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Choi H, Cho S, Kim YS, Cho JS, Kim H, Lee H, Ko S, Kim K, Lee SM, Hong ST, Choi CH, Seo DH, Park S. An Effective Catholyte for Sulfide-Based All-Solid-State Batteries Utilizing Gas Absorbents. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403147. [PMID: 38989706 DOI: 10.1002/smll.202403147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/24/2024] [Indexed: 07/12/2024]
Abstract
All-solid-state batteries (ASSBs) possess the advantage of ensuring safety while simultaneously maximizing energy density, making them suitable for next-generation battery models. In particular, sulfide solid electrolytes (SSEs) are viewed as promising candidates for ASSB electrolytes due to their excellent ionic conductivity. However, a limitation exists in the form of interfacial side reactions occurring between the SSEs and cathode active materials (CAMs), as well as the generation of sulfide-based gases within the SSE. These issues lead to a reduction in the capacity of CAMs and an increase in internal resistance within the cell. To address these challenges, cathode composite materials incorporating zinc oxide (ZnO) are fabricated, effectively reducing various side reactions occurring in CAMs. Acting as a semiconductor, ZnO helps mitigate the rapid oxidation of the solid electrolyte facilitated by an electronic pathway, thereby minimizing side reactions, while maintaining electron pathways to the active material. Additionally, it absorbs sulfide-based gases, thus protecting the lithium ions within CAMs. In this study, the mass spectrometer is employed to observe gas generation phenomena within the ASSB cell. Furthermore, a clear elucidation of the side reactions occurring at the cathode and the causes of capacity reduction in ASSB are provided through density functional theory calculations.
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Affiliation(s)
- Hyunbeen Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Sungjin Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Yoon-Seong Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Jun Sic Cho
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Haesol Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Hyungjin Lee
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technolohy (DGIST), Daegu, 42988, Republic of Korea
| | - Sumin Ko
- Graduate Institute of Ferrous & Eco Materials Technology (GIFT), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Kyungjun Kim
- Graduate Institute of Ferrous & Eco Materials Technology (GIFT), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Sang-Min Lee
- Graduate Institute of Ferrous & Eco Materials Technology (GIFT), Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Seung-Tae Hong
- Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science and Technolohy (DGIST), Daegu, 42988, Republic of Korea
| | - Chang Hyuck Choi
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Dong-Hwa Seo
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Soojin Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
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Hao Y, Xia Y, Liu W, Sun G, Feng L, Zhou X, Iqbal S, Tian Z, Zhang Z, Li Y, Zhang X, Jiang Y. Tuning the Solvation Structure in Water-Based Solution Enables Surface Reconstruction of Layered Oxide Cathodes toward Long Lifespan Sodium-Ion Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401514. [PMID: 38696613 PMCID: PMC11234404 DOI: 10.1002/advs.202401514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/02/2024] [Indexed: 05/04/2024]
Abstract
Layered oxides of sodium-ion batteries suffer from severe side reactions on the electrode/electrolyte interface, leading to fast capacity degradation. Although surface reconstruction strategies are widely used to solve the above issues, the utilization of the low-cost wet chemical method is extremely challenging for moisture-sensitive Na-based oxide materials. Here, the solvation tuning strategy is proposed to overcome the deterioration of NaNi1/3Mn1/3Fe1/3O2 in water-based solution and conduct the surface reconstruction. When capturing the water molecules by the solvation structure of cations, here is Li+, the structural collapse and degradation of layered oxides in water-based solvents are greatly mitigated. Furthermore, Li(H2O)3EA+ promotes the profitable Li+/Na+ exchange to build a robust surface, which hampers the decomposition of electrolytes and the structural evolution upon cycling. Accordingly, the lifespan of Li-reinforced materials is prolonged to three times that of the pristine one. This work represents a step forward in understanding the surface reconstruction operated in a water-based solution for high-performance sodium layered oxide cathodes.
