应用化学 ›› 2018, Vol. 35 ›› Issue (3): 366-368.DOI: 10.11944/j.issn.1000-0518.2018.03.170425

• 研究简报 • 上一篇    

二维层状氮化二钙作为钠离子电池负极材料

陈光海a,白莹a,吴锋ab,吴川ab*()   

  1. a北京理工大学材料学院,环境科学与工程实验室,北京重点实验室 北京 100081
    b北京市电动汽车协同创新中心 北京 100081
  • 收稿日期:2017-11-27 接受日期:2017-12-27 出版日期:2018-03-05 发布日期:2018-02-12
  • 通讯作者: 吴川
  • 基金资助:
    国家973计划(2015CB251100)资助项目

Two-Dimensional Layered Dicalcium Nitride as Anode Material for Sodium Ion Batteries

CHEN Guanghaia,BAI Yinga,WU Fengab,WU Chuanab*()   

  1. aBeijing Key Laboratory of Environmental Science and Engineering,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China
    b Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,China
  • Received:2017-11-27 Accepted:2017-12-27 Published:2018-03-05 Online:2018-02-12
  • Contact: WU Chuan
  • Supported by:
    Supported by the National Basic Research Program of China(973 project, No.2015CB251100)

摘要:

以Ca3N2为前驱体,用高温热解法制备了2D层状结构Ca2N 并用X射线和扫描电镜对Ca2N的组成、结构和形貌进行了表征。 作为钠离子电池新型负极材料,在50 mA/g电流密度充放电,首次放电比容量可达584 mA·h/g,可逆比容量达180 mA·h/g。在2000 mA/g大电流密度下,仍有70 mA·h/g。

关键词: 氮化二钙, 二维层状结构, 钠离子电池, 负极材料

Abstract:

Two-dimensional layered Ca2N was synthesized via a pyrolysis method with Ca3N2 precursor. The component, structure and morphology of Ca2N were characterized by X-ray diffraction and scanning electron microscope. As a novel anode material of sodium ion batteries, the initial discharge capacity is up to 584 mA·h/g and the reversible capacity is about 180 mA·h/g at a current density of 50 mA/g. Even at a high current density of 2000 mA/g, a capacity of 70 mA·h/g can be retained.

Key words: dicalcium nitride, two-dimensional layered structure, sodium ion batteries, anode material