Synergistic effect of ultrafine nano-Ru decorated cobalt carbonate hydroxides nanowires for accelerated alkaline hydrogen evolution reaction

Li, Jiachen; Zhou, Qingwen; Shen, Zihan; Li, Shengwen; Pu, Jun; Zhong, Chenglin; Cao, Mengqiu; Jin, Xin; Zhang, Huigang; Wang, Yao‐Yu; Ma, Hua

doi:10.1016/j.electacta.2019.135367

Cited by 43 publications

(16 citation statements)

References 52 publications

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“…The electrochemical HER performances of Ru-SA-NSFC, Ir-SA-NSFC, and Pt-SA-NSFC were also studied. The overpotentials at a current density of 10 mA cm −2 of Ru-SA-NSFC, Ir-SA-NSFC, and Pt-SA-NSFC were 62, 67 and 45 mV, respectively, implying comparable HER activities with reported noble metal-based electrocatalysts (Supplementary Table 12) [57][58][59][60][61][62] .…”

Section: Resultsmentioning

confidence: 70%

Multilayer stabilization for fabricating high-loading single-atom catalysts

et al. 2020

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Metal single-atom catalysts (M-SACs) have emerged as an attractive concept for promoting heterogeneous reactions, but the synthesis of high-loading M-SACs remains a challenge. Here, we report a multilayer stabilization strategy for constructing M-SACs in nitrogen-, sulfur- and fluorine-co-doped graphitized carbons (M = Fe, Co, Ru, Ir and Pt). Metal precursors are embedded into perfluorotetradecanoic acid multilayers and are further coated with polypyrrole prior to pyrolysis. Aggregation of the metals is thus efficiently inhibited to achieve M-SACs with a high metal loading (~16 wt%). Fe-SAC serves as an efficient oxygen reduction catalyst with half-wave potentials of 0.91 and 0.82 V (versus reversible hydrogen electrode) in alkaline and acid solutions, respectively. Moreover, as an air electrode in zinc–air batteries, Fe-SAC demonstrates a large peak power density of 247.7 mW cm−2 and superior long-term stability. Our versatile method paves an effective way to develop high-loading M-SACs for various applications.

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Section: Resultsmentioning

confidence: 70%

Multilayer stabilization for fabricating high-loading single-atom catalysts

et al. 2020

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“…In their case, an increase in Ru content had led to further enhancement until the wt.% of Ru reached 16 % and no significant improvement was witnessed thereafter (Figure 9 c,d). In related studies, Li and co‐workers [117] and Ma and co‐workers [118] have recently shown that such HER enhancement can also be witnessed with NiCo LDH and cobalt carbonate hydroxide nanowires using Ru. Next to Pt and Ru, the most studied metal is Cu as a heterophase with metal hydroxide HER electrocatalysts in alkaline medium.…”

Section: Metal‐metal Hydroxide Heterostructuresmentioning

confidence: 92%

Strategies and Perspectives to Catch the Missing Pieces in Energy‐Efficient Hydrogen Evolution Reaction in Alkaline Media

et al. 2021

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Transition metal hydroxides (M‐OH) and their heterostructures (X|M‐OH, where X can be a metal, metal oxide, metal chalcogenide, metal phosphide, etc.) have recently emerged as highly active electrocatalysts for hydrogen evolution reaction (HER) of alkaline water electrolysis. Lattice hydroxide anions in metal hydroxides are primarily responsible for observing such an enhanced HER activity in alkali that facilitate water dissociation and assist the first step, the hydrogen adsorption. Unfortunately, their poor electronic conductivity had been an issue of concern that significantly lowered its activity. Interesting advancements were made when heterostructured hydroxide materials with a metallic and or a semiconducting phase were found to overcome this pitfall. However, in the midst of recently evolving metal chalcogenide and phosphide based HER catalysts, significant developments made in the field of metal hydroxides and their heterostructures catalysed alkaline HER and their superiority have unfortunately been given negligible attention. This review, unlike others, begins with the question of why alkaline HER is difficult and will take the reader through evaluation perspectives, trends in metals hydroxides and their heterostructures catalysed HER, an understanding of how alkaline HER works on different interfaces, what must be the research directions of this field in near future, and eventually summarizes why metal hydroxides and their heterostructures are inevitable for energy‐efficient alkaline HER.

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“…Decrease in platinum content with the increase in electrocatalytic activity was also reported for platinum nanoparticles dispersed on Ni(OH) 2 [73][74][75], Ni 3 N [76] CoP [77], nitrogen-doped carbon/Ni nanofibers [78], nitrogen-doped ordered mesoporous carbon [79], sulfur-doped graphene [80], and Fe-doped α-Ni(OH) 2 [81]. Similar synthetic procedures as those described in the preceding text were used for preparation of other supported PGMs or their alloys and composites with non-noble metals, including Pd@Cu(II) phthalocyanine/MOF [82]; Ru nanoparticles supported on cobalt carbonate hydroxide nanowires [83]; PtCu anchored on N-doped carbon nanofibers [84]; and Co, Fe co-doped Ru on carbon [85]. Further improvement of electrocatalytic of supported metallic nanoparticles can also be achieved by the functionalization of Pt/CoP with ethylene glycol [77], with the specific activity of 101.2 mA µg Pt −1 and Rh with polyallylamine [86].…”

Section: Supported Metallic Nanoparticlesmentioning

confidence: 99%

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

et al. 2020

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Hydrogen evolution reaction (HER) is one of the most important reactions in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is not possible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and recently emerging, single-atom catalysts for HER.

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Synergistic effect of ultrafine nano-Ru decorated cobalt carbonate hydroxides nanowires for accelerated alkaline hydrogen evolution reaction

Cited by 43 publications

References 52 publications

Multilayer stabilization for fabricating high-loading single-atom catalysts

Multilayer stabilization for fabricating high-loading single-atom catalysts

Strategies and Perspectives to Catch the Missing Pieces in Energy‐Efficient Hydrogen Evolution Reaction in Alkaline Media

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

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