...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Boosting the Potassium Storage Performance of Alloy- Based Anode Materials via Electrolyte Salt Chemistry
【24h】

Boosting the Potassium Storage Performance of Alloy- Based Anode Materials via Electrolyte Salt Chemistry

机译：通过电解质盐化学提高合金基负极材料的钾存储性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Potassium-ion batteries (PIBs) are promising energy storage systems because of the abundance and low cost of potassium. The formidable challenge is to develop suitable electrode materials and electrolytes for accommodating the relatively large size and high activity of potassium. Herein, Bi-based materials are reported as novel anodes for PIBs. Nanostructural design and proper selection of the electrolyte salt have been used to achieve excellent cycling performance. It is found that the potassiation of Bi undergoes a solid-solution reaction, followed by two typical two-phase reactions, corresponding to Bi - Bi(K) and Bi(K) - K5Bi4 - K3Bi, respectively. By choosing potassium bis(fluorosulfonyl)imide (KFSI) to replace potassium hexafluorophosphate (KPF6) in carbonate electrolyte, a more stable solid electrolyte interphase layer is achieved and results in notably enhanced electrochemical performance. More importantly, the KFSI salt is very versatile and can significantly promote the electrochemical performance of other alloy-based anode materials, such as Sn and Sb.
机译：钾离子电池（PIB）由于钾的丰富和低成本而成为有前途的能量存储系统。艰巨的挑战是开发合适的电极材料和电解质，以适应钾的较大尺寸和高活性。在此，Bi基材料被报道为PIB的新型阳极。纳米结构设计和电解质盐的正确选择已用于实现出色的循环性能。发现Bi的钾化经历固溶反应，随后发生两个典型的两相反应，分别对应于Bi-Bi（K）和Bi（K）-K5Bi4-K3Bi。通过选择碳酸双（氟磺酰基）亚胺钾（KFSI）替代碳酸电解质中的六氟磷酸钾（KPF6），可获得更稳定的固体电解质中间层，并显着提高了电化学性能。更重要的是，KFSI盐用途广泛，可以显着提高其他基于合金的负极材料（例如Sn和Sb）的电化学性能。

著录项

  • 来源
    《Advanced energy materials》 |2018年第15期|1703288.1-1703288.10|共10页
  • 作者

    Zhang Qing; Mao Jianfeng; Pang Wei Kong; Zheng Tian; Sencadas Vitor; Chen Yuanzhen; Liu Yajie; Guo Zaiping;

  • 作者单位

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Intelligent Polymer Res Inst, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Sch Mech Mat Mechatron & Biomed Engn, Wollongong, NSW 2500, Australia;

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

    Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    alloy-based anodes; electrolyte salts; potassium-ion batteries; SEI;

    机译：合金基阳极电解质盐钾离子电池SEI;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号