Weak Solvation Effect Induced Optimal Interfacial Chemistry Enables Highly Durable Zn Anodes for Aqueous Zn-Ion Batteries. Angew Chem Int Ed Engl 2024; 63:e202317302. [PMID: 38116830 DOI: 10.1002/anie.202317302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Aqueous zinc-ion batteries (AZIBs) are emerging as one of the most reliable energy storage technologies for scale-up applications, but still suffer from the instability of Zn anode, which is mainly caused by the undesirable dendrite growth and side reactions. To tackle these issues, we formulate a new aqueous electrolyte with weak solvation effect by introducing low-dielectric-constant acetone to achieve H2 O-poor solvation structure of Zn2+ . Experimental and theoretical calculation studies concurrently reveal that such solvation structure can: i) relieve the solvated H2 O related side reactions, ii) suppress the dendrite growth by boosting the desolvation kinetics of Zn2+ and iii) in situ form solid electrolyte interface (SEI) to synergistically inhibit the side reaction and dendrite growth. The synergy of these three factors prolongs the cycling life of Cu/Zn asymmetric cell from 30 h to more than 800 h at 1 mA cm-2 /1 mAh cm-2 , and can work at more harsh condition of 5 mA cm-2 /5 mAh cm-2 . More encouragingly, Zn/V2 O5 ⋅ nH2 O full cell also shows enhanced cycling stability of 95.9 % capacity retention after 1000 cycles, much better than that with baseline electrolyte (failing at ≈700th cycle).
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Affiliation(s)
- Xianshuo Cao
- College of Chemistry and Material Engineering, Guiyang University, 550005, Guiyang, P. R. China
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
| | - Wei Xu
- School of Applied Physics and Materials, Wuyi University, 529020, Jiangmen, P. R. China
| | - Dezhou Zheng
- School of Applied Physics and Materials, Wuyi University, 529020, Jiangmen, P. R. China
| | - Fuxin Wang
- School of Applied Physics and Materials, Wuyi University, 529020, Jiangmen, P. R. China
| | - Yi Wang
- College of Chemistry and Material Engineering, Guiyang University, 550005, Guiyang, P. R. China
| | - Xin Shi
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
| | - Xihong Lu
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem & Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
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14
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Hu H, Li J, Ji X. Confining Ionic Liquids in Developing Quasi-Solid-State Electrolytes for Lithium Metal Batteries. Chemistry 2024; 30:e202302826. [PMID: 37857581 DOI: 10.1002/chem.202302826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/21/2023]
Abstract
The concept of confining ionic liquids (ILs) in developing quasi-solid-state electrolytes (QSSEs) has been proposed, where ILs are dispersed in polymer networks/backbones and/or filler/host pores, forming the so-called confinement, and great research progress and promising research results have been achieved. In this review, the progress and achievement in developing QSSEs using IL-confinement for lithium metal batteries (LMBs), together with advanced characterizations and simulations, were surveyed, summarized, and analyzed, where the influence of specific parameters, such as IL (type, content, etc.), substrate (type, structure, surface properties, etc.), confinement methods, and so on, was discussed. The confinement concept was further compared with the conventional one in other research areas. It indicates that the IL-confinement in QSSEs improves the performance of electrolytes, for example, increasing the ionic conductivity, widening the electrochemical window, and enhancing the cycle performance of the assembled cells, and being different from those in other areas, that is, the IL-confinement concept in the battery area is in a broad extent. Finally, insights into developing QSSEs in LMBs with the confinement strategy were provided to promote the development and application of QSSE LMBs.
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Affiliation(s)
- Haiman Hu
- Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, 97187, Sweden
| | - Jiajia Li
- Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, 97187, Sweden
| | - Xiaoyan Ji
- Energy Engineering, Division of Energy Science, Luleå University of Technology, Luleå, 97187, Sweden
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15
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Li Y, Wang Z, Ji H, Wang M, Qian T, Yan C, Lu J. Extending Ring-Chain Coupling Empirical Law to Lithium-Mediated Electrochemical Ammonia Synthesis. Angew Chem Int Ed Engl 2024; 63:e202311413. [PMID: 38009687 DOI: 10.1002/anie.202311413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023]
Abstract
With its efficient nitrogen fixation kinetics, electrochemical lithium-mediated nitrogen reduction reaction (LMNRR) holds promise for replacing Haber-Bosch process and realizing sustainable and green ammonia production. However, the general interface problem in lithium electrochemistry seriously impedes the further enhancement of LMNRR performance. Inspired by the development history of lithium battery electrolytes, here, we extend the ring-chain solvents coupling law to LMNRR system to rationally optimize the interface during the reaction process, achieving nearly a two-fold Faradaic efficiency up to 54.78±1.60 %. Systematic theoretical simulations and experimental analysis jointly decipher that the anion-rich Li+ solvation structure derived from ring tetrahydrofuran coupling with chain ether successfully suppresses the excessive passivation of electrolyte decomposition at the reaction interface, thus promoting the mass transfer of active species and enhancing the nitrogen fixation kinetics. This work offers a progressive insight into the electrolyte design of LMNRR system.
