致潮剂
阴极
水溶液
电解质
电池(电)
材料科学
化学工程
热稳定性
锌
电化学
尿素
化学
电极
有机化学
冶金
功率(物理)
物理化学
工程类
物理
量子力学
作者
Qi Dong,Huaisheng Ao,Zili Qin,Zhibin Xu,Jiajia Ye,Yitai Qian,Zhiguo Hou
出处
期刊:Small
[Wiley]
日期:2022-09-15
卷期号:18 (44)
被引量:4
标识
DOI:10.1002/smll.202203347
摘要
Although rechargeable zinc-ion batteries are promising candidates for next-generation energy storage devices, their inferior performance at subzero temperatures limits their practical application. Here, a strategy to destroy the H-bond network by adding synergistic chaotropic regents is reported, thus reducing the freezing point of the aqueous electrolyte below -90 °C. Owing to the synergistic chaotropic effect between urea and Zn(ClO4 )2 and the thermal release effect on the cathode interface during charging, Zn//VO2 batteries feature a specific capacity of 111.4 mAh g-1 and stability after ≈1000 cycles with 81.9% capacity retention at -40 °C. This work demonstrates that the synergistic chaotropic effect and the thermal effect on the interface can effectively widen the operation range of temperature of aqueous electrolytes and maintain fast kinetics, which provides a new design strategy for all-weather aqueous zinc batteries.
科研通智能强力驱动
Strongly Powered by AbleSci AI