Non-precious alloy encapsulated in nitrogen-doped graphene layers derived from MOFs as an active and durable hydrogen evolution reaction catalyst

Yang, Yang; Lun, Zhengyan; Xia, Guoliang; Zheng, Fangcai; He, Mengni; Chen, Qianwang

doi:10.1039/c5ee02460a

Cited by 495 publications

(365 citation statements)

References 46 publications

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“…In addition to M-N-C catalysts, Yang et al, also reported the derivation of bimetallic (FeCo) alloy from MOF precursor with a relatively lower onset potential of 88 mV vs RHE and over-potential of 262 mV at 10 mA cm −2 . [107] However, the reports of alloy based catalysts for HER are limited and need further exploration due to possibility of tailoring d-band structure and ΔG H * for adsorption of H + moieties. The carbon coated, high surface hollow alloy structures could be particularly interesting due to enhanced structural stability, large number of active sites and mass transport.…”

Section: Wileyonlinelibrarycommentioning

confidence: 99%

Metal‐Organic Framework‐Based Nanomaterials for Electrocatalysis

Mahmood

Guo

Tabassum

et al. 2016

Advanced Energy Materials

552

325

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Metal‐organic frameworks (MOFs) with high surface area and tunable chemical structures have attracted tremendous attention. Recently, there has been increasing interest in deriving advanced materials from MOFs for electrochemical energy storage and conversion. This progress report highlights recent breakthroughs in electrocatalysis by using MOF‐based novel catalysts, such as in oxygen reduction and evolution, hydrogen evolution and carbon dioxide reduction. The advantages of preparing electrocatalysts from MOFs are introduced and discussed. Then, the development of MOF derived electrocatalysis‐active products, such as heteroatom‐doped carbon, metal oxide (MO), metal sulfide (MS), metal carbide (MC), metal phosphide (MP) and their hybrids with carbon, are summarized. The detailed functions of these materials in representative electrocatalysis systems are also reviewed. The demonstrated examples will provide understanding in preparing highly active and stable electrocatalysts. The progress report concludes with the future applications of MOF‐based materials in the field of electrocatalysis.

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Section: Wileyonlinelibrarycommentioning

confidence: 99%

Metal‐Organic Framework‐Based Nanomaterials for Electrocatalysis

Mahmood

Guo

Tabassum

et al. 2016

Advanced Energy Materials

552

325

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“…This core/shell catalyst had a high conductivity and large active surface area and exhibited good electrocatalytic activity toward HER. Yang et al 65 also did an interesting work based on this idea. Tavakkoli et al 64 used single-walled CNTs as the carbon shell to encapsulate Fe nanoparticles by CVD technique (Fig.…”

Section: Noble Metal-free Compositesmentioning

confidence: 99%

Nanostructured catalysts for electrochemical water splitting: current state and prospects

et al. 2016

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Hydrogen is an ideal candidate for the replacement of fossil fuels in the future due to its zero emission of the carbonaceous species during its utilization. Water electrolysis is a dependable link of primary renewable energy and stable hydrogen energy. In this work, the fundamentals of water electrolysis, current popular electrocatalysts developed for cathodic hydrogen evolution reaction (HER) and anodic oxygen evoltion reacion (OER) in liquid electrolyte water electrolysis are reviewed. The main HER catalysts include noble metals, non-noble metal and composites, noble metal-free alloy, metal carbides, chalcogenides, phosphides and metal-free materials while the OER catalysts are focused on efficient Co-based, Ni-based materials and layered double hydroxides (LDH) materials. The strategies to improve catalytic activity, long-term durability and endurance to electrochemical erosions are introduced. The main challenges and future prospects for the further development of electrodes for water electrolysis are discussed. It is expected to give a guidance to the development of novel nanostructured electrocatalysts with low-cost for the electrochemical water splitting.

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“…Thus, few carbon layers encapsulated metal NPs have been proved to be efficient oxygen electrode reaction and HER catalysts. 9,10,[45][46][47][48][49] However, to the best of our knowledge, TMPs encapsulated in carbon shell with enhanced HER activity, and the effect of dopants and carbon shells, have not been experimentally and theoretically studied.…”

mentioning

confidence: 99%

Ultrathin Nitrogen-Doped Carbon Coated with CoP for Efficient Hydrogen Evolution

et al. 2017

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Searching for non-noble metal based electrocatalysts with high efficiency and durability toward hydrogen evolution reaction (HER) is vitally necessary for the upcoming clean and renewable energy systems. Here we report the synthesis of CoP nanoparticles encapsulated in ultrathin nitrogen-doped porous carbon (CoP@NC) through a metal-organic framework (MOF) route. This hybrid exhibits remarkable electrocatalytic activity toward HER in both acidic and alkaline media, with good stability. The experiment and theoretical calculation reveal that the carbon atoms adjacent to N dopants on the shells of CoP@NC are active sites for hydrogen evolution, and CoP and N dopants synergistically optimize the binding free energy of H* on the active sites, which results in a higher electrocatalytic activity than its counterparts without nitrogen doping and/or CoP-encapsulation.

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Non-precious alloy encapsulated in nitrogen-doped graphene layers derived from MOFs as an active and durable hydrogen evolution reaction catalyst

Abstract: An FeCo alloy covered with nitrogen doped graphene is prepared by direct annealing of Fe3[Co(CN)6]2nanoparticles, exhibiting efficient HER catalysis.

Cited by 495 publications

References 46 publications

Metal‐Organic Framework‐Based Nanomaterials for Electrocatalysis

Metal‐Organic Framework‐Based Nanomaterials for Electrocatalysis

Nanostructured catalysts for electrochemical water splitting: current state and prospects

Ultrathin Nitrogen-Doped Carbon Coated with CoP for Efficient Hydrogen Evolution

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