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CN107123796A 一种碳包覆磷酸钒猛钠复合材料及其制备方法和在钠离子电池中的应用 无效 - 驳回

  • Patent Title: 一种碳包覆磷酸钒猛钠复合材料及其制备方法和在钠离子电池中的应用
  • Patent Title (English): Carbon-coated sodium manganese and vanadium phosphate composite material and preparation method thereof as well as application of carbon-coated sodium vanadium and manganese phosphate composite material in sodium-ion battery
  • Application No.: CN201710330057.1
    Application Date: 2017-05-11
  • Publication No.: CN107123796A
    Publication Date: 2017-09-01
  • Inventor: 张治安 , 陈晓彬 , 赖延清 , 肖志伟 , 李煌旭 , 尚国志
  • Applicant: 中南大学
  • Applicant Address: 湖南省长沙市岳麓区麓山南路932号
  • Assignee: 中南大学
  • Current Assignee: 中南大学
  • Current Assignee Address: 湖南省长沙市岳麓区麓山南路932号
  • Agency: 长沙市融智专利事务所
  • Agent 张伟; 魏娟
  • Main IPC: H01M4/36
  • IPC: H01M4/36 ;  H01M4/58 ;  H01M4/62 ;  H01M10/054
一种碳包覆磷酸钒猛钠复合材料及其制备方法和在钠离子电池中的应用
Abstract:
本发明公开了一种Na4MnV(PO4)3/C复合材料及其制备方法和在钠离子电池中的应用，Na4MnV(PO4)3/C复合材料由碳包覆Na4MnV(PO4)3颗粒构成；其合成方法是利用有机物充当还原剂及碳源，采用廉价的钠源、锰源和钒源，通过一步固相法，合成碳包覆Na4MnV(PO4)3复合正极材料，该制备方法简单易行，条件温和，产率高，制备的复合材料作为钠离子电池正极材料应用时，表现出高比容量、高工作电压、良好的循环稳定性能以及优异的倍率性能。
Abstract(English):

The invention discloses a Na4MnV(PO4)3/C composite material and a preparation method thereof as well as application of the Na4MnV(PO4)3/C composite material in a sodium-ion battery. The Na4MnV(PO4)3/C composite material is prepared from Na4MnV(PO4)3/C particles. A synthetic method of the Na4MnV(PO4)3/C composite material is characterized in that an organic matter is used as a reducing agent and a carbon source; low-price sodium source, manganese source and vanadium source are adopted to synthesize a carbon-coated Na4MnV(PO4)3 composite cathode material by a one-step solid-phase method. The preparation method has the advantages of simplicity, feasibility, mild conditions and high yield; when the prepared composite material is applied as a cathode material of the sodium-ion battery, the composite material shows high specific capacity, high working voltage, good cyclic stability and excellent rate capability.

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