期刊
ACS APPLIED NANO MATERIALS
卷 -, 期 -, 页码 -出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c02089
关键词
NiCo2O4; transition metal oxide; hollow multishelled structures (HoMSs); electrochemical performance; anode; lithium-ion battery
资金
- National Natural Science Foundation of China [52174387]
- Education Department of Henan Province [20A430024]
- China Postdoctoral Science Foundation [2021M701096]
By utilizing carbonaceous microspheres as a template, the synthesis of carbon nanomultishells can lead to higher energy density lithium-ion batteries and improved cycle stability.
Lithium-ion batteries (LIBs) have fallen short of expectation in terms of energy density compared to conventional lithium-ion batteries, and the theoretical energy density of the anode material plays a crucial role. Materials with high equilibrium effective specific surface area and mass transport could be promising to solve the dilemma. Herein, we develop a tactic to synthesize carbonaceous microspheres (CMSs, 13 mu m) utilizing cobalt acetate tetrahydrate as the catalyst. Six-shelled NiCo2O4 hollow multishelled structures (6S-NiCo2O4-HoMSs) have been realized for the first time based on the alkali-treated CMS (ATCMS) template with nanoporous structures. Precisely, low-dimensional nanostructures enable more electroactive sites, smaller local current density, and shorter diffusion paths for both multishelled structure serves to buffer the volume expansion, reduce the stress and strain to permit more uniform lithium deposition, and improve the cycle stability of the battery.
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