Porous Aromatic Frameworks Enabling Polyiodide Confinement toward High Capacity and Long Lifespan Zinc–Iodine Batteries

Author:

Hu Junfang1,Zhang Zhaofu1,Deng Ting2,Cui Feng Chao1,Shi Xiaoyuan1,Tian Yuyang1,Zhu Guangshan1ORCID

Affiliation:

1. Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry Northeast Normal University Changchun 130024 China

2. School of Materials Science and Engineering Jilin University Changchun 130012 China

Abstract

AbstractAqueous zinc–iodine batteries (AZIBs) are attracting increasing attention because of their high safety and abundance of resources. However, the performance of AZIBs is compromised by inadequate confinement of soluble polyiodides, the undesired shuttle effect, and slow reaction kinetics. In this study, a porous aromatic framework (PAF) with abundant benzene motifs and a well‐organized pore structure is adopted as the iodine host, which exhibits high iodine adsorption capacity and robust polyiodide confinement. Both experimental characterizations and theoretical simulations indicate that the interactions between iodine species and the PAF‐1 facilitate the redox reaction by coupling the electronic structures of the active species in the framework. A comparison of PAF‐1, PAF‐5, and PAF‐11 also emphasizes the structural advantages of the high surface area and interconnected three‐dimensional channels of PAF‐1. Consequently, the I2@PAF‐1 cathode can deliver a high capacity of 328 mAh g−1 at 0.5 C, outstanding rate performance, and a stable cycling life of 20 000 cycles (86 % retention at 10 C). The robust polyiodide confinement and superb electrochemical performance of Zn–I2@PAF‐1 provide insights into the practical application of PAFs as excellent electrode materials for AZIBs.

Funder

Fundamental Research Funds for the Central Universities

National Natural Science Foundation of China

Key Technologies Research and Development Program of Anhui Province

Natural Science Foundation of Jilin Province

Publisher

Wiley

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