TY  - JOUR
AU  - Du, Jingwei
AU  - Zhao, Yirong
AU  - Chu, Xingyuan
AU  - Wang, Gang
AU  - Neumann, Christof
AU  - Xu, Hao
AU  - Li, Xiaodong
AU  - Löffler, Markus
AU  - Lu, Qiongqiong
AU  - Zhang, Jiaxu
AU  - Li, Dongqi
AU  - Zou, Jianxin
AU  - Mikhailova, Daria
AU  - Turchanin, Andrey
AU  - Feng, Xinliang
AU  - Yu, Minghao
TI  - A High‐Energy Tellurium Redox‐Amphoteric Conversion Cathode Chemistry for Aqueous Zinc Batteries
JO  - Advanced materials
VL  - 36
IS  - 19
SN  - 0935-9648
CY  - Weinheim
PB  - Wiley-VCH
M1  - PUBDB-2024-01504
SP  - 2313621
PY  - 2024
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - pmid:38316395
UR  - <Go to ISI:>//WOS:001160308100001
DO  - DOI:10.1002/adma.202313621
UR  - https://bib-pubdb1.desy.de/record/605553
ER  -