Spherical nanoporous LiCoPO4/C composites as high performance cathode materials for rechargeable lithium-ion batteries
Spherical nanoporous LiCoPO4/C composites as high performance cathode materials for rechargeable lithium-ion batteries
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DOI：
10.1039/c1jm10793c
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发表时间：
2011-01-01
影响因子：
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通讯作者：
Richardson, Thomas J.
中科院分区：
文献类型：
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作者：
Liu, Jun;Conry, Thomas E.;Richardson, Thomas J.
以可溶性前驱体为原料，采用喷雾热分解法合成了球形纳米多孔LiCoPO 4/C复合微粒。它们由聚集成平均孔径为68 nm的微米级球体的类似于70 nm的初级颗粒和包含2.4重量%碳的3-5 nm厚的保形碳涂层组成。该材料在C/10倍率下的可逆容量为123 mAh g（-1），并显示出优异的循环行为和倍率性能。良好的电化学性能是由于电子和离子传输的三维网络的存在。
Spherical nanoporous LiCoPO4/C composite microparticles were synthesized from soluble precursors by spray pyrolysis. They consisted of similar to 70 nm primary particles agglomerated into micron-sized spheres with an average pore size of 68 nm and a 3-5 nm thick conformal carbon coating comprising 2.4% carbon by weight. The material delivered a reversible capacity of 123 mAh g(-1) at C/10 rate, and showed excellent cycling behavior and rate capability. The good electrochemical performance is due to the presence of three-dimensional networks for both electronic and ionic transport.