中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Hollow cobalt selenide nanospheres wrapped with reduced graphene oxide nanosheets as electrodes for hybrid supercapacitor

文献类型:期刊论文

作者Li, ZQ; Hu, BY; Yu, RT; Tian, T; Guo, ZC; Mu, JB; Zhang, XL; Wang, GS; Liu, XY; Liu, AF
刊名APPLIED SURFACE SCIENCE
出版日期2023
卷号608
英文摘要In this work, hollow CoSe2 nanospheres wrapped with reduced graphene oxide (rGO) nanosheets are fabricated through combining the self-templated method with the electrostatic self-assembled method followed by heat treatment. The experimental results indicate that rGO nanosheets can act as space separator and structural protector to reduce the aggregation and nanoparticle size of hollow CoSe2 nanospheres and meanwhile maintain their structural integrity. Density functional theory calculations indicate that the wrapping of rGO nanosheets not only increases the electrical conductivity but also reduces the adsorption energy of OH- at the CoSe2/rGO interface. Accordingly, hollow CoSe2/rGO nanocomposites yield specific capacities of 757C g-1 at 3 A/g and 552C g-1 at 20 A/g, as well as a capacity retention of 92 % over 5000 cycles at 10 A/g. When coupled with N -doped carbon nanotube-based negative electrode, the fabricated HSC device delivers an energy density of 50.1 W h kg-1 at 800 W kg-1 as well as maintains a capacity retention of 94 % after 5000 cycles. Our work offers a further understanding of the charge storage mechanism of hollow CoSe2/rGO nanocomposites and may be extended to develop other advanced nanostructured metal selenides/graphene electrodes.
源URL[http://210.75.249.4/handle/363003/61039]  
专题西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式
GB/T 7714
Li, ZQ,Hu, BY,Yu, RT,et al. Hollow cobalt selenide nanospheres wrapped with reduced graphene oxide nanosheets as electrodes for hybrid supercapacitor[J]. APPLIED SURFACE SCIENCE,2023,608.
APA Li, ZQ.,Hu, BY.,Yu, RT.,Tian, T.,Guo, ZC.,...&Liu, AF.(2023).Hollow cobalt selenide nanospheres wrapped with reduced graphene oxide nanosheets as electrodes for hybrid supercapacitor.APPLIED SURFACE SCIENCE,608.
MLA Li, ZQ,et al."Hollow cobalt selenide nanospheres wrapped with reduced graphene oxide nanosheets as electrodes for hybrid supercapacitor".APPLIED SURFACE SCIENCE 608(2023).

入库方式: OAI收割

来源:西北高原生物研究所

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