@article{Song2022, 
author = {Chunlai Song and Zongshuai Gong and Chong Bai and Fengshi Cai and Zhihao Yuan and Xizheng Liu},
title = {High performance Zn-I2 battery with acetonitrile electrolyte working at low temperature},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {4},
pages = {3170-3177},
keywords = {low temperature, high performance, Zn-I2 battery, acetonitrile electrolyte, carbon composite material},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3884-z},
doi = {10.1007/s12274-021-3884-z},
abstract = {Large scale applications of metal-iodine batteries working at sub-zero degree have been challenged by the limited capacity and performance degradation. Herein, we firstly propose a Zn-I2 battery working at low temperature with a carbon composite material/iodine (CCM-I2) cathode, a Zn anode and an environmentally tolerable Zn(ClO4)2-ACN electrolyte. The CCM framework with hierarchical porous structure endows a powerful iodine-anchoring to overcome undesirable dissolution of iodine in organic electrolyte, and the Zn(ClO4)2-ACN electrolyte with low freezing point and high ionic conductivity enhances the low temperature performance. The synergies enable an efficiently reversible conversion of Zn-I2 battery even at −40 °C. Therefore, the resultant Zn-I2 battery delivers a high specific capacity of 200 mAh·g−1, which is fairly approximate to the theoretical capacity of I2 (211 mAh·g−1) and a superior cycling stability with minimal capacity fading of 0.00043% per cycle over 7,000 times under 2C at −20 °C. Furthermore, even at −40 °C, this Zn-I2 battery still exhibits a good capacity retention of 68.7% compared to the capacity at 25 °C and a rapid capacity-recover ability with elevating temperature change. Our results distinctly indicate this Zn-I2 battery can be competent for the practical application under low temperature operation.}
}