期刊
CHEMELECTROCHEM
卷 4, 期 9, 页码 2359-2365出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201700239
关键词
anode; lithium-ion batteries; macroporous materials; mesoporous walls; ZnO nanoparticles
资金
- National Natural Science Foundation of China [21606068, 21406052]
- Natural Science Foundation of Hebei Province of China [B2016202140]
- Scientific Innovation Grant for Excellent Young Scientists of Hebei University of Technology [2015001]
- Program for the Outstanding Young Talents of Hebei Province [BJ2014010]
- Scientific Research Foundation for Selected Overseas Chinese Scholars, Ministry of Human Resources and Social Security of China [CG2015003002]
- Ministry of Education and Science of the Republic of Kazakhstan [0115CK03029, 5156/GF-4, 3756/ GF-4]
A one-step template-based technique for the fabrication of three dimensionally ordered macroporous carbon (3DOMC) was developed. 3DOMC, prepared using silica crystal as a template and soluble resol as a carbon source, possesses ordered macropores with mesoporous walls. ZnO nanoparticles were deposited on as-prepared 3DOMC via a simple in situ growth process to form a ZnO/3DOMC anode material for lithium-ion batteries. In the composite, the ZnO nanoparticles (approximate to 3.9 nm) were well-dispersed on the walls of 3DOMC. The ZnO/3DOMC anode exhibited an enhanced performance in a lithium battery delivering a specific capacity of 673 mAhg(-1) at a current density of 0.1 C (0.1 C= 97.8 mAg(-1)) after 300 cycles. This superior performance was ascribed to the ordered interconnected macropores of 3DOMC which could provide rapid diffusion paths for lithium-ion diffusion and the electrolyte penetration, and buffer the volume changes of the ZnO nanoparticles upon cycling. Furthermore, the mesoporous structure of the 3DOMC walls could enhance the wettability of the ZnO-based electrode, further improving its electrochemical performance.
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