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Affiliation(s)
- Youchen Hao
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
| | - Yufan Xia
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Wen Liu
- Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China
| | - Guojie Sun
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
| | - Lihua Feng
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
| | - Xiaochong Zhou
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Sikandar Iqbal
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
| | - Ziqi Tian
- Huzhou Horizontal Na Energy Technology Co., Ltd.Huzhou313000China
| | - Zhongcai Zhang
- Huzhou Horizontal Na Energy Technology Co., Ltd.Huzhou313000China
| | - Yong Li
- School of Physics and Materials ScienceNanchang UniversityNanchangJiangxi330031China
| | - Xuan Zhang
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
| | - Yinzhu Jiang
- School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
- Future Science Research InstituteZJU‐Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou311215China
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3
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Cai C, Zhang D, Zhang Q, Chen K, Hua W, Peng C, Xue D. Origin of oxygen-redox and transition metals dissolution in Ni-rich Li xNi 0.8Co 0.1Mn 0.1O 2 cathode. J Chem Phys 2023; 158:114703. [PMID: 36948826 DOI: 10.1063/5.0139471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Recently, Ni-rich LiNixCoyMn1-x-yO2 (x ≥ 0.8) draw significant research attention as cathode materials in lithium-ion batteries due to their superiority in energy density. However, the oxygen release and the transition metals (TMs) dissolution during the (dis)charging process lead to serious safety issues and capacity loss, which highly prevent its application. In this work, we systematically explored the stability of lattice oxygen and TM sites in LiNi0.8Co0.1Mn0.1O2(NCM811) cathode via investigating various vacancy formations during lithiation/delithiation, and properties such as the number of unpaired spins (NUS), net charges, and d band center were comprehensively studied. In the process of delithiation (x = 1 → 0.75 → 0), the vacancy formation energy of lattice oxygen [Evac(O)] has been identified to follow the order of Evac(O-Mn) > Evac(O-Co) > Evac(O-Ni), and Evac(TMs) shows a consistent trend with the sequence of Evac(Mn) > Evac(Co) > Evac(Ni), demonstrating the importance of Mn to stabilize the structural skeleton. Furthermore, the |NUS| and net charge are proved to be good descriptors for measuring Evac(O/TMs), which show linear correlations with Evac(O) and Evac(TMs), respectively. Li vacancy plays a pivotal role on Evac(O/TMs). Evac(O/TMs) at x = 0.75 vary extremely between the NiCoMnO layer (NCM layer) and the NiO layer (Ni layer), which correlates well with |NUS| and net charge in the NCM layer but aggregates in a small region in the Ni layer due to the effect of Li vacancies. In general, this work provides an in-depth understanding of the instability of lattice oxygen and transition metal sites on the (104) surface of Ni-rich NCM811, which might give new insights into oxygen release and transition metal dissolution in this system.
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Affiliation(s)
- Chun Cai
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Dantong Zhang
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Qi Zhang
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Kunfeng Chen
- State Key Laboratory of Crystal Materials, Institute of Novel Semiconductors, Shandong University, Jinan 250100, China
| | - Wenchao Hua
- GEM Super Green Technology Research Institute, Taohuayuan Science and Technology Innovation Park, Shenzhen 518101, China
| | - Chao Peng
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Dongfeng Xue
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Han Y, Lei Y, Ni J, Zhang Y, Geng Z, Ming P, Zhang C, Tian X, Shi JL, Guo YG, Xiao Q. Single-Crystalline Cathodes for Advanced Li-Ion Batteries: Progress and Challenges. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107048. [PMID: 35229459 DOI: 10.1002/smll.202107048] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/29/2021] [Indexed: 06/14/2023]
Abstract
Single-crystalline cathodes are the most promising candidates for high-energy-density lithium-ion batteries (LIBs). Compared to their polycrystalline counterparts, single-crystalline cathodes have advantages over liquid-electrolyte-based LIBs in terms of cycle life, structural stability, thermal stability, safety, and storage but also have a potential application in solid-state LIBs. In this review, the development history and recent progress of single-crystalline cathodes are reviewed, focusing on properties, synthesis, challenges, solutions, and characterization. Synthesis of single-crystalline cathodes usually involves preparing precursors and subsequent calcination, which are summarized in the details. In the following sections, the development issues of single-crystalline cathodes, including kinetic limitations, interfacial side reactions, safety issues, reversible planar gliding and micro-cracking, and particle size distribution and agglomeration, are systematically analyzed, followed by current solutions and characterization techniques. Finally, this review is concluded with proposed research thrusts for the future development of single-crystalline cathodes.
