High-performance symmetric sodium-ion batteries using a new, bipolar O3-type material, Na0.8Ni0.4Ti0.6O2

Shaohua Guo, Haijun Yu, Pan Liu, Yang Ren, Tao Zhang, Mingwei Chen, Masayoshi Ishida, Haoshen Zhou

    研究成果: Article査読

    189 被引用数 (Scopus)

    抄録

    Based on low-cost and rich resources, sodium-ion batteries have been regarded as a promising candidate for next-generation energy storage batteries in the large-scale energy applications of renewable energy and smart grids. However, there are some critical drawbacks limiting its application, such as safety and stability problems. In this work, a stable symmetric sodium-ion battery based on the bipolar, active O3-type material, Na0.8Ni0.4Ti0.6O2, is developed. This bipolar material shows a typical O3-type layered structure, containing two electrochemically active transition metals with redox couples of Ni4+/Ni2+ and Ti4+/Ti3+, respectively. This Na0.8Ni0.4Ti0.6O2-based symmetric cell exhibits a high average voltage of 2.8 V, a reversible discharge capacity of 85 mA h g-1, 75% capacity retention after 150 cycles and good rate capability. This full symmetric cell will greatly contribute to the development of room-temperature sodium-ion batteries with a view towards safety, low cost and long life, and it will stimulate further research on symmetric cells using the same active materials as both cathode and anode.

    本文言語English
    ページ(範囲)1237-1244
    ページ数8
    ジャーナルEnergy and Environmental Science
    8
    4
    DOI
    出版ステータスPublished - 2015 4月 1

    ASJC Scopus subject areas

    • 環境化学
    • 再生可能エネルギー、持続可能性、環境
    • 原子力エネルギーおよび原子力工学
    • 汚染

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