A flexible network polyimides binder for Si/graphite composite electrode inlithium‐ionbatteries

International Journal of Energy ResearchVolume 46, Issue 13 p. 18100-18108 RESEARCH ARTICLE A flexible network polyimides binder for Si/graphite composite electrode in lithium-ion batteries Yuanyuan Feng, Yuanyuan Feng School of Materials Science and Engineering, Soochow University, Suzhou, P. R. China Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorYubo Yang, Yubo Yang Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorChengfei Yang, Chengfei Yang Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorHuimin Sun, Huimin Sun Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorXiaowei Miao, Corresponding Author Xiaowei Miao 726746304@qq.com Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. China Correspondence Gang Yang, School of Materials Science and Engineering, Soochow University, Suzhou 215006, P. R. China. Email: gyang@cslg.edu.cn Xiaowei Miao, Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, P. R. China. Email: 726746304@qq.comSearch for more papers by this authorHongmei Ji, Hongmei Ji Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorGang Yang, Corresponding Author Gang Yang gyang@cslg.edu.cn gyang@cslg.edu.cn orcid.org/0000-0001-7706-7236 School of Materials Science and Engineering, Soochow University, Suzhou, P. R. China Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. China Correspondence Gang Yang, School of Materials Science and Engineering, Soochow University, Suzhou 215006, P. R. China. Email: gyang@cslg.edu.cn Xiaowei Miao, Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, P. R. China. Email: 726746304@qq.comSearch for more papers by this author Yuanyuan Feng, Yuanyuan Feng School of Materials Science and Engineering, Soochow University, Suzhou, P. R. China Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorYubo Yang, Yubo Yang Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorChengfei Yang, Chengfei Yang Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorHuimin Sun, Huimin Sun Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorXiaowei Miao, Corresponding Author Xiaowei Miao 726746304@qq.com Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. China Correspondence Gang Yang, School of Materials Science and Engineering, Soochow University, Suzhou 215006, P. R. China. Email: gyang@cslg.edu.cn Xiaowei Miao, Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, P. R. China. Email: 726746304@qq.comSearch for more papers by this authorHongmei Ji, Hongmei Ji Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. ChinaSearch for more papers by this authorGang Yang, Corresponding Author Gang Yang gyang@cslg.edu.cn gyang@cslg.edu.cn orcid.org/0000-0001-7706-7236 School of Materials Science and Engineering, Soochow University, Suzhou, P. R. China Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu, P. R. China Correspondence Gang Yang, School of Materials Science and Engineering, Soochow University, Suzhou 215006, P. R. China. Email: gyang@cslg.edu.cn Xiaowei Miao, Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, P. R. China. Email: 726746304@qq.comSearch for more papers by this author First published: 26 July 2022 https://doi.org/10.1002/er.8429 Funding information: National Natural Science Foundation of China, Grant/Award Number: 51802030; NSF of Jiangsu Educational Department of China, Grant/Award Number: 18KJA430001 Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Summary Although the high-capacity Si/graphite anode serves to advance the energy density of lithium-ion batteries, the volume change remains the main disfigurement of Si/graphite anode. Many studies show that crosslinked structure binders tend to play a good inhibitory effect on volume expansion. In this work, a three-dimensionally covalently cross-linked and flexible polyimides (C–PI–OH) is successfully synthesized and applied as silicon/graphite anode, which is composed through a tri-monomer co-polycondensation and crosslinking process. The as-formed free carboxylic acid groups and amide groups in C–PI–OH are efficient in structural stability, so the electrode bound by C–PI–OH exhibits the highest peeling strength than C–PI and polyvinylidene fluoride. The flexible network of the C–PI–OH binder is competent for accommodating the volume expansion and contraction of silicon particles during the deintercalation of lithium ion, which helps in the wholeness of solid electrolyte interface film and electrodes, and effectively boosting the cycle stability of the Si/graphite anode. Supporting Information Filename Description er8429-sup-0001-Figure.docxWord 2007 document , 158.3 KB Figure S1 The synthesis of C-PI Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume46, Issue1325 October 2022Pages 18100-18108 RelatedInformation