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Pan L, Feng S, Sun H, Liu XX, Yuan P, Cao M, Gao M, Wang Y, Sun Z. Ultrathin, Mechanically Durable, and Scalable Polymer-in-Salt Solid Electrolyte for High-Rate Lithium Metal Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400272. [PMID: 38623970 DOI: 10.1002/smll.202400272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/21/2024] [Indexed: 04/17/2024]
Abstract
Polymer-in-salt solid-state electrolytes (PIS SSEs) are emerging for high room-temperature ionic conductivity and facile handling, but suffer from poor mechanical durability and large thickness. Here, Al2O3-coated PE (PE/AO) separators are proposed as robust and large-scale substrates to trim the thickness of PIS SSEs without compromising mechanical durability. Various characterizations unravel that introducing Al2O3 coating on PE separators efficiently improves the wettability, thermal stability, and Li-dendrite resistance of PIS SSEs. The resulting PE/AO@PIS demonstrates ultra-small thickness (25 µm), exceptional mechanical durability (55.1 MPa), high decomposition temperature (330 °C), and favorable ionic conductivity (0.12 mS cm-1 at 25 °C). Consequently, the symmetrical Li cells remain stable at 0.1 mA cm-2 for 3000 h, without Li dendrite formation. Besides, the LiFePO4|Li full cells showcase excellent rate capability (131.0 mAh g-1 at 10C) and cyclability (93.6% capacity retention at 2C after 400 cycles), and high-mass-loading performance (7.5 mg cm-2). Moreover, the PE/AO@PIS can also pair with nickel-rich layered oxides (NCM811 and NCM9055), showing a remarkable specific capacity of 165.3 and 175.4 mAh g-1 at 0.2C after 100 cycles, respectively. This work presents an effective large-scale preparation approach for mechanically durable and ultrathin PIS SSEs, driving their practical applications for next-generation solid-state Li-metal batteries.
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Affiliation(s)
- Long Pan
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Shengfa Feng
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Hui Sun
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Xiong Xiong Liu
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Pengcheng Yuan
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Mufan Cao
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Min Gao
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - Yaping Wang
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
| | - ZhengMing Sun
- Key Laboratory of Advanced Metallic Materials of Jiangsu Province, School of Materials Science and Engineering, Southeast University, Nanjing, 211189, P. R. China
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2
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Zhang X, Zhao H, Wang N, Xiao Y, Liang S, Yang J, Huang X. Gradual gradient distribution composite solid electrolyte for solid-state lithium metal batteries with ameliorated electrochemical performance. J Colloid Interface Sci 2024; 658:836-845. [PMID: 38154246 DOI: 10.1016/j.jcis.2023.12.120] [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: 10/12/2023] [Revised: 11/29/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
Composite solid electrolytes (CSEs) have emerged as promising contenders for tackling the safety concerns associated with lithium metal batteries and attaining elevated energy densities. Nonetheless, augmenting ion conductivity and curtailing the growth of lithium dendrites within the electrolyte remain pressing challenges. We have developed CSEs featuring a unique structure, in which Li6.4La3Zr1.4Ta0.6O12 (LLZTO) is distributed in a gradient decline from the center to both sides (GCSE). This distinctive arrangement encompasses heightened polymer content at the edges, thereby enhancing the compatibility between CSEs and electrode materials. Concurrently, the escalated LLZTO content at the center functions to impede the proliferation of lithium dendrites. The uniform gradient distribution state facilitates the consistent and rapid transport of lithium ions. At room temperature, GCSE exhibits an ionic conductivity of 1.5 × 10-4 S cm-1, with stable constant current cycling of lithium for over 1200 h. Furthermore, CR2032 coin batteries with a LiFePO4 (LFP)|GCSE|Li configuration demonstrate excellent rate performance and cycling stability, yielding a discharge capacity of 120 mA h g-1 at 0.5C and retaining 90 % capacity after 200 cycles at 60 °C. Flexible solid electrolytes with gradient structures offer substantial advantages in dealing with ion conductivity and inhibition of lithium dendrites, thereby expected to propel the practical application of lithium metal batteries.
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Affiliation(s)
- Xiaobao Zhang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Huan Zhao
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Ning Wang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Yiyang Xiao
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Shiang Liang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Juanyu Yang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China.
| | - Xiaowei Huang
- National Engineering Research Center for Rare Earth, Grirem Advanced Materials Co., Ltd., Beijing 100088, China; Rare Earth Functional Materials (Xiong'an) Innovation Center Co., Ltd., Xiong'an 071700, China; General Research Institute for Nonferrous Metals, Beijing 100088, China.
