Recent Advances on the Use of Nickel Nano Layered Double Hydroxides as Green, and Efficient, Catalysts for Water Splitti
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Recent Advances on the Use of Nickel Nano Layered Double Hydroxides as Green, and Efficient, Catalysts for Water Splitting Daniel Likius1 · Ateeq Rahman1 · Chiguvare Zivayi2 · Veikko Uahengo1 Received: 31 October 2019 / Accepted: 29 December 2019 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract This review focusses on the recent developments in designing Layered Double Hydroxides (LDHs) with conductive, interlayer anion replacement, for efficient hydrogen fuel production by water splitting through Oxygen Evolution Reactions (OER) and Hydrogen Evolution Reactions (HER). Nickel nano structured catalysts improves OER performance are highlighted in detail in terms of compositional differences between transitional metal components, and challenges in future designing of rationalized Ni and Ni nano LDHs. The layered structure has exceptional flexibility of incorporating mixed valence transition metal ions into the LDHs structure in different compositions and this opens the massive potential to design high-performance LDHs catalysts on the molecular and nanometer scales. LDHs such as NiCoFe LDHs, Ni foam, Co Ni nano spheres, R uO2, Ir(dppe)2Cl, NiS2, Ni–N–Co-doped carbon nano fibers, N iCoSe2/cHRD are attracting increasing interest in the field of water splitting into hydrogen and oxygen due to their unique physicochemical properties. The highlighted summary will provide useful information in the development of novel Ni LDHs catalysts, which enables better understanding of OER properties valuable to address key issues. Increased fundamental understanding of water splitting catalysts would allow for rationallydirected improvements. Graphic Abstract
Keywords NiFe LDHs · Electro-catalysts · Water splitting · Ni co complexes
1 Introduction * Ateeq Rahman [email protected]; [email protected] 1
Department of Chemistry and Biochemistry, Faculty of Science, University of Namibia, Pionierspark, Post Bag 13301, Windhoek, Namibia
Department of Physics, University of Namibia, Pionierspark, Post Bag 13301, Windhoek, Namibia
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Sustainable energy access for all, with minimal negative impact on global climate are topics on the minds of many scientists working in the areas of water splitting, and energy storage [1]. Electrochemical methods including, water splitting for hydrogen production, solar energy conversion, supercapacitors, batteries and fuel cells, are promising routes to alleviate the world energy crisis [2]. By adopting hydrogen as a source of energy on a wide scale, the dream is
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to achieve a sustainable way of living, utilizing solar-driven vehicles, mobile devices, water purification systems and healthcare services [3]. This review discusses advances in the development and use of Ni catalysts for photo-electro-chemical (PEC) water splitting. It focuses on summarizing the latest developments in LDH electrocatalysts for the OER in terms of key issues and developed new approaches in designing LDHs. The preparation methods with elaborated highlights on des
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