Synthesis of morphology-controlled carbon hollow particles by carbonization of resorcinol-formaldehyde precursor microspheres and applications in lithium-ion batteries

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• 作者：Haijiao Zhang^a ; ^{seaboyfang@163.com} ; Huifang Xu^b ; ^{xuhf@hit.edu.cn} ; Can Zhao^a
• 关键词：Microporous materials ; Chemical synthesis ; Chemical techniques ; Electrochemical properties
• 刊名：Materials Chemistry and Physics
• 出版年：2012
• 期刊代码：58_02540584
• 类别：ms
• 出版时间：15 March, 2012
• 卷：133
• 期：1
• 页码：429-436
• 文件大小：1700 K

摘要

The morphology-controlled carbon hollow particles, derived from resorcinol-formaldehyde (RF) particles, were prepared by using an (oil phase) O/(water phase) W/(oil phase) O inverse-emulsion system which was formed by adding RF precursor (water phase) to n-hexane (oil phase) with Span-80 as surfactant and the following carbonization. This simple method led to the formation of various morphologies of RF carbon precursor particles such as hollow spheres, bowl-like hollow structures, microcapsules, or solid microspheres by adjusting the pH values of the RF precursor. The synthesized carbon particles exhibited porous characters with the surface area of 659 m² g^鈭? and the total pore volume of 0.44 cm³ g^鈭?. Additionally, the electrochemical behavior of the typical RF carbon particles in lithium-ion batteries revealed that the RF carbon microcapsules displayed a high initial discharge capacity of 1059 mAh g^鈭? and stabilized at about 330 mAh g^鈭?, indicating its excellent power property and cycle durability.