Synthesis of MOF-74-derived carbon/ZnCo2O4 nanoparticles@CNT-nest hybrid material and its application in lithium ion batteries

• Published in: Journal of applied electrochemistry Vol. 49; no. 11; pp. 1103 - 1112
• Main Authors: Wang, Yingying, Zhu, Xinxin, Liu, Dan, Tang, Haolin, Luo, Guangrong, Tu, Keke, Xie, ZhiZhong, Lei, Jiaheng, Li, Junsheng, Li, Xi, Qu, Deyu
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.11.2019; Springer Nature B.V
• Subjects: Batteries; Carbon; Carbon nanotubes; Chemistry; Chemistry and Materials Science; Diffusion rate; Electrochemistry; Flux density; Industrial Chemistry/Chemical Engineering; Lithium; Lithium-ion batteries; Metal oxides; Metal-organic frameworks; Nanoparticles; Physical Chemistry; Rechargeable batteries; Research Article; Resistance; Synthesis; Transition metal oxides; Transition metals; Carbon nanotube; LIBs anode; hybrid; MOF; Carbon/ZnCo; O
• ISSN: 0021-891X; 1572-8838
• DOI: 10.1007/s10800-019-01349-4

Carbon/ZnCo 2 O 4 nanoparticles’ hybrid highly dispersed within a carbon nanotube nest were synthesized by the carbonization of in situ formed MOF-74-ZnCo/CNT hybrid materials. Results demonstrated that the synthesized mixed transition metal oxides/carbon/CNT composite provided a stable energy density of 800 mAh g −1 at 100 mA g −1 . It could also provide a reversible capacity of 430 mAh g −1 under a high current of 2000 mA g −1 even after 1000 cycles. The outstanding performances of C/ZnCo 2 O 4 @CNT can be accredited to the synergistic effects from the porous nanostructured bi-metal oxides, the carbon and the CNT nest. These properties can improve the conductance of the material, alleviate the stress on ZnCo 2 O 4 nanoparticles through accommodating the volume variation during lithium exchange processes, and offer fast diffusion roads for ions and more active sites for lithium storage. Graphic Abstract