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Nickel selenide supported on nickel foam as an efficient and durable non-precious electrocatalyst for the alkaline water electrolysis

Title
Nickel selenide supported on nickel foam as an efficient and durable non-precious electrocatalyst for the alkaline water electrolysis
Authors
Sivanantham, A[Sivanantham, Arumugam]Shanmugam, S[Shanmugam, Sangaraju]
DGIST Authors
Sivanantham, A[Sivanantham, Arumugam]; Shanmugam, S[Shanmugam, Sangaraju]
Issue Date
2017-04
Citation
Applied Catalysis B: Environmental, 203, 485-493
Type
Article
Article Type
Article
Keywords
Alkaline WaterAlkaline Water ElectrolyzerCost EffectivenessCurrent DensityElectrocatalystsElectrodesElectrolysisElectrolytesElectrolytic CellsEnergy EfficiencyFuel EconomyHydrogenNickelNickel SelenideOxygen EvolutionSelenidesSolar-to-HydrogenSolar Power GenerationUltra-Durable
ISSN
0926-3373
Abstract
Herein, we describe an in-situ hybridization of Nickel Selenide (Ni3Se2) with a Nickel Foam (NF) current collector as an efficient, ultra-durable electrode for the continuous alkaline water electrolysis. Earth abundant, cost effective, non-precious self-made Ni3Se2/NF electrode delivers an oxygen evolution reaction (OER) overpotential value of 315 mV at a current density of 100 mA cm−2 (versus a reversible hydrogen electrode) in aqueous electrolyte of 1 M KOH. On a static current density of 100 mA cm−2, Ni3Se2/NF electrode shows a good OER stability over 285 h with very small potential loss of 5.5% in alkaline electrolyte. Accordingly, the alkaline water electrolyzer constructed with Ni3Se2/NF (anode) and NiCo2S4/NF (cathode), it requires 1.58 V to deliver 10 mA cm−2 current density, with 500 h continuous operation in 1 M KOH. In addition, we demonstrate that the light-driven water splitting using solar panel, it can be a promising approach to facilitate true independence from electricity in H2 fuel economy. Overall, this methodology is one of the appropriate energy efficient ways to reduce the cost of water splitting devices, as it may simplify the diverse process and equipment. © 2016 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/2037
DOI
10.1016/j.apcatb.2016.10.050
Publisher
Elsevier B.V.
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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