Enhanced activity of CaFeMg layered double hydroxides-supported gold nanodendrites for the electrochemical evolution of oxygen and hydrogen in alkaline media

Havakeshian, Elaheh; Salavati, Hossein; Taei, M.; Hasheminasab, Fatemeh; Seddighi, Mohadeseh

doi:10.1016/j.cplett.2017.12.076

Cited by 4 publications

(1 citation statement)

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“…Synergistic effects, a special emphasis between the two components, result in an enhanced performance compared with each single component. [173] The mechanism of synergistic effect has been described clearly in Section 3.1 (the bi-functional mechanism), including interaction between metal and TM(OH)x [174][175][176], compounds and TM(OH)x [177], ions and ions [60,155,178]. For example, Edvinsson's group [179] suggested that the synergistic effect between Fe and Ni in NiFe LDHs for overall water splitting as shown in Fig.…”

Section: Synergistic Effectmentioning

confidence: 99%

Layered transition-metal hydroxides for alkaline hydrogen evolution reaction

Liu

Wang

Sun

2020

Chinese Journal of Catalysis

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Hydrogen is a promising sustainable energy to replace fossil fuels owning to its high specific energy and environmental friendliness. Alkaline water electrolysis has been considered as one of the most prospective technologies for large scale hydrogen production. To boost the sluggish kinetics of hydrogen evolution reaction (HER) in alkaline media, abundant materials have been designed and fabricated. Herein, we summarize the key achievements in the development of layered transition-metal hydroxides [TM(OH)x] for efficient alkaline HER. Based on the structure of TM(OH)x, the mechanism of synergistic effect between TM(OH)x and HER active materials is illuminated firstly. Then, recent progress of TM(OH)x-based HER catalysts to optimize the synergistic effect are categorized as TM(OH)x and active materials, including species, structure, morphology and interaction relationship. Furthermore, TM(OH)x-based overall water splitting electrocatalysts and electrodes are summarized in the design principles for high activity and stability. Finally, some of key challenges for further developments and applications of hydrogen production are proposed.

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