石油化工高等学校学报 ›› 2024, Vol. 37 ›› Issue (6): 44-51.DOI: 10.12422/j.issn.1006-396X.2024.06.005

• 研究与开发 • 上一篇    下一篇

磷酸钒钠正极材料的Zr4+掺杂改性研究

吕士忠1(), 李天龙1, 房睿2, 卢宝光3, 郑成志3, 赵磊1, 邓亮1(), 王振波1()   

  1. 1.哈尔滨工业大学 化工与化学学院,黑龙江 哈尔滨 150001
    2.哈尔滨工业大学 水资源国家工程研究中心有限公司,黑龙江 哈尔滨 150090
    3.广东粤海水务投资有限公司,广东 深圳 518021
  • 收稿日期:2024-09-29 修回日期:2024-10-28 出版日期:2024-12-25 发布日期:2024-12-24
  • 通讯作者: 邓亮,王振波
  • 作者简介:吕士忠(2001-),男,硕士研究生,从事化学电源方面的研究;E-mail:lvshizhong12@163.com
  • 基金资助:
    中国博士后科学基金项目(2024M754198);国家资助博士后研究人员计划项目(GZC20233448);黑龙江省博士后面上资助项目(LBH-Z23137)

Modification of Sodium Vanadate Cathode by Zr4+ Doping

Shizhong LÜ1(), Tianlong LI1, Rui FANG2, Baoguang LU3, Chengzhi ZHENG3, Lei ZHAO1, Liang DENG1(), Zhenbo WANG1()   

  1. 1.School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin Heilongjiang 150001,China
    2.National Engineering Research Center of Urban Water Resources Co. ,Ltd. ,Harbin Institute of Technology,Harbin Heilongjiang 150090,China
    3.Guangdong Yuehai Water Investment Co. ,Ltd. ,Shenzhen Guangdong 518021,China
  • Received:2024-09-29 Revised:2024-10-28 Published:2024-12-25 Online:2024-12-24
  • Contact: Liang DENG, Zhenbo WANG

摘要:

采用喷雾干燥法制备了Zr4+掺杂的空心球状磷酸钒钠(Na3V2(PO43)正极材料,探讨了Zr4+掺杂量(n(Zr4+)/n(Na3-x V2-x Zr x (PO43))对材料性能的影响;通过X射线衍射(XRD)、扫描电子显微镜(SEM)及原位XRD等手段分析了Zr4+掺杂对材料结构及电化学性能的影响。结果表明,Zr4+掺杂增强了材料的结构稳定性,有效抑制了循环过程中的结构坍塌和体积膨胀;当Zr4+掺杂量为0.15时,Na2.85V1.85Zr0.15(PO43在15.0 C倍率下的放电比容量为76.5 mA·h/g,在10.0 C倍率下经过800次循环后容量保持率高达80.6%。

关键词: 钠离子电池, 磷酸钒钠, 电化学性能, Zr4+掺杂量, 喷雾干燥

Abstract:

Zr4+-doped hollow spherical Na3V2(PO43 cathode material was prepared by spray drying method, and the influence of different Zr4+ doping levels (molar ratio of Zr4+ to Na3-x V2-x Zr x (PO43) on the material properties was investigated. Techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and in-situ XRD were used to analyze the effects of Zr4+ doping on the structure and electrochemical performance of the material. It can be observed that Zr4+ doping enhanced the structural stability of the material, effectively inhibiting structural collapse and volume expansion during cycling. When the Zr4+ doping level was 0.15, Na2.85V1.85Zr0.15(PO43 (NVZP-15) demonstrated a discharge specific capacity of 76.5 mA?h/g at 15.0 C, with a capacity retention of 80.6% after 800 cycles at 10.0 C.

Key words: Sodium ion batteries, Na3V2(PO43, Electrochemical properties, Zr4+ doping amount, Spray drying

中图分类号: 

引用本文

吕士忠, 李天龙, 房睿, 卢宝光, 郑成志, 赵磊, 邓亮, 王振波. 磷酸钒钠正极材料的Zr4+掺杂改性研究[J]. 石油化工高等学校学报, 2024, 37(6): 44-51.

Shizhong LÜ, Tianlong LI, Rui FANG, Baoguang LU, Chengzhi ZHENG, Lei ZHAO, Liang DENG, Zhenbo WANG. Modification of Sodium Vanadate Cathode by Zr4+ Doping[J]. Journal of Petrochemical Universities, 2024, 37(6): 44-51.

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