Combined anodic and cathodic hydrogen production from aldehyde oxidation and hydrogen evolution reaction

Wang, Tehua; Li, Tao; Zhu, Xiaorong; Chen, Chen; Chen, Wei; Du, Shiqian; Zhou, Yangyang; Zhou, Bo; Wang, Dongdong; Xie, Chao; Peng, Long; Li, Wei; Wang, Yanyong; Chen, Ru; Zou, Yuqin; Fu, Xian‐Zhu; Li, Yafei; Duan, Xiangfeng; Wang, Shuangyin

doi:10.1038/s41929-021-00721-y

Cited by 360 publications

(248 citation statements)

References 53 publications

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“…Because the valuable target products could be continuously and efficiently produced by the addition of the reactants at two-electrode chambers without producing side products. Otherwise, if H or O species come from organics, such as H provided by hydroxyl groups of orgaincs 52 or dehydrogenation of anodic oxidation 53 and O originated from deoxygenation of cathodic reduction 54 , other reaction pathways occur and side reactions happen, resulting in reducing the selectivity of target products 55 . Or if dissolved oxygen from air as O source is also not sustainable due to the small amount 56 .…”

Section: Discussionmentioning

confidence: 99%

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

et al. 2022

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Paired electroreduction and electrooxidation of organics with water as a feedstock to produce value-added chemicals is meaningful. A comprehensive understanding of reaction mechanism is critical for the catalyst design and relative area development. Here, we have systematically studied the mechanism of the paired electroreduction and electrooxidation of organics on Fe-Mo-based phosphide heterojunctions. It is shown that active H* species for organic electroreduction originate from water. As for organic electrooxidation, among various oxygen species (OH*, OOH*, and O*), OH* free radicals derived from the first step of water dissociation are identified as active species. Furthermore, explicit reaction pathways and their paired advantages are proposed based on theoretical calculations. The paired electrolyzer powered by a solar cell shows a low voltage of 1.594 V at 100 mA cm−2, faradaic efficiency of ≥99%, and remarkable cycle stability. This work provides a guide for sustainable synthesis of various value-added chemicals via paired electrocatalysis.

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Section: Discussionmentioning

confidence: 99%

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

et al. 2022

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“…Further studies reveal that metallic Cu can only exclusively oxidize aldehyde group into carboxylic acid but be inert to hydroxymethyl group. [ 67 ] This finding inspires researchers to pay more attention on the catalyst design of furan compounds for selectively conversion and aldehyde‐containing biomass for low‐voltage H 2 generation.…”

Section: Oxidative Refining Of Biomassmentioning

confidence: 99%

Earth‐Abundant Metal‐Based Electrocatalysts Promoted Anodic Reaction in Hybrid Water Electrolysis for Efficient Hydrogen Production: Recent Progress and Perspectives

Deng

Toe

Xuan

et al. 2022

Advanced Energy Materials

123

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Figure 14. a) Schematic diagram of the ammonia-assisted HWE electrolyzer. b) LSVs curves of LNCO55-Ar and Pt/C. c) Electrolysis current density at 1.23 V, and d) the concentration profile of ammonia and removal efficiency of LNCO55-Ar. Reproduced with permission. [219] Copyright 2021, Wiley-VCH. e) Schematic illustration of the AmOR over ternary NiCuFe oxyhydroxide. f) Energy barrier profiles of different reaction steps in NiCuFe oxyhydroxide and NiCu oxyhydroxide via pathway II. Charge difference g) in NiCu oxyhydroxide system, and h) NiCuFe oxyhydroxide. Reproduced with permission. [221] Copyright 2021, Wiley-VCH. i) Performance comparison of sulfide oxidation and OER catalyzed by CoNi@NGs. j) Photo of the H 2 S electrolysis device driven by a 1.2 V commercial battery directly. k) FE and H 2 evolution rates in a galvanostatic test at 100 mA cm −2 . l) Comparison of the projected density of states of S(3p) and its bonded C(2p) when S is adsorbed on the surface of pristine graphene, CoNi@Gs and CoNi@NGs. m) Free energy profiles of the formation of polysulfides (S x *) in the aqueous solution on N-Graphene's surface and CoNi@NGs' surface. Reproduced with permission. [222]

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“…Developing value-added reactions to supplant oxygen-evolving reaction is a challenging research topic in the current water electrolysis field, which favours the facile preparation of high-purity hydrogen gas and helps reduce the cost of water electrolysis. Indeed, numerous hybrid water electrolysis systems, which replace oxygen-evolving reaction by electrocatalytic oxidation of organics (such as urea, [3][4][5] alcohols [6][7][8][9][10][11][12][13][14][15] and aldehydes [16][17][18] ), have been reported to boost large-scale hydrogen production from water electrolysis.…”

Section: Introductionmentioning

confidence: 99%

Co²⁺‐Doped Porous Ni(OH)₂ Nanosheets Electrode for Selective Electrocatalytic Oxidation of Methanol at High Current Densities

Ming

Wang

et al. 2022

ChemElectroChem

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Co 2 + -doped Ni(OH) 2 nanosheets were grown on porous Ni foam by a simple electrodeposition method. The obtained samples were used as porous electrodes for selective electrocatalytic oxidation of methanol to formate in NaOH aqueous solution. The results indicated the oxidizing abilities of the as-prepared electrodes could be regulated by the doping content of Co 2 + for the electrooxidation of methanol, in which the electrode with a Co 2 + doping content of 10 mol % required a lowest potential of ~1.32 V vs. RHE to achieve a current density of 100 mA cm À 2 as compared with other electrodes. And the doping of Co 2 + helped boosting the Faradic efficiency for the electrocatalytic oxidation of methanol. Moreover, the electrooxidation of methanol for the production of formate (Faradic efficiency � 96.5 %) with the simultaneous generation of hydrogen was easily implemented in a two-electrode configuration at high current densities (100-500 mA cm À 2 ). The results of the durability test further revealed that the 10 mol % Co 2 + -doped Ni(OH) 2 electrode exhibited an outstanding stability for the electrocatalytic oxidation of methanol in the present system.

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Combined anodic and cathodic hydrogen production from aldehyde oxidation and hydrogen evolution reaction

Cited by 360 publications

References 53 publications

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

Earth‐Abundant Metal‐Based Electrocatalysts Promoted Anodic Reaction in Hybrid Water Electrolysis for Efficient Hydrogen Production: Recent Progress and Perspectives

Co²⁺‐Doped Porous Ni(OH)₂ Nanosheets Electrode for Selective Electrocatalytic Oxidation of Methanol at High Current Densities

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Combined anodic and cathodic hydrogen production from aldehyde oxidation and hydrogen evolution reaction

Cited by 360 publications

References 53 publications

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

Unraveling the mechanism for paired electrocatalysis of organics with water as a feedstock

Earth‐Abundant Metal‐Based Electrocatalysts Promoted Anodic Reaction in Hybrid Water Electrolysis for Efficient Hydrogen Production: Recent Progress and Perspectives

Co2+‐Doped Porous Ni(OH)2 Nanosheets Electrode for Selective Electrocatalytic Oxidation of Methanol at High Current Densities

Contact Info

Product

Resources

About

Co²⁺‐Doped Porous Ni(OH)₂ Nanosheets Electrode for Selective Electrocatalytic Oxidation of Methanol at High Current Densities