Yang, F;
Shen, Y;
Cen, Z;
Wan, J;
Li, S;
He, G;
Hu, J;
(2022)
In situ construction of heterostructured bimetallic sulfide/phosphide with rich interfaces for high-performance aqueous Zn-ion batteries.
Science China Materials
, 65
pp. 356-363.
10.1007/s40843-021-1739-0.
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He_In situ construction of heterostructured bimetallic sulfide:phosphide with rich interfaces for high-performance aqueous Zn-ion batteries_AAM.pdf - Accepted Version Download (19MB) | Preview |
Abstract
It is still challenging to develop suitable cathode structures for high-rate and stable aqueous Zn-ion batteries. Herein, a phosphating-assisted interfacial engineering strategy is designed for the controllable conversion of NiCo_{2}S_{4} nanosheets into heterostructured NiCoP/NiCo_{2}S_{4} as the cathodes in aqueous Zn-ion batteries. The multicomponent heterostructures with rich interfaces can not only improve the electrical conductivity but also enhance the diffusion pathways for Zn-ion storage. As expected, the NiCoP/NiCo_{2}S_{4} electrode has high performance with a large specific capacity of 251.1 mA h g^{−1} at a high current density of 10 A g^{−1} and excellent rate capability (retaining about 76% even at 50 A g^{−1}). Accordingly, the Zn-ion battery using NiCoP/NiCo_{2}S_{4} as the cathode delivers a high specific capacity (265.1 mA h g^{−1} at 5A g^{−1}), a long-term cycling stability (96.9% retention after 5000 cycles), and a competitive energy density (444.7 W h kg^{−1} at the power density of 8.4 kW kg^{−1}). This work therefore provides a simple phosphating-assisted interfacial engineering strategy to construct heterostructured electrode materials with rich interfaces for the development of high-performance energy storage devices in the future.
| Type: | Article |
|---|---|
| Title: | In situ construction of heterostructured bimetallic sulfide/phosphide with rich interfaces for high-performance aqueous Zn-ion batteries |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/s40843-021-1739-0 |
| Publisher version: | https://doi.org/10.1007/s40843-021-1739-0 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | NiCoP/NiCo_{2}S_{4}, Zn-ion batteries, high capacity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10140265 |
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