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3
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Costa CM, Cardoso VF, Martins P, Correia DM, Gonçalves R, Costa P, Correia V, Ribeiro C, Fernandes MM, Martins PM, Lanceros-Méndez S. Smart and Multifunctional Materials Based on Electroactive Poly(vinylidene fluoride): Recent Advances and Opportunities in Sensors, Actuators, Energy, Environmental, and Biomedical Applications. Chem Rev 2023; 123:11392-11487. [PMID: 37729110 PMCID: PMC10571047 DOI: 10.1021/acs.chemrev.3c00196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Indexed: 09/22/2023]
Abstract
From scientific and technological points of view, poly(vinylidene fluoride), PVDF, is one of the most exciting polymers due to its overall physicochemical characteristics. This polymer can crystalize into five crystalline phases and can be processed in the form of films, fibers, membranes, and specific microstructures, being the physical properties controllable over a wide range through appropriate chemical modifications. Moreover, PVDF-based materials are characterized by excellent chemical, mechanical, thermal, and radiation resistance, and for their outstanding electroactive properties, including high dielectric, piezoelectric, pyroelectric, and ferroelectric response, being the best among polymer systems and thus noteworthy for an increasing number of technologies. This review summarizes and critically discusses the latest advances in PVDF and its copolymers, composites, and blends, including their main characteristics and processability, together with their tailorability and implementation in areas including sensors, actuators, energy harvesting and storage devices, environmental membranes, microfluidic, tissue engineering, and antimicrobial applications. The main conclusions, challenges and future trends concerning materials and application areas are also presented.
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Affiliation(s)
- Carlos M. Costa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Vanessa F. Cardoso
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Pedro Martins
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | | | - Renato Gonçalves
- Center of
Chemistry, University of Minho, 4710-057 Braga, Portugal
| | - Pedro Costa
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- Institute
for Polymers and Composites IPC, University
of Minho, 4804-533 Guimarães, Portugal
| | - Vitor Correia
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Clarisse Ribeiro
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
| | - Margarida M. Fernandes
- CMEMS-UMinho, University of
Minho, DEI, Campus de
Azurém, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, Campus de
Gualtar, 4800-058 Braga, Guimarães, Portugal
| | - Pedro M. Martins
- Institute
of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
- Centre
of Molecular and Environmental Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Méndez
- Physics
Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal
- Laboratory
of Physics for Materials and Emergent Technologies, LapMET, University of Minho, 4710-057 Braga, Portugal
- BCMaterials,
Basque Center for Materials, Applications
and Nanostructures, UPV/EHU
Science Park, 48940 Leioa, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
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4
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Chen A, Zeng Q, Wen W, Wen X, Li Z, Liu Y, Guan J, Wang H, Liu W, Chen P, Zhang L. A Highly Salt-Soluble Ketone-Based All-Solid-State Polymer Electrolyte with Superior Performances for Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17791-17800. [PMID: 36989399 DOI: 10.1021/acsami.2c22228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Solid polymer electrolytes (SPEs) have great potential to be used in high-safety lithium-ion batteries (LIBs). However, it is still a significant challenge for SPEs to develop high ionic conductivity, high mechanical strength, and good interior interfacial compatibility. In this work, a ketone-based all-solid-state electrolyte (PAD) resulting from allyl acetoacetate (AAA), diacetone acrylamide (DAAM), and poly(ethylene glycol) diacrylate (PEGDA) was prepared by UV-inducing photopolymerization. The abundant ketone groups endow the prepared PAD all-solid-state electrolyte with strong dissociation of lithium salts and weak coordination interactions between ketone groups and Li+. Depending on the unique properties of the ketone groups in the electrolyte system, the prepared polymer electrolytes show a high lithium-ion transference number of 0.87 and a wide electrochemical window of 4.95 V. Furthermore, the PAD electrolyte also exhibits superior viscoelasticity, which is beneficial for good contact with electrodes. As a result, the assembled LFP/PAD/Li cells with PAD electrolytes show good cycle performance and rate performance. Concretely, the all-solid-state symmetric lithium cells with the PAD electrolyte can achieve stable lithium plating and stripping at 0.05 mA cm-2 for over 1000 h at 60 °C. This work highlights the advantages of ketone-based electrolyte as a polymer electrolyte and provides a design method for advanced polymer electrolytes applied in high-performance solid lithium batteries.
