Percolating coordinated ion transport cells in polymer electrolytes to realize room-temperature solid-state lithium metal batteries
By
Liu, YX (Liu, Yuxuan) [1] ; Zhang, DC (Zhang, Dechao) [1] ; Luo, LJ (Luo, Lingjie) [1] ; Li, ZY (Li, Ziyong) [1] ; Lin, H (Lin, Han) [1] ; Liu, J (Liu, Jun) [1] ; Zhao, YJ (Zhao, Yujun) [1] , [2] ; Hu, RZ (Hu, Renzong) [1] ; Zhu, M (Zhu, Min) [1]
(provided by Clarivate)
Source
ENERGY STORAGE MATERIALS
Volume70
DOI10.1016/j.ensm.2024.103548
Article Number
103548
Published
JUN 2024
Early Access
JUN 2024
Indexed
2024-07-06
Document Type
Article
Abstract
Polymer electrolytes, notable for their good mechanical properties, superior processability, and high electrochemical stability, are promising for high-energy-density lithium metal batteries. However, the ionic conduction of polymer electrolytes is seriously constrained by either the entanglement of polymer chains or binding of anions, particularly at ambient temperatures, making their practical application impossible. Herein, we employ a high-salt-concentration strategy with poly(vinylene carbonate) to construct a percolating network by linking coordinated ion transport cells. The cells, consisting of lithium-ion at the core surrounded by coordinated poly (vinylene carbonate), N,N-dimethylformamide, or incompletely bonded bis(trifluoromethanesulfonyl)imide, ensure an efficient coordination and de-coordination process for ion transport. Thus, a high rate of Li+ transport is realized, achieving an ionic conductivity of 0.82 mS cm(-1) at 30 degrees C. Consequently, the formulated solid-state lithium metal batteries with the poly(vinylene carbonate) electrolyte enable superior stability in cycling under a wide temperature range (0-60 degrees C), high working voltage (4.5 V), and high mass load (>10 mg cm(-2)). This simple strategy for creating an ion-percolating network by linking coordinated ion transport cells not only offers new insights into understanding the mechanism for ion transport in polymer electrolytes but also paves the way for the application of solid-state lithium metal batteries.
Keywords
Author KeywordsPolymer electrolyteSolid-state batteriesPercolating network
Keywords PlusIN-SALT ELECTROLYTEDYNAMICSCHALLENGESDESIGN
Author Information
Corresponding Address
Hu, Renzong;
Zhu, Min
(corresponding author)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
Affiliation
South China University of Technology
South China University of Technology School of Materials Science and Engineering
South China University of Technology Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials
E-mail Addresses
msrenzonghu@scut.edu.cn
Addresses
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
2 South China Univ Technol, Dept Phys, Guangzhou 510640, Peoples R China
E-mail Addresses
msrenzonghu@scut.edu.cnmemzhu@scut.edu.cn
Categories/ Classification
Research AreasChemistryScience & Technology - Other TopicsMaterials Science
Citation Topics
2 Chemistry
2.62 Electrochemistry
2.62.616 Lithium-Sulfur Batteries
Sustainable Development Goals
11 Sustainable Cities and Communities
Web of Science Categories
Chemistry, PhysicalNanoscience & NanotechnologyMaterials Science, Multidisciplinary