ZIF-8 derived porous carbon to mitigate shuttle effect for high performance aqueous zinc-iodine batteries

Junwei Xu; Jinguo Wang; Linheng Ge; Junru Sun; Wenqing Ma; Manman Ren; Xiaoxia Cai; Weiliang Liu; Jinshui Yao

doi:10.1016/j.jcis.2021.12.043

ZIF-8 derived porous carbon to mitigate shuttle effect for high performance aqueous zinc-iodine batteries

J Colloid Interface Sci. 2022 Mar 15:610:98-105. doi: 10.1016/j.jcis.2021.12.043. Epub 2021 Dec 8.

Authors

Junwei Xu¹, Jinguo Wang¹, Linheng Ge¹, Junru Sun¹, Wenqing Ma², Manman Ren¹, Xiaoxia Cai¹, Weiliang Liu³, Jinshui Yao¹

Affiliations

¹ School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China.
² School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China. Electronic address: wqma@tju.edu.cn.
³ School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China. Electronic address: wlliu@sdu.edu.cn.

PMID: 34922086
DOI: 10.1016/j.jcis.2021.12.043

Abstract

Rechargeable aqueous zinc-iodine batteries (ZIBs) with low environmental impacts and abundant natural reserves have emerged as promising electrochemical energy storage devices. However, the shuttle effect and low conductivity of the iodine species cause poor electrochemical performance and hinder their practical application. Herein, we propose a ZIF-8 derived porous carbon (ZPC) for iodine species immobilization in ZIBs. The rich porous structure and highly conductive framework of ZPC provide efficient iodine loading and allow the fast transmission of electrons. In addition, the presence of N, Zn and ZnO in the carbon framework can build chemical anchoring with the iodine species to mitigate the shuttle effect. Thus, the ZPC/I₂ cathode exhibits a reversible capacity of 156 mAh g^-1 after 100 cycles at 100 mA g^-1 and a long-term stability of 1000 cycles at a high rate. This study will open a new paradigm for devolving highly reversible ZIBs.

Keywords: Aqueous zinc−iodine battery; Heteroatom doping; Physical and chemical confinement; ZIF-8 derived porous carbon.