MOF-derived carbon coating on self-supported ZnCo2O4–ZnO nanorod arrays as high-performance anode for lithium-ion batteries

• Published in: Journal of materials science Vol. 52; no. 13; pp. 7768 - 7780
• Main Authors: Gan, Qingmeng, Zhao, Kuangmin, Liu, Suqin, He, Zhen
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2017; Springer Nature B.V
• Subjects: Anodes; Arrays; Buffer layers; Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; coatings; Crystallography and Scattering Methods; Diffusion coating; Discharge; electron transfer; Electron transport; Energy Materials; foil; Foils; Ion diffusion; Lithium; lithium batteries; Lithium-ion batteries; Materials Science; Nanorods; Polymer Sciences; Rechargeable batteries; Solid Mechanics; Substrates; Zinc oxide; Solid Electrolyte Interphase; Discharge Capacity; Nanorod Array; Electrochemical Performance; Co3O4
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-017-1043-4

The C–ZnCo 2 O 4 –ZnO nanorod arrays (NRAs), which consist of MOF-derived carbon coating on ZnCo 2 O 4 –ZnO NRAs, are rational designed and synthesized via a facile template-based solution route on Ti foil and used as high-performance anode for lithium-ion batteries (LIBs). The uniform coated MOF-derived carbon layers on the ZnCo 2 O 4 –ZnO nanorods surface can serve as a conductive substrate as well as buffer layer to restrain volume expansion during charge–discharge process. When tested as anodes for LIBs, the C–ZnCo 2 O 4 –ZnO NRAs show high reversible capacity of 1318 mA h g −1 at 0.2 A g −1 after 150 charge–discharge cycles. Furthermore, C–ZnCo 2 O 4 –ZnO NRAs also exhibit brilliant rate performance of 886.2, 812.8, 732.2 and 580.6 mA h g −1 at 0.5, 1, 2 and 5 A g −1 , respectively. The outstanding lithium storage performance of C–ZnCo 2 O 4 –ZnO NRAs could be ascribed to the stimulated kinetics of ion diffusion and electron transport originated from the shortened lithium-ion diffusion pathway and improved electronic conductivity benefit from uniformly coating MOF-derived carbon.