Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 14, Pages 8327-8334Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta00294d
Keywords
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Funding
- National Key Research and Development Program of China [2018YFF0215502]
- Department of Science and Technology of Guangdong [2018A050506005]
- Bureau of Science and Technology of Foshan Municipality [2016AG100522]
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Transition metal oxides have shown extraordinary potential for lithium storage to date. Herein, a peony-like holey Co3O4 architecture has been elaborately designed and successfully prepared via a solvothermal process followed by annealing treatment. The as-obtained peony-like Co3O4 material showed an ultra-large reversible capacity of 1880 mA h g(-1) at 500 mA g(-1) after 800 cycles when it acted as the anode. More importantly, it also afforded a remarkable high-rate capability, i.e., an excellent capacity of 1141 mA h g(-1) at a current density of 10 A g(-1). Such an impressive performance could be ascribed to improved kinetics originating from ultrathin 2D nanosheets with ample pores and a high pseudocapacitive contribution. Therefore, the peony-like Co3O4 material was considered as a promising candidate for high-performance Li-ion battery anodes.
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