Novel approach for a high-energy-density Li–air battery: tri-dimensional growth of Li2O2 crystals tailored by electrolyte Li+ ion concentrations

Yang Liu; Liumin Suo; Huan Lin; Wenchao Yang; Yanqun Fang; Xianjun Liu; Deyu Wang; Yong-Sheng Hu; Weiqiang Han; Liquan Chen

doi:10.1039/C4TA00834K

Novel approach for a high-energy-density Li–air battery: tri-dimensional growth of Li₂O₂ crystals tailored by electrolyte Li⁺ ion concentrations†

Yang Liu,^a Liumin Suo,^b Huan Lin,^a Wenchao Yang,^a Yanqun Fang,^a Xianjun Liu,^a Deyu Wang,*^a Yong-Sheng Hu,*^b Weiqiang Han^a and Liquan Chen^b

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* Corresponding authors

^a Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, 509 Zhuangshi Road, Zhenhai, Ningbo 315201, China
E-mail: wangdy@nimte.ac.cn

^b National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
E-mail: yshu@aphy.iphy.ac.cn

Abstract

A novel strategy to improve the utilizing ratio of electrode volume via adjusting the electrolyte Li⁺ ion concentration is proposed. The variance of storage amount, namely discharge capacity, is up to ∼600% greater within the investigated region of 10⁻³ M to 5 M. This approach provides a novel thought to further improve the energy density of practical devices.

Journal of Materials Chemistry A

Novel approach for a high-energy-density Li–air battery: tri-dimensional growth of Li₂O₂ crystals tailored by electrolyte Li⁺ ion concentrations†

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Novel approach for a high-energy-density Li–air battery: tri-dimensional growth of Li₂O₂ crystals tailored by electrolyte Li⁺ ion concentrations

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Journal of Materials Chemistry A