A reliable gel polymer electrolyte enables stable cycling of rechargeable aluminum batteries in a wide-temperature range

Zhidong Liu, Huiping Du, Yanyan Cui, Li Du, Zhiming Zhao, Xiaohang Wang, Zichuan Lv, Mengjia Sun, Zhiyuan Liu, Kaiming Li, Guoxin Zhang, Meng Chang Lin, Guanglei Cui

研究成果: 雜誌貢獻文章同行評審

6 引文 斯高帕斯(Scopus)

摘要

Rechargeable aluminum batteries are regarded as one of the most promising candidates for post-lithium energy storage systems due to the low cost and high capacity of aluminum metal. However, the current ionic liquid electrolyte of rechargeable aluminum batteries are facing several critical issues including moisture sensitivity, electrolyte leakage and corrosivity, which would substantially undermine Coulombic efficiency and cycling stability. Herein, a polyamide (PA, nylon)-based gel polymer electrolyte in which the ionic liquid is trapped into the polyamide matrix is prepared through a facile process. The strongly hydrogen-bonded PA macromolecular chains are first unwound in the acidic ionic liquid under the conditions of stirring and heating and then reorganize into an association-linked configuration when cooling. This PA-based gel polymer electrolyte (PAGPE) demonstrates improvements of moisture sensitivity, electrolyte leakage and corrosivity compared to the ionic liquid electrolyte. The assembled Al/graphite battery with PAGPE electrolytes works well in a wide temperature range from −30 °C to 45 °C. This work provides a promising strategy for promoting the developments of rechargeable aluminum batteries.
原文英語
文章編號229839
期刊Journal of Power Sources
497
DOIs
出版狀態已發佈 - 6月 15 2021
對外發佈

ASJC Scopus subject areas

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 物理與理論化學
  • 電氣與電子工程

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