Inorganic crosslinked supramolecular binder with fast Self-Healing for high performance silicon based anodes in Lithium-Ion batteries

Junkai Zhao; Daina Wei; Jianjun Wang; Kaimeng Yang; Zhaolong Wang; Zhengjian Chen; Shiguo Zhang; Ce Zhang; Xiaojing Yang

doi:10.1016/j.jcis.2022.06.002

Inorganic crosslinked supramolecular binder with fast Self-Healing for high performance silicon based anodes in Lithium-Ion batteries

J Colloid Interface Sci. 2022 Nov:625:373-382. doi: 10.1016/j.jcis.2022.06.002. Epub 2022 Jun 6.

Authors

Junkai Zhao¹, Daina Wei¹, Jianjun Wang², Kaimeng Yang², Zhaolong Wang³, Zhengjian Chen⁴, Shiguo Zhang⁵, Ce Zhang⁶, Xiaojing Yang⁷

Affiliations

¹ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China; Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, China.
² Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China.
³ Interdisciplinary Research Center of Low-carbon Technology and Equipment, College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China. Electronic address: zhaolongwang@hnu.edu.cn.
⁴ Biomaterials R&D Center, Zhuhai Institute of Advanced Technology, Chinese Academy of Sciences, Zhuhai 519003, China.
⁵ College of Materials Science and Engineering, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China.
⁶ Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST), Beijing 100094, China. Electronic address: zhangce@qxslab.cn.
⁷ Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China. Electronic address: yang.xiaojing@bnu.edu.cn.

PMID: 35717851
DOI: 10.1016/j.jcis.2022.06.002

Abstract

Capacity retention is one of the key factors affecting the performance of silicon (Si)-based lithium-ion batteries and other energy storage devices. Herein, a three dimension (3D) network self-healing binder (denoted as PVA + LB) consisting of polyvinyl alcohol (PVA) and lithium metaborate (LiBO₂) solution is proposed to improve the cycle stability of Si-based lithium-ion batteries. The reversible capacity of the silicon electrode is maintained at 1767.3 mAh g^-1 after 180 cycles when employing PVA + LB as the binder, exhibiting excellent cycling stability. In addition, the silicon/carbon (Si/C) anode with the PVA + LB binder presents superior electrochemical performance, achieving a stable cycle life with a capacity retention of 73.7% (858.3 mAh g^-1) after 800 cycles at a current density of 1 A g^-1. The high viscosity and flexibility, 3D network structure, and self-healing characteristics of the PVA + LB binder are the main reasons to improve the stability of the Si or Si/C contained electrodes. The novel self-healing binder shows great potential in designing the new generation of silicon-based lithium-ion batteries and even electrochemical energy storage devices.

Keywords: Cycle stability; Lithium-ion battery; Self-healing; Si-based anode; Supramolecular.