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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Top-down fabrication of hierarchical nanocubes on nanosheets composite for high-rate lithium storage
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Top-down fabrication of hierarchical nanocubes on nanosheets composite for high-rate lithium storage

机译：高速锂储存纳米片复合材料上的分层纳米尺寸的自上而下的制造

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摘要

A top-down method was developed to synthesize hierarchical composites consisting of NiCo2O4 nanocubes and graphene nanosheets through the electrostatic interaction of negatively charged graphene oxide nanosheets and positively charged NiCo2O4 spheres. Employed as anode materials for lithium-ion batteries, the hierarchical composites exhibit remarkably high electrochemical performance, including large reversible capacity, superior rate capability, and excellent cycling performance. Large reversible capacities of 1024 and 648 mA h g(-1) are maintained at a current density of 500 and 3000 mA g(-1), respectively, for over 200 cycles. The excellent electrochemical performance of the composite is attributed to the synergistic effect of the hierarchical structure, the well dispersed NiCo2O4 nanocubes and the uniform graphene coating. This work provides an effective and promising strategy for the rational structural design of the metal oxide electrode material.
机译：开发了一种自上而下的方法，以通过带负电荷的石墨烯氧化物纳米片和带正电荷的NiCO2O4球体的静电相互作用合成由NicO 2 O 4纳米孔和石墨烯纳米晶片组成的层级复合材料。 使用作为锂离子电池的阳极材料，等级复合材料表现出显着的高电化学性能，包括较大的可逆容量，优异的速率能力和优异的循环性能。 1024和648MA H（-1）的大可逆容量分别在500和3000mAg（-1）的电流密度上以超过200次循环。 复合材料的优异电化学性能归因于分层结构的协同效应，分散良好分散的NicO 2 O 4纳米烯和均匀的石墨烯涂层。 这项工作为金属氧化物电极材料的合理结构设计提供了有效和有希望的策略。

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    Zhang Jian-Ping; Wu Xue-Yan; Wei Xiao; Xu Shu-Mao; Ma Chao; Shu Mou-Hai; Wang Kai-Xue; Chen Jie-Sheng;

  • 作者单位

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Chem &

    Chem Engn Shanghai 200240 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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