Pushing the Limit of Flexible Batteries

作     者：Chuan Xie Yanpeng Guo Zijian Zheng Chuan Xie;Yanpeng Guo;Zijian Zheng

作者机构：Department of Applied Biology and Chemical TechnologyFaculty of ScienceThe Hong Kong Polytechnic UniversityHung HomHong Kong School of Fashion and TextilesThe Hong Kong Polytechnic UniversityHung HomHong Kong Research Institute for Intelligent Wearable Systems(RI-IWEAR)The Hong Kong Polytechnic UniversityHung HomHong Kong Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHung HomHong Kong 

出 版 物：《CCS Chemistry》 (中国化学会会刊（英文）)

年 卷 期：2023年第5卷第3期

页      面：531-543页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0703[理学-化学] 

基　　金：The authors acknowledge financial support from RGC Postdoctoral Fellowship Scheme(grant no.PDFS2223_5S01) Science and Technology Bureau of Huangpu District(grant no.2020GH03) Innovation and Technology Fund(grant nos.GHP/047/20GD and PRP/055/21FX). 

主　　题：flexible battery energy density safety lithium battery zinc battery 

摘      要：Alongside the rapid development of flexible and wearable electronics,the search for reliable,safe,and high-energy rechargeable flexible batteries(FBs)has become a research hotspot in recent years.Although there are some prototype FBs exhibited by the industry and a rapidly increasing number of publications reported by academia,most demonstrations are shown on a laboratory scale,and it is still difficult to find real implementation of the technology in the market.This perspective aims to discuss and analyze the key metrics,including energy density,flexibility,and safety,that are critical to pushing FBs to a commercially viable level,with a special focus on the lithium batteries and zinc batteries most reported in the literature.We first compare the figure of merit of FBs(fbFOM)of existing lithium-based and zinc-based FBs with the requirement for market applications.We then analyze the most desired cell configurations toward high flexibility,followed by systematic discussions on features and materials selection toward high energy density FBs.Third,we discuss strategies to enhance battery safety.An outlook of the future developments needed to address the gaps between the state-of-the-art demonstrations and real applications is provided at the end of this article.