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Affiliation(s)
- Yongkang Han
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Yike Lei
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Jie Ni
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Yingchuan Zhang
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Zhen Geng
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Pingwen Ming
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Cunman Zhang
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
| | - Xiaorui Tian
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Ji-Lei Shi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yu-Guo Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qiangfeng Xiao
- School of Automotive Studies & Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), 4800 Cao'an Road, Shanghai, 201804, P. R. China
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Lu Y, Zhu T, McShane E, McCloskey BD, Chen G. Single-Crystal LiNi x Mn y Co 1- x - y O 2 Cathodes for Extreme Fast Charging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105833. [PMID: 35060327 DOI: 10.1002/smll.202105833] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Ni-rich layered LiNix Mny Co1- x - y O2 (NMCs, x ≥ 0.8) are poised to be the dominating cathode materials for lithium-ion batteries for the foreseeable future. Conventional polycrystalline NMCs, however, suffer from severe cracking along the grain boundaries of primary particles and capacity loss under high charge and/or discharge rates, hindering their implementation in fast-charging electric vehicular (EV) batteries. Single-crystal (SC) NMCs are attractive alternatives as they eliminate intergranular cracking and allow for grain-level surface optimization for fast Li transport. In the present study, the authors report synthetic approaches to produce SC LiNi0.8 Co0.1 Mn0.1 O2 (NMC811) samples with different morphologies: Oct-SC811 with predominating (012)-family surface and Poly-SC811 with predominating (104)-family surface. Poly-SC811, representing the first experimentally synthesized NMC811 single crystals with (104) surface, delivers superior performance even at the ultra-high rate of 6 C. Through detailed X-ray analysis and electron microscopy characterization, it is shown that the enhanced performance originates from better chemical and structural stabilities, faster Li+ diffusion kinetics, suppressed side reactions with electrolyte, and excellent cracking resistance. These insights provide important design guidelines in the future development of fast-charging NMC-type cathode materials.
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Affiliation(s)
- Yanying Lu
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Tianyu Zhu
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Eric McShane
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - Bryan D McCloskey
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
| | - Guoying Chen
- Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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6
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Zhao S, Wang B, Zhang Z, Zhang X, He S, Yu H. First-principles computational insights into lithium battery cathode materials. ELECTROCHEM ENERGY R 2021. [DOI: 10.1007/s41918-021-00115-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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7
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Chen YH, Zhang J, Li Y, Zhang YF, Huang SP, Lin W, Chen WK. Effects of doping high-valence transition metal (V, Nb and Zr) ions on the structure and electrochemical performance of LIB cathode material LiNi 0.8Co 0.1Mn 0.1O 2. Phys Chem Chem Phys 2021; 23:11528-11537. [PMID: 33960343 DOI: 10.1039/d1cp00426c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ni-rich layered oxides, like LiNi0.8Co0.1Mn0.1O2 (NCM811), have been widely investigated as cathodes due to their high energy density. However, gradual structural transformation during cycling can lead to capacity degradation and potential decay of cathode materials. Herein, we doped high-valence transition metal (TM) ions (V5+, Nb5+, and Zr4+) at the Ni site of NCM811 by first principles simulations and explored the mechanism of doping TMs in NCMs for enhancing the electrochemical performance. Analysis of the calculations shows that doping V, Nb and Zr has an efficient influence on alleviating the Ni oxidation, reducing the loss of oxygen, and facilitating Li+ migration. Moreover, V doping can further suppress the lattice distortion due to the radius of V5+ being close to the radius of Mn4+. In particular, compared with the barrier of the pristine NCM in Li divacancy, the barrier of V-doped NCM reaches the lowest. In conclusion, V is the most favorable dopant for NCM811 to improve the electrochemical properties and achieve both high capacity and cycling stability.
