A High Capacity Aluminum-Ion Battery Based on Imidazole Hydrochloride Electrolyte

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Aluminum-ion batteries (Al-ion batteries) have become a potential energy storage system, owing to their excellent cycling performance, three-electron-redox properties, and safety performance. Until now, great progress has been made in Al-ion batteries. However, the Al-ion battery system still encounters various problems, such as high electrolyte price, harsh working environment, low discharge platforms, and inferior capacity. Here, we prepared a novel Al-ion battery with AlCl3/Imidazole hydrochloride (ImidazoleHCl) as the electrolyte, aluminum as the negative electrode, and commercial graphite as the positive electrode. The battery achieves a high specific discharge capacity of 129 mA h g−1 at a current density of 0.5 A g−1 and 105 mA h g−1 with a high coulombic efficiency of 99 % at the current density of 4 A g−1 after 1000 cycles. The mechanism of AlCl4 intercalation/de-intercalation is proved by Raman, XRD and EDS studies. ImidazoleHCl is a promising electrolyte and this work provides a new insight for the Al-ion battery system.

Original languageEnglish
Pages (from-to)3350-3354
Number of pages5
JournalChemElectroChem
Volume6
Issue number13
DOIs
Publication statusPublished - 2019 Jul 1
Externally publishedYes

Keywords

  • aluminum ion batteries
  • graphite
  • Imidazole hydrochloride
  • ionic liquid electrolyte
  • specific capacity

ASJC Scopus subject areas

  • Catalysis
  • Electrochemistry

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