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Affiliation(s)
- Ya Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Zhenkang Wang
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, Jiangsu, 215006, P. R. China
| | - Haoqing Ji
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, Jiangsu, 215006, P. R. China
| | - Mengfan Wang
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, Jiangsu, 215006, P. R. China
| | - Tao Qian
- College of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu, 226019, P. R. China
| | - Chenglin Yan
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P. R. China
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, Jiangsu, 215006, P. R. China
| | - Jianmei Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
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16
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Wu LQ, Li Z, Lu Y, Hou JZ, Han HQ, Zhao Q, Chen J. Hexacyclic Chelated Lithium Stable Solvates for Highly Reversible Cycling of High-Voltage Lithium Metal Battery. CHEMSUSCHEM 2023; 16:e202300590. [PMID: 37302979 DOI: 10.1002/cssc.202300590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/02/2023] [Accepted: 06/07/2023] [Indexed: 06/13/2023]
Abstract
Ether-based electrolytes that are endowed with decent compatibility towards lithium anode have been regarded as promising candidates for constructing energy-dense lithium metal batteries (LMBs), but their applications are hindered by low oxidation stability in conventional salt concentration. Here, we reported that regulating the chelating power and coordination structure can remarkably increase the high-voltage stability of ether-based electrolytes and lifespan of LMBs. Two ether molecules of 1,3-dimethoxypropane (DMP) and 1,3-diethoxypropane (DEP) are designed and synthesized as solvents of electrolytes to replace the traditional ether solvent (1,2-dimethoxyethane, DME). Both computational and spectra reveal that the transition from five- to six-membered chelate solvation structure by adding one methylene on DME results in the formation of weak Li solvates, which increase the reversibility and high-voltage stability in LMBs. Even under lean electrolyte (5 mL Ah-1 ) and low anode to cathode ratio (2.6), the fabricated high-voltage Li||LiNi0.8 Co0.1 Mn0.1 O2 LMBs using electrolyte of 2.30 M Lithiumbisfluorosulfonimide (LiFSI)/DMP still show capacity retention over 90 % after 184 cycles. This work highlights the importance of designing the coordination structures in non-fluorine ether electrolytes for rechargeable batteries.
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Affiliation(s)
- Lan-Qing Wu
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Zhe Li
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yong Lu
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Jin-Ze Hou
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Hao-Qin Han
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Qing Zhao
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, P.R. China
| | - Jun Chen
- Frontiers Science Center for New Organic Matter, Renewable Energy Conversion and Storage Center (RECAST), Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, P.R. China
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17
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Liu H, Hwang J, Matsumoto K, Hagiwara R. Systematic Study of Aluminum Corrosion in Ionic Liquid Electrolytes for Sodium-Ion Batteries: Impact of Temperature and Concentration. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37440356 DOI: 10.1021/acsami.3c06812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
The development of sodium-ion batteries utilizing sulfonylamide-based electrolytes is significantly encumbered by the corrosion of the Al current collector, resulting in capacity loss and poor cycling stability. While ionic liquid electrolytes have been reported to suppress Al corrosion, a recent study found that pitting corrosion occurs even when ionic liquids are employed. This study investigates the effects of temperature and Na salt concentration on the Al corrosion behavior in different sulfonylamide-based ionic liquid electrolytes for sodium-ion batteries. In the present work, cyclic voltammetry measurements and scanning electron microscopy showed that severe Al corrosion occurred in ionic liquids at high temperatures and low salt concentrations. X-ray photoelectron spectroscopy was employed to identify the different elemental components and verify the thickness of the passivation layer formed under varied salt concentrations and temperatures. The differences in the corrosion behaviors observed under the various conditions are ascribed to the ratio of free [FSA]- to Na+-coordinating [FSA]- in the electrolyte and the stability of the newly formed passivation layer. This work aims at augmenting the understanding of Al corrosion behavior in ionic liquid electrolytes to develop advanced batteries.
