The structure dependent electrochemical performance of porous Co₃O₄ nanoplates as anode materials for lithium-ion batteries

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• 作者：Congcong Liang ; Danfei Cheng ; Shujiang Ding ; Pengfei Zhao ; Mingshu Zhao ; Xiaoping Song ; Fei Wang
• 关键词：Cobalt oxide ; Nanoplate ; Porous ; Anode ; Lithium-ion battery
• 刊名：Journal of Power Sources
• 出版年：1 April, 2014
• 年：2014
• 卷：251
• 期：Complete
• 页码：351-356
• 全文大小：1822 K

文摘

The hexagon single-crystal Co(OH)₂ nanoplates, which obtained by hydrothermal synthesis method, can be transformed to the porous single-crystal Co₃O₄ nanoplates after the heat treatment above 300聽掳C in air. Electrochemical tests show that the lithium storage performances of porous Co₃O₄ nanoplates are influenced more closely to its structural aspects than its morphology and size factors, which can be controlled by changing the heat treatment temperature. When the heat treatment temperature is increased to 500聽掳C, the robust single-crystal Co₃O₄ nanoplates with relatively large mesoporous size and low specific surface area can be obtained via the long-range atom diffusion at high temperature, which exhibit low initial irreversible capacity, superior cycling performance and excellent rate capability.