Local atomic structure modulations activate metal oxide as electrocatalyst for hydrogen evolution in acidic water

Li, Yu Hang; Liu, Peng Fei; Pan, Lin; Wang, Hai Feng; Yang, Zhen; Zheng, Lirong; Hu, Peipei; Zhao, Huijun; Gu, Lin; Yang, Hua

doi:10.1038/ncomms9064

Cited by 284 publications

(148 citation statements)

References 34 publications

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“…In the recent years, great efforts have also been made to develop binary or ternary non‐noble metals or oxides in water oxidation electrocatalysts (e.g. Fe,127 Ni‐Fe,128 Ni‐Co,129 Ni‐Fe‐Co130 and CaMn 4 O x 131) and non‐noble metal oxides, sulfides and phosphides water reduction electrocatalysts (MoO 3–x ,132 WO 2 ,133 WO 3 ,134 MoS 2, 135 WS 2 ,[[qv: 135b]] CoP,136 Co 2 P137 and Ni 2 P[[qv: 137a,138]]) for cost‐competitive electrocatalysis. The non‐noble metal electrocatalysts were also extended to bifunctional types such as TiN@Ni 3 N,139 Ni 3 Se 2 /Ni,140 CoO/CoSe 2 141 and CoMnO@CN142 for both HER and OER in overall water splitting.…”

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

“…Meanwhile, analogous structures such as WS 2 [[qv: 135b,154]] also provoked tremendous interest as HER electrocatalysts for water splitting. Besides, other oxides such as MoO 3–x ,132 WO 2 133 and WO 3 134 also exhibited promising performance toward HER. There are other molybdenum‐based nanostructures that were studied as HER electrocatalysts for water splitting, including MoB,155 Mo 2 C,155, 156 NiMoN x ,157 and Co 0.6 Mo 1.4 N 2 158…”

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

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Recent Progress in Energy‐Driven Water Splitting

et al. 2017

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Hydrogen is readily obtained from renewable and non‐renewable resources via water splitting by using thermal, electrical, photonic and biochemical energy. The major hydrogen production is generated from thermal energy through steam reforming/gasification of fossil fuel. As the commonly used non‐renewable resources will be depleted in the long run, there is great demand to utilize renewable energy resources for hydrogen production. Most of the renewable resources may be used to produce electricity for driving water splitting while challenges remain to improve cost‐effectiveness. As the most abundant energy resource, the direct conversion of solar energy to hydrogen is considered the most sustainable energy production method without causing pollutions to the environment. In overall, this review briefly summarizes thermolytic, electrolytic, photolytic and biolytic water splitting. It highlights photonic and electrical driven water splitting together with photovoltaic‐integrated solar‐driven water electrolysis.

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Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

Section: Electrocatalytic Water Splittingmentioning

confidence: 99%

Recent Progress in Energy‐Driven Water Splitting

et al. 2017

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“…However, it is well known that bulk WO3 itself, has poor HER and low electrical conductivity and therefore the improvement cannot be directly rationalized. 52,53 Journal Name ARTICLE 6 | J. Name., 2012, 00, 1-3 This journal is © The Royal Society of Chemistry 20xx…”

Section: Electrochemical Anodic Activation Studiesmentioning

confidence: 99%

The effects of exfoliation, organic solvents and anodic activation on the catalytic hydrogen evolution reaction of tungsten disulfide

et al. 2017

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The rational design of transition metal dichalcogenide electrocatalysts for efficiently catalyzing the hydrogen evolution reaction (HER) is believed to lead to the generation of a renewable energy carrier. To this end, our work has made three main contributions. At first, we have demonstrated that exfoliation via ionic liquid assisted grinding combined with gradient centrifugation is an efficient method to exfoliate bulk WS to nanosheets with a thickness of a few atomic layers and lateral size dimensions in the range of 100 nm to 2 nm. These WS nanosheets decorated with scattered nanodots exhibited highly enhanced catalytic performance for HER with an onset potential of -130 mV vs. RHE, an overpotential of 337 mV at 10 mA cm and a Tafel slope of 80 mV dec in 0.5 M HSO. Secondly, we found a strong aging effect on the electrocatalytic performance of WS stored in high boiling point organic solvents such as dimethylformamide (DMF). Importantly, the HER ability could be recovered by removing the organic (DMF) residues, which obstructed the electron transport, with acetone. Thirdly, we established that the HER performance of WS nanosheets/nanodots could be significantly enhanced by activating the electrode surface at a positive voltage for a very short time (60 s), decreasing the kinetic overpotential by more than 80 mV at 10 mA cm. The performance enhancement was found to arise primarily from the ability of a formed proton-intercalated amorphous tungsten trioxide (a-WO) to provide additional active sites and favourably modify the immediate chemical environment of the WS catalyst, rendering it more favorable for local proton delivery and/or transport to the active edge site of WS. Our results provide new insights into the effects of organic solvents and electrochemical activation on the catalytic performance of two-dimensional WS for HER.

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“…Tu ngsten is similar to Mo as they are in the same group in the periodic table of elements and potentially an interesting Pt-free electrocatalyst for the HER.W -based materials,s uch as its oxide (WO 2 or WO 2.9 ), disulfide (WS 2 ), nitride (WN or W 2 N), carbide( WC or W 2 C), or phosphide (WP or WP 2 ), have emerged as the preferred catalysts for HER. [19][20][21][22][23][24][25][26][27] Among them, tungsten phosphide exhibits ar emarkable advantage due to its high electrical conductivity. [28] Recently, considerable efforts were directed towards structure and component design to furthere nhance the HER activity.F or instance, Schaaka nd co-workers developed amorphous WP nanoparticles as an efficient and acid-stable HER catalyst.…”

mentioning

confidence: 99%

In Situ Fabrication of Tungsten Diphosphide Nanoparticles on Tungsten foil: A Hydrogen‐Evolution Cathode for a Wide pH Range

Amiinu

2016

Energy Tech

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Identifying non‐precious metal electrocatalysts for the hydrogen‐evolution reaction (HER) with high efficiency and stability is a considerable challenge for the hydrogen‐based energy industry. We report the preparation of WP2 nanoparticles supported on W foil (WP2 NPs/W) through phosphidation of the corresponding WO3 NPs/W precursor. This hydrogen evolution cathode shows a high HER catalytic activity with a low overpotential (j>100 mA cm−2 at η=211 mV), a small Tafel slope (66 mV dec−1), and a large exchange current density (0.09 mA cm−2) as well as excellent stability over 27 h in acidic solution. Notably, this catalyst also offers superior catalytic activity and remarkable stability under neutral and alkaline conditions. It is worth noting that, as a Pt‐free HER catalyst, WP2 NPs/W shows an electrocatalytic activity comparable to reported noble metal‐free HER electrocatalysts at all pH values. Thus, the in situ conversion method provides a pathway to fabricate highly efficient and low‐cost as well as self‐supported non‐precious‐metal electrodes for HER.

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Local atomic structure modulations activate metal oxide as electrocatalyst for hydrogen evolution in acidic water

Cited by 284 publications

References 34 publications

Recent Progress in Energy‐Driven Water Splitting

Recent Progress in Energy‐Driven Water Splitting

The effects of exfoliation, organic solvents and anodic activation on the catalytic hydrogen evolution reaction of tungsten disulfide

In Situ Fabrication of Tungsten Diphosphide Nanoparticles on Tungsten foil: A Hydrogen‐Evolution Cathode for a Wide pH Range

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