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Affiliation(s)
- Huazhen Liu
- Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Jinkwang Hwang
- Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kazuhiko Matsumoto
- Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Rika Hagiwara
- Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan
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18
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Guo JX, Tang WB, Xiong X, Liu H, Wang T, Wu Y, Cheng XB. Localized high-concentration electrolytes for lithium metal batteries: progress and prospect. Front Chem Sci Eng 2023. [DOI: 10.1007/s11705-022-2286-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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19
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Ruan D, Tan L, Chen S, Fan J, Nian Q, Chen L, Wang Z, Ren X. Solvent versus Anion Chemistry: Unveiling the Structure-Dependent Reactivity in Tailoring Electrochemical Interphases for Lithium-Metal Batteries. JACS AU 2023; 3:953-963. [PMID: 37006759 PMCID: PMC10052229 DOI: 10.1021/jacsau.3c00035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
Electrolytes are critical for the reversibility of various electrochemical energy storage systems. The recent development of electrolytes for high-voltage Li-metal batteries has been counting on the salt anion chemistry for building stable interphases. Herein, we investigate the effect of the solvent structure on the interfacial reactivity and discover profound solvent chemistry of designed monofluoro-ether in anion-enriched solvation structures, which enables enhanced stabilization of both high-voltage cathodes and Li-metal anodes. Systematic comparison of different molecular derivatives provides an atomic-scale understanding of the unique solvent structure-dependent reactivity. The interaction between Li+ and the monofluoro (-CH2F) group significantly influences the electrolyte solvation structure and promotes the monofluoro-ether-based interfacial reactions over the anion chemistry. With in-depth analyses of the compositions, charge transfer, and ion transport at interfaces, we demonstrated the essential role of the monofluoro-ether solvent chemistry in tailoring highly protective and conductive interphases (with enriched LiF at full depths) on both electrodes, as opposed to the anion-derived ones in typical concentrated electrolytes. As a result, the solvent-dominant electrolyte chemistry enables a high Li Coulombic efficiency (∼99.4%) and stable Li anode cycling at a high rate (10 mA cm-2), together with greatly improved cycling stability of 4.7 V-class nickel-rich cathodes. This work illustrates the underlying mechanism of the competitive solvent and anion interfacial reaction schemes in Li-metal batteries and offers fundamental insights into the rational design of electrolytes for future high-energy batteries.
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Affiliation(s)
- Digen Ruan
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Lijiang Tan
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Shunqiang Chen
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Jiajia Fan
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Qingshun Nian
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Li Chen
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
- Key
Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei 230601, China
| | - Zihong Wang
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
| | - Xiaodi Ren
- School
of Chemistry and Materials Science, University
of Science and Technology of China, Hefei 230026, China
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20
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Xin M, Liu Z, Shi Y, Li D, Li Y, Zhang X, Chen X, Chen S, Sun H, Xie H, Liu Y. Regulating the solvation chemistry of non-flammable high voltage electrolyte through salt-solvent ratio modulation. J Colloid Interface Sci 2023; 642:820-828. [PMID: 37060648 DOI: 10.1016/j.jcis.2023.03.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 04/17/2023]
Abstract
Boosting the energy density and safety issue of lithium-ion batteries has become ever more important to satisfy the diverse applications such as energy storage and mobile electronic devices. Herein, we present a new high voltage polyether-based electrolyte (HVPEE) by solvation structure design that can endure high-voltage operations and also possess non-flammable features. Especially, HVPEEs show better compatibility and stability with electrode than conventional electrolyte. We find that the solvent separated ion pair (SSIP) and contact ion pair (CIP) dominate the ion-solvent structure of HVPEEs, rather than the free solvent and ions. In this way, the oxidative decomposition of HVPEE on the cathode interface can be suppressed significantly due to the reduced highest occupied molecular orbital of SSIP complex structure than that of free TFSI-. As a result, the oxidation voltage can achieve as high as 5.35 V when the ether group/Li is optimized at 10/1 in the HVPEE, enabling the LiFePO4//Li full cells deliver a capacity of 165 mA h g-1 with a capacity retention of 98 % after 200 cycles. Moreover, when the cut-off voltage is 4.5 V, the discharge capacity of the LiNi0.6Mn0.2Co0.2O2//Li full cell can reach 170 mA h g-1.
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Affiliation(s)
- Mingyang Xin
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Zhenhua Liu
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yuting Shi
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Dan Li
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yanan Li
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xinming Zhang
- Department of Materials Science and Engineering, University of California, Davis 95616, CA, United States
| | - Xi Chen
- Department of Materials Science and Engineering, University of California, Davis 95616, CA, United States
| | - Silin Chen
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Hao Sun
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Haiming Xie
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
| | - Yulong Liu
- National & Local United Engineering Laboratory for Power Battery, Department of Chemistry, Northeast Normal University, Changchun 130024, China.
