Nickel-iron layered silicate nanomembrane as efficient electrocatalyst for oxygen evolution reaction in alkaline media
Nickel-iron bimetal compounds have shown to be efficient electrocatalysts for the oxygen evolution reaction (OER) in alkaline environment. Here, we report the outstanding OER performance of an iron doped nickel layered silicate (NiFe)SiO(OH) (x = 0, 0.1, 0.2, 0.3 and 0.4), which was synthesized via a combined co-precipitation and hydrothermal method. The doping Fe ions are found to have a stronger adsorption effect on the *O intermediate, thereby reducing the energy barrier for the potential determining step *OH → *O, and as a result greatly enhance the OER activity of nickel layered silicate. At Fe doping concentration of 30 mol%, a minimum OER overpotential of 286 mV is achieved at the current density of 10 mA cm without IR correction, 86 mV lower than that of undoped catalyst. Moreover, the catalyst maintains favorable OER stability over a 24-hour chronopotentiometry test in 1 M KOH. This work provides insights into exploration and design of metal silicate-based OER catalysts.
|ESI Research Field|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Department of Mechanical and Energy Engineering|
1.School of New Energy and Materials,Southwest Petroleum University,Chengdu,610500,China
2.School of Materials Science and Engineering,Beihang University,Beijing,100191,China
3.State Key Laboratory of Long-Life High Temperature Materials,Deyang,618000,China
4.School of Physics,University of Electronic Science and Technology of China,Chengdu,610054,China
5.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
Zhang，Jing,Li，Zhaolong,Bai，Guo,et al. Nickel-iron layered silicate nanomembrane as efficient electrocatalyst for oxygen evolution reaction in alkaline media[J]. FUEL,2023,332.
Zhang，Jing.,Li，Zhaolong.,Bai，Guo.,Wang，Qingbing.,Zhang，Jin.,...&Ma，Zhiyuan.(2023).Nickel-iron layered silicate nanomembrane as efficient electrocatalyst for oxygen evolution reaction in alkaline media.FUEL,332.
Zhang，Jing,et al."Nickel-iron layered silicate nanomembrane as efficient electrocatalyst for oxygen evolution reaction in alkaline media".FUEL 332(2023).
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