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Affiliation(s)
- Yan-Hui Chen
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, P. R. China.
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8
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Bao W, Qian G, Zhao L, Yu Y, Su L, Cai X, Zhao H, Zuo Y, Zhang Y, Li H, Peng Z, Li L, Xie J. Simultaneous Enhancement of Interfacial Stability and Kinetics of Single-Crystal LiNi 0.6Mn 0.2Co 0.2O 2 through Optimized Surface Coating and Doping. NANO LETTERS 2020; 20:8832-8840. [PMID: 33237783 DOI: 10.1021/acs.nanolett.0c03778] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Balancing interfacial stability and Li+ transfer kinetics through surface engineering is a key challenge in developing high-performance battery materials. Although conformal coating enabled by atomic layer deposition (ALD) has shown great promise in controlling impedance increase upon cycling by minimizing side reactions at the electrode-electrolyte interface, the coating layer itself usually exhibits poor Li+ conductivity and impedes surface charge transfer. In this work, we have shown that by carefully controlling postannealing temperature of an ultrathin ZrO2 film prepared by ALD, Zr4+ surface doping could be achieved for Ni-rich layered oxides to accelerate the charge transfer yet provide sufficient protection. Using single-crystal LiNi0.6Mn0.2Co0.2O2 as a model material, we have shown that surface Zr4+ doping combined with ZrO2 coating can enhance both the cycle performance and rate capability during high-voltage operation. Surface doping via controllable postannealing of ALD surface coating layer reveals an attractive path toward developing stable and Li+-conductive interfaces for single-crystal battery materials.
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Affiliation(s)
- Wenda Bao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Guannan Qian
- Department of Chemical Engineering, Shanghai Electrochemical Energy Device Research Center (SEED), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lianqi Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yi Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Longxing Su
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xincan Cai
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haojie Zhao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yuqing Zuo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yue Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haoyuan Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zijian Peng
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Linsen Li
- Department of Chemical Engineering, Shanghai Electrochemical Energy Device Research Center (SEED), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jin Xie
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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9
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Wang T, Ren K, He M, Dong W, Xiao W, Pan H, Yang J, Yang Y, Liu P, Cao Z, Ma X, Wang H. Synthesis and Manipulation of Single-Crystalline Lithium Nickel Manganese Cobalt Oxide Cathodes: A Review of Growth Mechanism. Front Chem 2020; 8:747. [PMID: 33033714 PMCID: PMC7509038 DOI: 10.3389/fchem.2020.00747] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 07/20/2020] [Indexed: 11/16/2022] Open
Abstract
Lithium nickel manganese cobalt oxide (NMC) cathodes are of great importance for the development of lithium ion batteries with high energy density. Currently, most commercially available NMC products are polycrystalline secondary particles, which are aggregated by anisotropic primary particles. Although the polycrystalline NMC particles have demonstrated large gravimetric capacity and good rate capabilities, the volumetric energy density, cycling stability as well as production adaptability are not satisfactory. Well-dispersed single-crystalline NMC is therefore proposed to be an alternative solution for further development of high-energy-density batteries. Various techniques have been explored to synthesize the single-crystalline NMC product, but the fundamental mechanisms behind these techniques are still fragmented and incoherent. In this manuscript, we start a journey from the fundamental crystal growth theory, compare the crystal growth of NMC among different techniques, and disclose the key factors governing the growth of single-crystalline NMC. We expect that the more generalized growth mechanism drawn from invaluable previous works could enhance the rational design and the synthesis of cathode materials with superior energy density.
