Synthesis of LiNi_(0.8)Co_(0.2)O_2 in Air Atmosphere and its Characterization

著录项

• 来源
  《哈尔滨工业大学学报：英文版》 |2004年第2期|181-183|共3页
• 作者

  顾大明; 史鹏飞; 顾健;

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• 作者单位

  School of Science;

  Harbin Institute of Technology;

  Harbin 150090;

  China;

  School of Science;

  Harbin Institute of Technology;

  Harbin 150090;

  Chinahe commercialized lithium secondary cells need the electrode materials with high speeific capacity;

  lower pollution and lower price. Certain industrial materials ( NiSO_4;

  CoSO_4;

  LiOH.H_2O)were used to synthesize Ni_(0.8)Co_(0.2)(OH)_2 of a stratified structure;

  when various synthesis conditions such as pH;

  reaction temperature et al. were controlled strictly. After LiOH.H_2O and Ni_(0.8)Co_(0.2) (OH)_2were calcinated in air atmosphere;

  LiNi_(0.8)Co_(0.2)O_2 positive electrode materials with good layered crystal structure was obtained. Tests showed that the optimal calcination temperature in air atmosphere was about at 720℃and LiNi_(0.8)Co_(0.2)O_2 synthesized in the above conditions had good electrochemical properties and a low cost. The first specific: discharge capacity of the material was 186 mAh/g;

  and the specific discharge capacity was 175 mAh/g after 50 cycles at a 0.2C rate;

  between 3.0~4.2 V with a discharge deterioration ratio of 0.22% each cycle. Tests showed that LiNi_(0.8)Co_(0.2)O_2 positive electrode materials was a promising candidate to replace the commereialized LiCoO_2 for lithium secondary batteries.;

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• 原文格式 PDF
• 正文语种 chi
• 中图分类 化学电源、电池、燃料电池;
• 关键词

  锂二次电池; LiNio.8Co.2O2; 特有容量; 电极材料; 层状晶体结构;

  机译：锂二次电池;LiNi0。 8Co0。 2O2;比容;