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21
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Zhang H, Zeng Z, Liu M, Ma F, Qin M, Wang X, Wu Y, Lei S, Cheng S, Xie J. A "tug-of-war" effect tunes Li-ion transport and enhances the rate capability of lithium metal batteries. Chem Sci 2023; 14:2745-2754. [PMID: 36908970 PMCID: PMC9993850 DOI: 10.1039/d2sc06620c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 01/02/2023] [Indexed: 02/10/2023] Open
Abstract
"Solvent-in-salt" electrolytes (high-concentration electrolytes (HCEs)) and diluted high-concentration electrolytes (DHCEs) show great promise for reviving secondary lithium metal batteries (LMBs). However, the inherently sluggish Li+ transport of such electrolytes limits the high-rate capability of LMBs for practical conditions. Here, we discovered a "tug-of-war" effect in a multilayer solvation sheath that promoted the rate capability of LMBs; the pulling force of solvent-nonsolvent interactions competed with the compressive force of Li+-nonsolvent interactions. By elaborately manipulating the pulling and compressive effects, the interaction between Li+ and the solvent was weakened, leading to a loosened solvation sheath. Thereby, the developed electrolytes enabled a high Li+ transference number (0.65) and a Li (50 μm)‖NCM712 (4 mA h cm-2) full cell exhibited long-term cycling stability (160 cycles; 80% capacity retention) at a high rate of 0.33C (1.32 mA cm-2). Notably, Li (50 μm)‖LiFePO4 (LFP; 17.4 mg cm-2) cells with a designed electrolyte reached a capacity retention of 80% after 1450 cycles at a rate of 0.66C. An 6 Ah Li‖LFP pouch cell (over 250 W h kg-1) showed excellent cycling stability (130 cycles, 96% capacity retention) under practical conditions. This design concept for an electrolyte provides a promising path to build high-energy-density and high-rate LMBs.
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Affiliation(s)
- Han Zhang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Ziqi Zeng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Mengchuang Liu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Fenfen Ma
- GuSu Laboratory of Materials Suzhou 215123 Jiangsu China
| | - Mingsheng Qin
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Xinlan Wang
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Yuanke Wu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Sheng Lei
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Shijie Cheng
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
| | - Jia Xie
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology Wuhan 430074 Hubei China
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22
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Wu M, Wang Z, Zhang W, Jayawardana C, Li Y, Chen F, Nan B, Lucht BL, Wang C. High-Performance Lithium Metal Batteries Enabled by a Fluorinated Cyclic Ether with a Low Reduction Potential. Angew Chem Int Ed Engl 2023; 62:e202216169. [PMID: 36592348 PMCID: PMC10107931 DOI: 10.1002/anie.202216169] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/25/2022] [Accepted: 01/02/2023] [Indexed: 01/03/2023]
Abstract
Electrolyte engineering is crucial for developing high-performance lithium metal batteries (LMB). Here, we synthesized two cosolvents methyl bis(fluorosulfonyl)imide (MFSI) and 3,3,4,4-tetrafluorotetrahydrofuran (TFF) with significantly different reduction potentials and add them into LiFSI-DME electrolytes. The LiFSI/TFF-DME electrolyte gave an average Li Coulombic efficiency (CE) of 99.41 % over 200 cycles, while the average Li CEs for MFSI-based electrolyte is only 98.62 %. Additionally, the TFF-based electrolytes exhibited a more reversible performance than the state-of-the-art fluorinated 1,4-dimethoxylbutane electrolyte in both Li||Cu half-cell and anode-free Cu||LiNi0.8 Mn0.1 Co0.1 O2 full cell. More importantly, the decomposition product from bis(fluorosulfonyl)imide anion could react with ether solvent, which destroyed the SEI, thus decreasing cell performance. These key discoveries provide new insights into the rational design of electrolyte solvents and cosolvents for LMB.