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Affiliation(s)
- Ting Wang
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China.,Ningxia Polytechnic, Yinchuan, China
| | - Keliang Ren
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Miao He
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Wenhao Dong
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Wei Xiao
- Hubei Key Laboratory of Electrochemical Power Sources, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Hongyu Pan
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Jia Yang
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Yang Yang
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Ping Liu
- Office of Frontier Technology, Ningxia Power and Energy Storage Lithium-Ion Battery Materials Engineering Technology Research Center, Zhongwei, China
| | - Zhijie Cao
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Xiaobo Ma
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China
| | - Hailong Wang
- Advanced Energy Storage Materials & Devices Lab, Ningxia University, Yinchuan, China.,Office of Frontier Technology, Ningxia Power and Energy Storage Lithium-Ion Battery Materials Engineering Technology Research Center, Zhongwei, China
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10
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Sun YY, Hou PY, Zhang LC. Mitigating the Microcracks of High-Ni Oxides by In Situ Formation of Binder between Anisotropic Grains for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2020; 12:13923-13930. [PMID: 32150372 DOI: 10.1021/acsami.9b23470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Increasing attention has been paid to layered high-Ni oxides with high capacity as a promising cathode for high-energy lithium-ion batteries. However, the undesirable microcracks in secondary particles usually occur due to the volume changes of anisotropic primary grains during cycles, which lead to the decay of electrochemical performance. Here, for the first time, a functional electrolyte with di-sec-butoxyaluminoxytriethoxysilane additive integrating the functions of silane and aluminate is proposed to in situ form the binder-like filler between anisotropic primary grains for mitigating the microcracks of high-Ni oxides. It is demonstrated that Li-containing aluminosilicate as a glue layer between the gaps of grains and as a coating layer on the surface of the grains is generated, and these features further enhance the interfacial bonding and surface stability of anisotropic primary grains. Consequently, the microcracks along with side reactions and phase transitions of high-Ni oxides are mitigated. As anticipated, the electrochemical performance and thermal stability of high-Ni oxides are improved, and there is also a capacity retention of 75.4% even after 300 cycles and large reversible capacity of ∼160 mA h g-1 at 5 C. The functional electrolyte offers a simple, efficient, and scalable method to promote the electrochemical properties and applicability of high-Ni oxide cathodes in high-energy lithium-ion batteries.
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Affiliation(s)
- Yan-Yun Sun
- School of Automobile and Traffic Engineering, Jiangsu University of Technology, Jiangsu Province, 213001, China
| | - Pei-Yu Hou
- School of Physics and Technology, University of Jinan, Jinan, Shandong Province 250022, China
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
| | - Lan-Chun Zhang
- School of Automobile and Traffic Engineering, Jiangsu University of Technology, Jiangsu Province, 213001, China
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11
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Huang Q, He P, Xiao L, Feng Y, Liu J, Yang Y, Huang B, Cui X, Wang P, Wei W. Effect of Sodium Content on the Electrochemical Performance of Li-Substituted, Manganese-Based, Sodium-Ion Layered Oxide Cathodes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2191-2198. [PMID: 31846282 DOI: 10.1021/acsami.9b12984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Li-substituted, manganese-based, layered oxides NaxLi0.18Mn0.66Co0.17Ni0.17O2+δ (x = 0.54, 0.66, 0.78, and 0.90) have been investigated as one kind of high-performance cathode materials for sodium ion batteries (SIBs). Phase compositions and local structures of the cathode materials with varying sodium content were elucidated by powder X-ray diffraction (PXRD) and atomic-scale high angle annular dark field scanning transmission electron microscope (HAADF-STEM), which demonstrates that a Li-O'3 phase was aroused in P2-type sodium layered oxide matrix forming a Na-P2/Li-O'3 hybrid structure. More importantly, the effect of sodium content on the preferential exposure of (102) and (104) facets and surface morphology of the cathode particles has been comprehensively studied, as well as their relationship with electrochemical performance. It reveals that, in addition to the preferential growth of (102) and (104) facets that has been proved to enhance the capacity and rate performance of the layered oxides, the smooth surface finish of the particles also plays a vital role in deciding the electrochemical performance. The layered sodium cathode material with a sodium content of 0.66 possesses sufficient exposure of (102) and (104) facets and smooth side surface, resulting in the superior capacities under various C rates (187 mAh/g at 0.2 C and 114 mAh/g at 5 C) comparing to the cathode materials with all other sodium contents. The mechanism has also been proposed in this study. These findings presented herein open up new strategies to design high performance sodium layered oxide cathode.
