Research Article

|

2021, 14(8): 2574–2583

|

https://doi.org/10.1007/s12274-020-3257-z

Favorable anion adsorption/desorption of high rate NiSe2 nanosheets/hollow mesoporous carbon for battery-supercapacitor hybrid devices

Xiaojuan Zhao1, Houzhao Wan1 (✉), Pei Liang2 (✉), Nengze Wang1, Cong Wang1, Yi Gan1, Xu Chen1,3, Qiuyang Tan1, Xiang Liu1, Jun Zhang1, Yi Wang3, Hanbin Wang1 (✉), and Hao Wang1 (✉)

View Author's information

1 Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, School of Microelectronics and Faculty of Physics and Electronic Science, Hubei University, Wuhan 430062, China
2 College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
3 Max Planck Institute for Solid State Research, Heisenbergstr 1, 70569 Stuttgart, Germany

Keywords: nickel selenide, mesoporous carbon, supercapacitor, high rate, core-shell structure
Full article PDF
Cite this article(Endnote)
Share this article
Metric

views: 80

Citations: 0

  • Abstract
  • References
  • Electronic Supplementary Material
High-rate battery-type cathode materials have attracted wide attention for advanced battery-supercapacitor hybrid (BSH) devices. Herein, a core-shell structure of the hollow mesoporous carbon spheres (HMCS) supported NiSe2 nanosheets (HMCS/NiSe2) is constructed through two-step reactions. The HMCS/NiSe2 shows a max specific capacity of 1,153.5 C·g−1 at the current density of 1 A·g−1, and can remain at 774.5 C·g−1 even at 40 A·g−1 (the retention rate as high as 67.1%) and then the HMCS/NiSe2 electrode can keep 80.5% specific capacity after 5,000 cycles at a current density of 10 A·g−1. Moreover, the density functional theory (DFT) calculation confirmed that the introduction HMCS into NiSe2 made adsorption/desorption of OH− easier, which can achieve higher rate capability. The HMCS/NiSe2//6 M KOH//HMCS hybrid device has energy density of 47.15 Wh·kg−1 and power density of 801.8 W·kg−1. This work provides a feasible electrode material with a high rate and its preparation method for high energy density and power density energy storage devices.
Related Article
Cite this article

Favorable anion adsorption/desorption of high rate NiSe2 nanosheets/hollow mesoporous carbon for battery-supercapacitor hybrid devices. Nano Res. 2021, 14(8): 2574–2583 https://doi.org/10.1007/s12274-020-3257-z

Download citation