文献类型：期刊文献

英文题名：Tailoring of an ultralow temperature adaptive cellulose nanofiber-based flexible zinc-air battery with long cycle life

作者：Xue, Yichun[1,2];Zhou, Hang[1,2];Wang, Keyu[3];Zhu, Hongxiang[1,2];Zhuang, Linzhou[3];Xu, Zhi[3];He, Hui[1,2]

机构：[1]Guangxi Univ, Sch Light Ind & Food Engn, Nanning 530004, Peoples R China;[2]Guangxi Key Lab Clean Pulp & Papermaking & Pollut, Nanning 530004, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：10

期号：42

起止页码：22730

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20224513094067);WOS:【SCI-EXPANDED(收录号:WOS:000869126200001)】；

基金：The acknowledgements come at the end of an article a.er the conclusions and before the notes and references. This work was supported by the National Natural Science Foundation of China (22168008), the Guangxi Natural Science Foundation (2021JJA120040), the National Natural Science Foundation of China (31860193), Guangxi Ba-Gui Scholars Program (2019A33), Technology Development Project of Guangxi Bossco Environmental Protection Technology Co., Ltd (202100039), Guangxi Innovation-driven Development Special Fund Project (AA18118024-1).

语种：英文

外文关键词：Anodes - Binary alloys - Charging (batteries) - Cobalt alloys - Electrolytes - Energy efficiency - Hydrogels - Iron alloys - Nanocellulose - Nanofibers - Nanowires - Secondary batteries - Temperature

摘要：Flexible zinc-air batteries are competitive energy storage equipment for wearable electronic devices, but the generation of zinc dendrites reduces their cycle life, and the formation of ice crystals limits their application at ultralow temperatures. Herein, a novel low-temperature adaptive cellulose nanofiber (CNF)-based sandwich-structured flexible zinc-air battery (CNF-FZAB-PF) was well constructed using a CNF-based flexible hydrogel electrolyte containing lithium chloride, an air cathode with a FeCo nanosheet catalyst and carbon cloth, and a zinc anode. The rigid-flexible cocrosslinked double network skeleton supported by CNF and lithium chloride of CNF-FZAB-PF endowed it with excellent mechanical properties and an energy efficiency of 58%. Interestingly, zinc dendrites on the zinc anode and ice crystals at low temperatures were effectively inhibited by enhancing the interface ionic conduction between the zinc anode and hydrogel electrolyte with lithium chloride. Thus, CNF-FZAB-PF exhibited a stable open circuit voltage of 1.49 V, a specific capacity of 663 mA h g(-1), an energy density of 981.24 W h kg(-1), a long cycle time of 80 h, and operational stability under room and ultralow temperatures (-60 degrees C).