The preparation of hierarchical tubular structures comprised of NiO nanosheets with enhanced supercapacitive performance
发布时间：2025-04-30
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- 发布时间：
- 2025-04-30
- 论文名称：
- The preparation of hierarchical tubular structures comprised of NiO nanosheets with enhanced supercapacitive performance
- 发表刊物：
- RSC ADVANCES
- 摘要：
- Hierarchically tubular structures comprised NiO nanosheets were successfully prepared through a mild solution route based on the template of polymeric nanotubes (PNT) followed by a thermal annealing treatment. The microstructure and chemical composition of NiO nanosheets nanotubes are investigated by SEM, TEM, HRTEM, SAED and XRD. The Brunauer-Emmett-Teller (BET) specific surface area of this sample is calculated to be 98 m(2) g(-1) and the majority of pores have a size in the range of 2-10 nm. The thermal behavior of Ni-precursor@ PNT was studied by TGA and the weight fraction of NiO nanosheets nanotubes obtained by calcination is measured to be 57.0%. The specific capacitance of the unique NiO nanosheets nanotubes is 588 F g(-1) at the end of 1000 cycles when the charge-discharge current density is 3 A g (1), leading to only 5.2% capacity loss. In addition, the NiO nanotubes coating by relatively sparse and thin nanosheets possess better electrochemical properties. The specific capacitance is 960 F g(-1) at the end of 1000 cycles when the charge-discharge current density is 10 A g(-1), leading to only 1.2% capacity loss. Broadly, the as-obtained NiO nanosheets nanotubes reveal relatively high capacitance and remarkable cycling stability in virtue of the hollow, porous, flaky and tubular nanostructures.
- 合写作者：
- Xu, Xin; Liang, Jin; Zhou, Han; Ding, Shujiang; Yu, Demei
- 是否译文：
- 否
- 发表时间：
- 2014-01-01