Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 30, Pages 19514-19523Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b05973
Keywords
one-step catalytic graphitization process; metal-organic framework; copper oxide; Li-ion secondary battery; graphitized porous C; Na-ion secondary battery
Funding
- National Research Foundation under the Ministry of Science, ICT Future, Korea [NRF-2012M1A2A2671792]
- KIST institutional program [2E26291]
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The hybrid composite electrode comprising CuO and Cu2O micronanoparticles in a highly graphitized porous C matrix (CuO/Cu2O-GPC) has a rational design and is a favorable approach to increasing the rate capability and reversible capacity of metal oxide negative materials for Li- and Na-ion, batteries. CuO/Cu2O-GPC is synthesized through a Cu-based metal organic framework via a one-step thermal transformation process. The electrochemical performances of the CuO/Cu2O-GPC negative electrode in Li- and Na-ion batteries are systematically studied and exhibit excellent capacities of 887.3 mAh g(-1) at 60 mA g(-1) after 200 cycles in a Li-ion battery and 302.9 mAh g(-1) at 50 mA g(-1) after 200 cycles in a Na-ion battery. The high electrochemical stability was obtained via the rational strategy, mainly owing to the synergy effect of the CuO and Cu2O micronanoparticles and highly graphitized porous C formed by catalytic graphitization of Cu nanoparticles. Owing to the simple one-step thermal transformation process and resulting high electrochemical performance, CuO/Cu2O-GPC is one of the prospective negative active materials for rechargeable Li- and Na-ion batteries.
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