Effect of the Doping Ni and Overdosing Lithium for Synthesis LiMn₂O₄ Cathode Material by the Solid State Reaction Method

Abstract:

The study with Li₂CO₃ and Mn₃O₄ through the solid state reaction makes cathode material for lithium battery spinel - LiMn₂O₄. According to past literature, under the solid-state reaction. The experiment carries out sintering at temperature of 850°C.. Cathode materials under these sintering temperatures are made to fabricate battery. For Ni doped LiMn₂O₄, the capacitance decreasing speed is slow and stable; after 15 times charging-discharging cycles, the attrition rates were 3.05 % or less. The result of experiment demonstrates that the best sintering temperature is at 850°C. Under the condition of 850°C, various contents for extra amount of lithium (1.02 mole-1.1 mole) are fabricated and range of working voltage is released. It is found a further increase of initial capacity to 140.51 mAh/g. LiMn₂O₄ further extends circulation and usage.

• Periodical: Applied Mechanics and Materials (Volumes 457-458)
• Pages: 93-97
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.457-458.93
• Online since: October 2013
• Authors: Yen Chun Liu, Ming Cheng Liu, Robert Lian Huey Liu, Mao Chieh Chi
• Keywords: Sintering, Solid-State Reaction, Spinels

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