TY - JOUR
T1 - Zinc/selenium conversion battery: A system highly compatible with both organic and aqueous electrolytes
AU - CHEN, Ze
AU - MO, Funian
AU - WANG, Tairan
AU - YANG, Qi
AU - HUANG, Zhaodong
AU - WANG, Donghong
AU - LIANG, Guojing
AU - CHEN, Ao
AU - LI, Qing
AU - GUO, Ying
AU - LI, Xinliang
AU - FAN, Jun
AU - ZHI, Chunyi
N1 - This research was supported by the National Key R&D Program of China under Project 2019YFA0705104.
PY - 2021/4/1
Y1 - 2021/4/1
N2 - Zinc ion batteries (ZIBs) typically work well in aqueous electrolytes. Most high-performance cathode materials of aqueous ZIBs exhibit much-deteriorated capacity, voltage plateau and rate capability in organic electrolytes. It remains a challenge to have a Zn battery that is highly compatible with both aqueous and organic electrolytes. Herein, a conversion-type Zn-Se battery is constructed, which delivers a superior performance in both organic and aqueous electrolytes benefiting from a highly reversible conversion reaction between Se and ZnSe. Extraordinary capacities in organic systems (551 mA h gSe-1) and aqueous systems (611 mA h gSe-1) were successfully achieved, accompanied by a remarkable rate performance and cycling performance in each of the two systems. In addition, very low voltage plateau slopes, 0.94 V/(A h g-1) and 0.61 V/(A h g-1), are obtained for organic and aqueous systems, respectively, due to the advanced conversion mechanism. These unique features equip these Zn-Se batteries with unprecedented energy densities of up to 581 W h kgSe-1 (290 W h kgSe/CMK-3-1) for the organic system and 751 W h kgSe-1 (375 W h kgSe/CMK-3-1) for the aqueous system. Our research has developed a new Zn battery chemistry that benefits from a conversion mechanism and is highly compatible with both organic and aqueous electrolytes, opening a door for zinc batteries to achieve a higher energy density and better compatibility with various electrolytes.
AB - Zinc ion batteries (ZIBs) typically work well in aqueous electrolytes. Most high-performance cathode materials of aqueous ZIBs exhibit much-deteriorated capacity, voltage plateau and rate capability in organic electrolytes. It remains a challenge to have a Zn battery that is highly compatible with both aqueous and organic electrolytes. Herein, a conversion-type Zn-Se battery is constructed, which delivers a superior performance in both organic and aqueous electrolytes benefiting from a highly reversible conversion reaction between Se and ZnSe. Extraordinary capacities in organic systems (551 mA h gSe-1) and aqueous systems (611 mA h gSe-1) were successfully achieved, accompanied by a remarkable rate performance and cycling performance in each of the two systems. In addition, very low voltage plateau slopes, 0.94 V/(A h g-1) and 0.61 V/(A h g-1), are obtained for organic and aqueous systems, respectively, due to the advanced conversion mechanism. These unique features equip these Zn-Se batteries with unprecedented energy densities of up to 581 W h kgSe-1 (290 W h kgSe/CMK-3-1) for the organic system and 751 W h kgSe-1 (375 W h kgSe/CMK-3-1) for the aqueous system. Our research has developed a new Zn battery chemistry that benefits from a conversion mechanism and is highly compatible with both organic and aqueous electrolytes, opening a door for zinc batteries to achieve a higher energy density and better compatibility with various electrolytes.
UR - http://www.scopus.com/inward/record.url?scp=85104706260&partnerID=8YFLogxK
U2 - 10.1039/d0ee02999h
DO - 10.1039/d0ee02999h
M3 - Journal Article (refereed)
AN - SCOPUS:85104706260
SN - 1754-5692
VL - 14
SP - 2441
EP - 2450
JO - Energy and Environmental Science
JF - Energy and Environmental Science
IS - 4
ER -
