The use of cobalt hydroxychloride [Co2(OH)3Cl] as an anode material for lithium ion batteries (LIBs) is investigated using spherical shape and ultrafine nanocrystals directly formed by spray pyrolysis from spray solution of cobalt chloride salt. Dot-mapping images of the resulting powders reveal a uniform distribution of Co, O, and Cl throughout the powder. The Co2(OH)3Cl powder prepared directly by spray pyrolysis exhibits a high thermal stability at temperatures below 220°C, as well as having superior electrochemical properties compared with those of the CoCl2(H2O)2 and CoO powders prepared by the same process. The initial discharge capacities of the Co2(OH)3Cl and CoO powders at a constant current density of 1000 mA g−1 are found to be 1570 and 1142 mA h g−1, respectively, and their initial Coulombic efficiencies are 72 and 70%. The discharge capacities of the Co2(OH)3Cl and CoO powders after 100 cycles are 955 and 632 mA h g−1, respectively. The Co2(OH)3Cl powders have a high discharge capacity of 609 mA h g−1 even after 1000 cycles at a high current density of 5000 mA g−1.
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机译：使用球形氯化物和由氯化钴盐的喷雾溶液通过喷雾热解直接形成的超细纳米晶体，研究了将羟基氯化钴[Co2（OH）3Cl]用作锂离子电池（LIBs）的负极材料。所得粉末的点图图像显示了整个粉末中Co，O和Cl的均匀分布。与通过相同方法制得的CoCl2（H2O）2和CoO粉末相比，直接通过喷雾热解制备的Co2（OH）3Cl粉末在220°C以下的温度下显示出高的热稳定性，并且具有优异的电化学性能。在恒定电流密度为1000 mA g -1 的条件下，Co2（OH）3Cl和CoO粉末的初始放电容量为1570和1142 mA hg -1 ，其初始库仑效率为72％和70％。 100次循环后，Co2（OH）3Cl和CoO粉末的放电容量分别为955和632 mA h g -1 。即使经过1000次循环，在50002mA g -1 的高电流密度下，Co2（OH）3Cl粉末仍具有609 mA h g -1 的高放电容量。
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