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Affiliation(s)
- Qun Huang
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Pingge He
- Institute for Advanced Materials and Technology , University of Science & Technology Beijing , Beijing 100091 , P.R. China
| | - Lei Xiao
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Yiming Feng
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Jiatu Liu
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative, Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , P. R. China
| | - Ying Yang
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Boyun Huang
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
| | - Xinwei Cui
- College of Materials Science and Engineering , Zhengzhou University , Zhengzhou 450001 , P. R. China
| | - Peng Wang
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative, Innovation Center of Advanced Microstructures , Nanjing University , Nanjing 210093 , P. R. China
| | - Weifeng Wei
- State Key Laboratory of Powder Metallurgy , Central South University , Changsha , Hunan 410083 , P. R. China
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Xu C, Xiang W, Wu Z, Xu Y, Li Y, Wang Y, Xiao Y, Guo X, Zhong B. Highly Stabilized Ni-Rich Cathode Material with Mo Induced Epitaxially Grown Nanostructured Hybrid Surface for High-Performance Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16629-16638. [PMID: 31002220 DOI: 10.1021/acsami.9b03403] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Capacity fading induced by unstable surface chemical properties and intrinsic structural degradation is a critical challenge for the commercial utilization of Ni-rich cathodes. Here, a highly stabilized Ni-rich cathode with enhanced rate capability and cycling life is constructed by coating the molybdenum compound on the surface of LiNi0.815Co0.15Al0.035O2 secondary particles. The infused Mo ions in the boundaries not only induce the Li2MoO4 layer in the outermost but also form an epitaxially grown outer surface region with a NiO-like phase and an enriched content of Mo6+ on the bulk phase. The Li2MoO4 layer is expected to reduce residential lithium species and promote the Li+ transfer kinetics. The transition NiO-like phase, as a pillaring layer, could maintain the integrity of the crystal structure. With the suppressed electrolyte-cathode interfacial side reactions, structure degradation, and intergranular cracking, the modified cathode with 1% Mo exhibits a superior discharge capacity of 140 mAh g-1 at 10 C, a superior cycling performance with a capacity retention of 95.7% at 5 C after 250 cycles, and a high thermal stability.
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Affiliation(s)
- Chunliu Xu
- College of Materials and Chemistry & Chemical Engineering , Chengdu University of Technology , Chengdu 610059 , P. R. China
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Wei Xiang
- College of Materials and Chemistry & Chemical Engineering , Chengdu University of Technology , Chengdu 610059 , P. R. China
- Post-doctoral Mobile Research Center of Ruyuan Hec Technology Corporation , Ruyuan 512000 , Guangdong , P. R. China
| | - Zhenguo Wu
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Yadi Xu
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Yongchun Li
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Yuan Wang
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Yao Xiao
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
| | - Xiaodong Guo
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials , University of Wollongong , Innovation Campus, Squires Way , North Wollongong , NSW 2522 , Australia
| | - Benhe Zhong
- School of Chemical Engineering , Sichuan University , Chengdu 610065 , P. R. China
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