%0 Journal Article
%A Du, Jingwei
%A Zhao, Yirong
%A Chu, Xingyuan
%A Wang, Gang
%A Neumann, Christof
%A Xu, Hao
%A Li, Xiaodong
%A Löffler, Markus
%A Lu, Qiongqiong
%A Zhang, Jiaxu
%A Li, Dongqi
%A Zou, Jianxin
%A Mikhailova, Daria
%A Turchanin, Andrey
%A Feng, Xinliang
%A Yu, Minghao
%T A High‐Energy Tellurium Redox‐Amphoteric Conversion Cathode Chemistry for Aqueous Zinc Batteries
%J Advanced materials
%V 36
%N 19
%@ 0935-9648
%C Weinheim
%I Wiley-VCH
%M PUBDB-2024-01504
%P 2313621
%D 2024
%X Rechargeable aqueous zinc batteries are potential candidates for sustainable energy storage systems at a grid scale, owing to their high safety and low cost. However, the existing cathode chemistries exhibit restricted energy density, which hinders their extensive applications. Here, a tellurium redox-amphoteric conversion cathode chemistry is presented for aqueous zinc batteries, which delivers a specific capacity of 1223.9 mAh gTe<sup>−1</sup> and a high energy density of 1028.0 Wh kgTe<sup>−1</sup>. A highly concentrated electrolyte (30 mol kg<sup>−1</sup> ZnCl<sub>2</sub>) is revealed crucial for initiating the Te redox-amphoteric conversion as it suppresses the H<sub>2</sub>O reactivity and inhibits undesirable hydrolysis of the Te<sup>4+</sup> product. By carrying out multiple operando/ex situ characterizations, the reversible six-electron Te<sup>2−</sup>/Te<sup>0</sup>/Te<sup>4+</sup> conversion with TeCl<sub>4</sub> is identified as the fully charged product and ZnTe as the fully discharged product. This finding not only enriches the conversion-type battery chemistries but also establishes a critical step in exploring redox-amphoteric materials for aqueous zinc batteries and beyond.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:38316395
%U <Go to ISI:>//WOS:001160308100001
%R 10.1002/adma.202313621
%U https://bib-pubdb1.desy.de/record/605553