Advanced rechargeable aluminium ion battery with a high-quality natural graphite cathode

Di Yan Wang, Chuan Yu Wei, Meng Chang Lin, Chun Jern Pan, Hung Lung Chou, Hsin An Chen, Ming Gong, Yingpeng Wu, Chunze Yuan, Michael Angell, Yu Ju Hsieh, Yu Hsun Chen, Cheng Yen Wen, Chun Wei Chen, Bing Joe Hwang, Chia Chun Chen, Hongjie Dai

研究成果: 雜誌貢獻文章

202 引文 斯高帕斯(Scopus)

摘要

Recently, interest in aluminium ion batteries with aluminium anodes, graphite cathodes and ionic liquid electrolytes has increased; however, much remains to be done to increase the cathode capacity and to understand details of the anion-graphite intercalation mechanism. Here, an aluminium ion battery cell made using pristine natural graphite flakes achieves a specific capacity of ∼110 mAh g-1 with Coulombic efficiency ∼1/498%, at a current density of 99 mA g-1 (0.9 C) with clear discharge voltage plateaus (2.25-2.0 V and 1.9-1.5 V). The cell has a capacity of 60 mAh g-1 at 6 C, over 6,000 cycles with Coulombic efficiency ∼ 99%. Raman spectroscopy shows two different intercalation processes involving chloroaluminate anions at the two discharging plateaus, while C-Cl bonding on the surface, or edges of natural graphite, is found using X-ray absorption spectroscopy. Finally, theoretical calculations are employed to investigate the intercalation behaviour of choloraluminate anions in the graphite electrode.

原文英語
文章編號14283
期刊Nature Communications
8
DOIs
出版狀態已發佈 - 2017 二月 13

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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    Wang, D. Y., Wei, C. Y., Lin, M. C., Pan, C. J., Chou, H. L., Chen, H. A., Gong, M., Wu, Y., Yuan, C., Angell, M., Hsieh, Y. J., Chen, Y. H., Wen, C. Y., Chen, C. W., Hwang, B. J., Chen, C. C., & Dai, H. (2017). Advanced rechargeable aluminium ion battery with a high-quality natural graphite cathode. Nature Communications, 8, [14283]. https://doi.org/10.1038/ncomms14283