文献类型：期刊文献

英文题名：High-voltage K/Zn dual-ion battery with 100,000-cycles life using zero-strain ZnHCF cathode

作者：Li, Qian[1];Ma, Kaixuan[1];Hong, Cheng[1];Yang, Zhen[2];Qi, Chenze[2];Yang, Gongzheng[1];Wang, Chengxin[1]

机构：[1]Sun Yat Sen Zhongshan Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China;[2]Shaoxing Univ, Coll Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China

年份：2021

卷号：42

起止页码：715

外文期刊名：ENERGY STORAGE MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000701975900005)、、EI(收录号：20220311467152)、Scopus(收录号：2-s2.0-85122661505)、WOS

基金：This work was supported by the National Natural Science Foundation of China (91963210, U1801255, and 51872340) and General Program of Natural Science Foundation of Guangdong Province, China (2021A1515010143).

语种：英文

外文关键词：Anodes - Cathodes - Electrolytes - Secondary batteries - Zinc - Zinc compounds

外文摘要：Rechargeable zinc-based batteries (RZBs) using low-cost zinc metal anodes are feasible for large-scale energy storage, but the developments currently are restricted by the poor performances. Here we constructed a particular dual-ion battery (DIB) based on zinc hexacyanoferrate (ZnHCF) cathode, zinc metal anode, and non-aqueous K+/Zn2+ hybrid ions electrolyte. It was revealed that K+-ions occupied almost all the cavities in ZnHCF at high voltage over 1.7 V (vs. Zn2+/Zn), which effectively blocked Zn2+-ions insertion. The ZnHCF showed a zero-strain characteristic during the repeated K+-ions intake/removal. Meanwhile, the charge screening effect of additive K+-ions on optimizing the zinc electrodeposition process ensured the reversible and dendrite-free Zn plating/stripping. The DIBs demonstrated excellent rate performances (57 and 47 mAh g(cathode)(-1) at 2000 and 5000 mA g(-1), respectively) and incredibly 100,000-cycles life with 74% capacity retention.