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Affiliation(s)
- Anqi Chen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qinghui Zeng
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wen Wen
- Research Institute of Petroleum Exploration & Development (RIPED), PetroChina, Beijing 100083, China
| | - Xin Wen
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhenfeng Li
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiazhu Guan
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Honghao Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei Liu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pingping Chen
- School of Materials, North China University of Water Resources and Electric Power, Zhengzhou 450000, China
| | - Liaoyun Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Nguyen AG, Park CJ. Insights into tailoring composite solid polymer electrolytes for solid-state lithium batteries. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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6
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Qin Z, He X, Xu J, Deng J, Zang X, Yang G, Lu Y, Zou S, Huang L, Chen D. Solid polymer electrolyte membrane based on cationic polynorbornenes with pending imidazolium functional groups for all‐solid‐state lithium‐ion batteries. J Appl Polym Sci 2023. [DOI: 10.1002/app.53601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Zengwei Qin
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Xiaohui He
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Jiang Xu
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Jiahao Deng
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Xiujing Zang
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Guoxiao Yang
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Yao Lu
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Shaoyu Zou
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Liang Huang
- School of Physics and Materials Science Nanchang University Nanchang China
| | - Defu Chen
- School of Civil Engineering and Architecture Nanchang University Nanchang China
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7
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Hu Z, Zhang Y, Long X, Bao W, Zhang Y, Fan W, Cheng H. Hydroxyl-rich single-ion conductors enable solid hybrid polymer electrolytes with excellent compatibility for dendrite-free lithium metal batteries. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Yuan B, Cong Z, Cheng Z, Li L, Xia L, Yan J, Shen F, Zhao B, Han X. Bacteria cellulose framework-supported solid composite polymer electrolytes for ambient-temperature lithium metal batteries. NANOTECHNOLOGY 2022; 33:415401. [PMID: 35385837 DOI: 10.1088/1361-6528/ac64ab] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Composite polymer electrolyte (CPE) films with high room temperature ionic conductivity are urgently needed for the practical application of high-safety solid-state batteries (SSBs). Here, a flexible polymer-polymer CPE thin film reinforced by a three-dimensional (3D) bacterial cellulose (BC) framework derived from natural BC hydrogel was prepared via thein situphoto-polymerization method. The BC film was utilized as the supporting matrix to ensure high flexibility and mechanical strength. The BC-CPE attained a high room temperature ionic conductivity of 1.3 × 10-4S cm-1. The Li∣BC-CPE∣Li symmetric cell manifested stable cycles of more than 1200 h. The LCO∣BC-CPE∣Li full cell attained an initial discharge specific capacity of 128.7 mAh g-1with 82.6% discharge capacity retention after 150 cycles at 0.2 C under room temperature. The proposed polymer-polymer CPE configuration represents a promising route for manufacturing environmental SSBs, especially since cellulose biomaterials are abundant in nature.
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Affiliation(s)
- Boheng Yuan
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Zhi Cong
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Zhi Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Lei Li
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Linan Xia
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Jieda Yan
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Fei Shen
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Bin Zhao
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Xiaogang Han
- State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
- Key Laboratory of Smart Grid of Shaanxi Province, Xi'an, Shaanxi 710049, People's Republic of China
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9
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Voropaeva DY, Safronova EY, Novikova SA, Yaroslavtsev AB. Recent progress in lithium-ion and lithium metal batteries. MENDELEEV COMMUNICATIONS 2022. [DOI: 10.1016/j.mencom.2022.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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10
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Wang B, Wang G, He P, Fan LZ. Rational design of ultrathin composite solid-state electrolyte for high-performance lithium metal batteries. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119952] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Zou L, Shi K, Xu Z, Yang Z, Zhang W. Double-Layer Solid Composite Electrolytes Enabling Improved Room-Temperature Cycling Performance for High-Voltage Lithium Metal Batteries. ACS OMEGA 2022; 7:994-1002. [PMID: 35036763 PMCID: PMC8757445 DOI: 10.1021/acsomega.1c05576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The development of solid-state electrolytes (SSEs) for high energy density lithium metal batteries (LMBs) usually needs to take into account of the interfacial compatibility against lithium metal and the electrolyte stability suitable for a high-potential cathode. In this study, through a facile two-step coating process, novel double-layer solid composite electrolytes (SCEs) with Janus characteristics are customized for the high-voltage LMBs with improved room-temperature cycling performance. Among which, high-voltage resistant poly(vinylidene fluoride) (PVDF) is adopted here for the construction of an electrolyte layer facing the cathode, while the other layer against the lithium anode is composed of the polymer matrix of poly(ethylene oxide) (PEO) blended with PVDF to obtain a lithium metal-friendly interface. With the further incorporation of Laponite clay, the PVDF/(PEO+PVDF)-L SCEs not only exhibit improved mechanical properties, but also achieve a highly increased ionic conductivity (5.2 × 10-4 S cm-1) and lithium ion migration number (0.471) at room temperature. The assembled NCM523|PVDF/(PEO+PVDF)-L SCEs|Li cells thus are able to deliver the initial discharge capacity of 153.9 mAh g-1 with 80.8% capacity retention after 200 cycles at 0.3 C. Such easily manufactured double-layer SCEs capable of operating steadily at room temperature provide a competitive electrolyte option for high-voltage solid-state LMBs.
