Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/92948
Title: Strong electronic interaction in dual-cation-incorporated NiSe2 nanosheets with lattice distortion for highly efficient overall water splitting
Authors: Sun, Yiqiang
Xu, Kun
Wei, Zengxi
Li, Huilin
Zhang, Tao
Li, Xinyang
Cai, Weiping
Ma, Jianmin
Fan, Hong Jin
Li, Yue
Keywords: Water Splitting
Bifunctional Electrocatalyst
DRNTU::Science::Physics
Issue Date: 2018
Source: Sun, Y., Xu, K., Wei, Z., Li, H., Zhang, T., Li, X., … Li, Y. (2018). Strong electronic interaction in dual-cation-incorporated NiSe2 nanosheets with lattice distortion for highly efficient overall water splitting. Advanced Materials, 30(35), 1802121-. doi:10.1002/adma.201802121
Series/Report no.: Advanced Materials
Abstract: Exploring highly efficient and low‐cost electrocatalysts for electrochemical water splitting is of importance for the conversion of intermediate energy. Herein, the synthesis of dual‐cation (Fe, Co)‐incorporated NiSe2 nanosheets (Fe, Co‐NiSe2) and systematical investigation of their electrocatalytic performance for water splitting as a function of the composition are reported. The dual‐cation incorporation can distort the lattice and induce stronger electronic interaction, leading to increased active site exposure and optimized adsorption energy of reaction intermediates compared to single‐cation‐doped or pure NiSe2. As a result, the obtained Fe0.09Co0.13‐NiSe2 porous nanosheet electrode shows an optimized catalytic activity with a low overpotential of 251 mV for oxygen evolution reaction and 92 mV for hydrogen evolution reaction (both at 10 mA cm−2 in 1 m KOH). When used as bifunctional electrodes for overall water splitting, the current density of 10 mA cm−2 is achieved at a low cell voltage of 1.52 V. This work highlights the importance of dual‐cation doping in enhancing the electrocatalyst performance of transition metal dichalcogenides.
URI: https://hdl.handle.net/10356/92948
http://hdl.handle.net/10220/48620
ISSN: 0935-9648
DOI: 10.1002/adma.201802121
Rights: This is the peer reviewed version of the following article: Sun, Y., Xu, K., Wei, Z., Li, H., Zhang, T., Li, X., … Li, Y. (2018). Strong electronic interaction in dual-cation-incorporated NiSe2 nanosheets with lattice distortion for highly efficient overall water splitting. Advanced Materials, 30(35), 1802121-. doi:10.1002/adma.201802121, which has been published in final form at http://dx.doi.org/10.1002/adma.201802121. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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