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Affiliation(s)
- Min Wu
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Zeyi Wang
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Weiran Zhang
- Department of Materials Science & Engineering, University of Maryland, College Park, MD 20742, USA
| | | | - Yue Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Fu Chen
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Bo Nan
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Brett L Lucht
- Department of Chemistry, University of Rhode Island, Kingston, RI 02881, USA
| | - Chunsheng Wang
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA.,Department of Materials Science & Engineering, University of Maryland, College Park, MD 20742, USA
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23
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Li J, Hu Y, Xie H, Peng J, Fan L, Zhou J, Lu B. Weak Cation-Solvent Interactions in Ether-Based Electrolytes Stabilizing Potassium-ion Batteries. Angew Chem Int Ed Engl 2022; 61:e202208291. [PMID: 35713155 DOI: 10.1002/anie.202208291] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Indexed: 11/10/2022]
Abstract
Conventional ether-based electrolytes exhibited a low polarization voltage in potassium-ion batteries, yet suffered from ion-solvent co-intercalation phenomena in a graphite anode, inferior potassium-metal performance, and limited oxidation stability. Here, we reveal that weakening the cation-solvent interactions could suppress the co-intercalation behaviour, enhance the potassium-metal performance, and improve the oxidation stability. Consequently, the graphite anode exhibits K+ intercalation behaviour (K||graphite cell operates 200 cycles with 86.6 % capacity retention), the potassium metal shows highly stable plating/stripping (K||Cu cell delivers 550 cycles with average Coulombic efficiency of 98.9 %) and dendrite-free (symmetric K||K cell operates over 1400 hours) properties, and the electrolyte exhibits high oxidation stability up to 4.4 V. The ion-solvent interaction tuning strategy provides a promising method to develop high-performance electrolytes and beyond.
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Affiliation(s)
- Jinfan Li
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
| | - Yanyao Hu
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
| | - Huabin Xie
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
| | - Jun Peng
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
| | - Ling Fan
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
| | - Jiang Zhou
- School of Materials Science and Engineering, Central South University, Changsha, P. R. China
| | - Bingan Lu
- School of Physics and Electronics, Hunan University, Changsha, P. R. China
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24
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Tan L, Chen S, Chen Y, Fan J, Ruan D, Nian Q, Chen L, Jiao S, Ren X. Intrinsic Nonflammable Ether Electrolytes for Ultrahigh-Voltage Lithium Metal Batteries Enabled by Chlorine Functionality. Angew Chem Int Ed Engl 2022; 61:e202203693. [PMID: 35388586 DOI: 10.1002/anie.202203693] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/09/2022]
Abstract
The issues of inherent low anodic stability and high flammability hinder the deployment of the ether-based electrolytes in practical high-voltage lithium metal batteries. Here, we report a rationally designed ether-based electrolyte with chlorine functionality on ether molecular structure to address these critical challenges. The chloroether-based electrolyte demonstrates a high Li Coulombic efficiency of 99.2 % and a high capacity retention >88 % over 200 cycles for Ni-rich cathodes at an ultrahigh cut-off voltage of 4.6 V (stable even up to 4.7 V). The chloroether-based electrolyte not only greatly improves electrochemical stabilities of Ni-rich cathodes under ultrahigh voltages with interphases riched in LiF and LiCl, but possesses the intrinsic nonflammable safety feature owing to the flame-retarding ability of chlorine functional groups. This study offers a new approach to enable ether-based electrolytes for high energy density, long-life and safe Li metal batteries.
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Affiliation(s)
- Lijiang Tan
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Shunqiang Chen
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Yawei Chen
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Jiajia Fan
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Digen Ruan
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Qingshun Nian
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Li Chen
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.,Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei, 230601, China
| | - Shuhong Jiao
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Xiaodi Ren
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
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25
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Li J, Hu Y, Xie H, Peng J, Fan L, Zhou J, Lu B. Weak Cation–solvent Interactions in Ether‐based Electrolytes Stabilizing Potassium‐ion Batteries. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jinfan Li
- Hunan University School of Physics and Electronics CHINA
| | - Yanyao Hu
- Hunan University School of Physics and Electronics CHINA
| | - Huabin Xie
- Hunan University School of Physics and Electronics CHINA
| | - Jun Peng
- Hunan University School of Physics and Electronics CHINA
| | - Ling Fan
- Hunan University School of Physics and Electronics Lushao Road 410083 Changsha CHINA
| | - Jiang Zhou
- Central South University School of Materials Science and Engineering CHINA
| | - Bingan Lu
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education and State Key Laboratory for Chemo/Biosensing and Chemometrics Physics and electonics South Lushan Road 410082 Changsha CHINA
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26
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Tan L, Chen S, Chen Y, Fan J, Ruan D, Nian Q, Chen L, Jiao S, Ren X. Intrinsic Nonflammable Ether Electrolytes for Ultrahigh‐Voltage Lithium Metal Batteries Enabled by Chlorine Functionality. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Lijiang Tan
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Shunqiang Chen
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Yawei Chen
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Jiajia Fan
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Digen Ruan
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Qingshun Nian
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Li Chen
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Shuhong Jiao
- University of Science and Technology of China Department of Materials Science and Engineering CHINA
| | - Xiaodi Ren
- University of Science and Technology of China Department of Materials Science and Engineering 96 Jinzhai Road 230026 Hefei CHINA
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