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Affiliation(s)
- Lei Zou
- School
of Chemistry and Chemical Engineering, Hefei
University of Technology, Hefei, Anhui 230009, China
| | - Kun Shi
- School
of Chemistry and Chemical Engineering, Hefei
University of Technology, Hefei, Anhui 230009, China
- Institute
of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230031, China
| | - Zhengjie Xu
- School
of Chemistry and Chemical Engineering, Hefei
University of Technology, Hefei, Anhui 230009, China
| | - Zeheng Yang
- School
of Chemistry and Chemical Engineering, Hefei
University of Technology, Hefei, Anhui 230009, China
| | - Weixin Zhang
- School
of Chemistry and Chemical Engineering, Hefei
University of Technology, Hefei, Anhui 230009, China
- Institute
of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230031, China
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12
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Epoxy-Based Interlocking Membranes for All Solid-State Lithium Ion Batteries: The Effects of Amine Curing Agents on Electrochemical Properties. Polymers (Basel) 2021; 13:polym13193244. [PMID: 34641061 PMCID: PMC8513100 DOI: 10.3390/polym13193244] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/19/2021] [Accepted: 09/23/2021] [Indexed: 12/02/2022] Open
Abstract
In this study, a series of crosslinked membranes were prepared as solid polymer electrolytes (SPEs) for all-solid-state lithium ion batteries (ASSLIBs). An epoxy-containing copolymer (glycidyl methacrylate-co-poly(ethylene glycol) methyl ether methacrylate, PGA) and two amine curing agents, linear Jeffamine ED2003 and hyperbranched polyethyleneimine (PEI), were utilized to prepare SPEs with various crosslinking degrees. The PGA/polyethylene oxide (PEO) blends were cured by ED2003 and PEI to obtain slightly and heavily crosslinked structures, respectively. For further optimizing the interfacial and the electrochemical properties, an interlocking bilayer membrane based on overlapping and subsequent curing of PGA/PEO/ED2003 and PEO/PEI layers was developed. The presence of this amino/epoxy network can inhibit PEO crystallinity and maintain the dimensional stability of membranes. For the slightly crosslinked PGA/PEO/ED2003 membrane, an ionic conductivity of 5.61 × 10−4 S cm−1 and a lithium ion transference number (tLi+) of 0.43 were obtained, along with a specific capacity of 156 mAh g−1 (0.05 C) acquired from an assembled half-cell battery. However, the capacity retention retained only 54% after 100 cycles (0.2 C, 80 °C), possibly because the PEO-based electrolyte was inclined to recrystallize after long term thermal treatment. On the other hand, the highly crosslinked PGA/PEO/PEI membrane exhibited a similar ionic conductivity of 3.44 × 10−4 S cm−1 and a tLi+ of 0.52. Yet, poor interfacial adhesion between the membrane and the cathode brought about a low specific capacity of 48 mAh g−1. For the reinforced interlocking bilayer membrane, an ionic conductivity of 3.24 × 10−4 S cm−1 and a tLi+ of 0.42 could be achieved. Moreover, the capacity retention reached as high as 80% after 100 cycles (0.2 C, 80 °C). This is because the presence of the epoxy-based interlocking bilayer structure can block the pathway of lithium dendrite puncture effectively. We demonstrate that the unique interlocking bilayer structure is capable of offering a new approach to fabricate a robust SPE for ASSLIBs.
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