Spidroin‐Inspired Hierarchical Structure Binder Achieves Highly Integrated Silicon‐Based Electrodes

Author:

Mu Pengzhou12,Zhang Shu1,Zhang Huanrui1,Li Jiedong1,Liu Zhi1,Dong Shanmu1,Cui Guanglei1ORCID

Affiliation:

1. Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 P. R. China

2. University of Chinese Academy of Sciences Beijing 100190 P.R. China

Abstract

AbstractAs a promising component for next‐generation high energy lithium‐ion batteries, silicon‐based electrode has attracted increasing attention by virtue of ultrahigh theoretical specific capacities. Nevertheless, fast capacity fade posed by tremendous silicon‐based electrode volume changes during cycling remains a huge challenge before large‐scale applications. Herein we develop an aqueous‐oil binary solution based blend (AOB) binder characterized by a spidroin‐like hierarchical structure for tolerating huge volume change of silicon‐based electrodes. In AOB binder, the hydrophobic tetrazole groups‐containing polymer (donate as PPB) and water‐soluble amorphous poly(acrylic acid) mimicks the β‐sheet and α‐helix structure of spidroin, respectively. Benefitted by such biomimetic design, AOB binder enables both high tensile strength and elasticity, and strong electrode adhesion, therefore apparently stabilizing silicon‐based electrode structure and rendering prolonged electrode cycle life. Such a strategy endows a 3.3 Ah soft package cells assembled with Si/C composite anode and NCM811 cathode with a discharge specific capacity of 2.92 Ah after 700 cycles. This work marks a milestone in developing state‐of‐the‐art silicon‐based electrodes towards high energy density lithium battery applications.This article is protected by copyright. All rights reserved

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3