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Urchin-like Co3O4 Nanostructure and Their Electrochemical Behavior in Rechargeable Lithium Ion Battery
Hui Li1, Guang Tao Fei*1, Ping Cui1, Yi Jin2, Xu-yong Feng3, Chun-hua Chen3
1.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;2.Nanjing Lithing Energy Technology Corporation Limited, Nanjing 211135, China;3.Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
Abstract:
3D urchin-like Co3O4 have been successfully prepared by calcination of the urchin-like pre-cursors, which were synthesized through a facile hydrothermal route. The morphology and structure of the 3D urchin-like Co3O4 have been characterized by field emission scanning electron microscopy, transmission electron microscopy, high resolution transmission elec-tron microscopy, and X-ray powder diffraction. The as-synthesized Co3O4 products are of urchin-like structures with approximated 5-7 μm in diameter, and are composed of numer-ous nanoparticles chains with the particles diameter of about 15 nm. This kind of urchin-like Co3O4 exhibits superior energy storage properties with the high capacity of 1.369 Ah/g and its good cyclic stability shows great potential in the rechargeable Li-ion battery.
Key words:  Co3O4, Urchin-like structure, Hydrothermal, Lithium ion battery, Discharge capacity
FundProject:
附件
三维海胆状Co3O4的微纳结构制备及锂电池性能
李惠1, 费广涛*1, 崔平1, 金翼2, 冯旭勇3, 陈春华3
1.中国科学院合肥物质科学研究院,固体物理研究所材料物理重点实验室,安徽纳米材料与技术重点实验室,合肥230031;2.南京Lithing能源技术有限公司,南京211135;3.中国科学技术大学材料与科学工程系,中国科学院材料能源转换重点实验室,合肥230026
摘要:
水热法制备的合成海胆状Co3O4前驱物在空气中退火得到三维海胆状Co3O4的微纳结构. 采用FESEM、TEM、HRTEM以及XRD对产物进行形貌和结构的表征. 结果表明,合成的海胆状结构Co3O4由许多粒径约为15 nm的颗粒串接形成. 锂电池测试性能表明,制备的海胆状Co3O4首次放电容量达到1.369 Ah/g,经过20次循环
关键词:  Co3O4,海胆状结构,水热,锂电池,放电容量
DOI:10.1088/1674-0068/24/03/343-347
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