High-performance aluminum-ion batteries based on AlCl3/caprolactam electrolytes

Cheng Xu, Wenyang Zhang, Pan Li, Shimeng Zhao, Yiqun Du, Huixin Jin, Youjian Zhang, Zihan Wang, Jianxin Zhang*


研究成果: Article査読

18 被引用数 (Scopus)


Aluminum-ion batteries (AIBs) have become a promising energy storage system due to their excellent cycling performance and safety properties. However, many problems persist in the electrolyte system as well as high cost and harsh working environments. In this study, we prepared two novel electrolytes, namely, AlCl3/caprolactam (CPL) and AlCl3/urea/CPL for use in AIBs. The AlCl3/CPL electrolyte exhibited a specific capacity of 136 mA h g-1 at a current density of 5 A g-1. The performance of AIBs was improved when an appropriate amount of urea was added. The AlCl3/urea/CPL electrolyte achieved a high initial specific capacity of 151 mA h g-1 at 5 A g-1 and reached 132 mA h g-1 with a high coulombic efficiency of ∼98% after 3000 cycles. The CPL electrolyte improved the cutoff voltage and initial discharge voltage of AIBs, and the capacity of AIBs was significantly improved when compared with that of the reported electrolyte. This work provides innovative insights into AIBs, and CPL will be a promising electrolyte for AIBs.

ジャーナルSustainable Energy and Fuels
出版ステータスPublished - 2019

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • エネルギー工学および電力技術


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