METHOD OF MANUFACTURING POROUS NEGATIVE ELECTRODE MATERIAL, NEGATIVE ELECTRODE MANUFACTURED BY THE METHOD, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME
- 申请公布号:
- KR20130087969(A)
- 申请号:
- KR20120009266
- 申请日期:
- 2012.01.30
- 申请公布日期:
- 2013.08.07
- 申请人:
- SAMSUNG SDI CO., LTD.
- 发明人:
- CHA, JUN KYU;SEO, NA RI;KIM, MYOUNG SUN;KIM, YOUNG SU;KIM, KI JUN
- 分类号:
- H01M4/139;H01M4/13;H01M4/62;H01M10/052
- 主分类号:
- H01M4/139
- 摘要:
- PURPOSE: A manufacturing method of porous anode material is provided to easily control pore size and distribution in the porous anode material by controlling the size and content of polymer ball. CONSTITUTION: A manufacturing method of porous anode material comprises: a step of manufacturing a first particle by pulverizing Si or Sn group anode material; a step of mixing the Si or Sn group anode material with polymer ball and coupling agent, drying, and bulking; a step of pulverizing the bulked Si or Sn group anode material into a fixed size; and a step of manufacturing a second particle of the porous Si or Sn group anode material by removing the polymer ball with high temperature heating and sintering the coupling agent. [Reference numerals] (AA) Si or Sn based cathode active material; (BB) Polymer ball; (CC) Porous secondary particle
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