One-Step Catalytic Synthesis of CuO/Cu2O in a Graphitized Porous C Matrix Derived from the Cu-Based Metal–Organic Framework for Li- and Na-Ion Batteries

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....

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Veröffentlicht in:ACS applied materials & interfaces 2016-08, Vol.8 (30), p.19514-19523
Hauptverfasser: Kim, A-Young, Kim, Min Kyu, Cho, Keumnam, Woo, Jae-Young, Lee, Yongho, Han, Sung-Hwan, Byun, Dongjin, Choi, Wonchang, Lee, Joong Kee
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.6b05973