Metal–organic framework derived Os-doped Ni<sub><i>x</i></sub>P/N-doped carbon composite nanosheet arrays toward boosting methanol oxidation into value-added chemicals coupled with hydrogen production

Duan, Zhongyao; Ren, Tianlun; Mao, Qiqi; Yu, Hongjie; Deng, Kai; Xu, You; Wang, Ziqiang; Wang, Liang; Wang, Hongjing

doi:10.1039/d2ta05711e

Cited by 12 publications

(2 citation statements)

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“…13 Moreover, the highly selective conversion of methanol to formate not only avoids the release of greenhouse gases (CO 2 ) but also obtains more value-added products. 14,15 Therefore, HER and MOR were combined to improve the energy utilization and effectiveness of water electrolysis for efficient hydrogen production and the production of value-added chemicals. 16,17 However, the development of efficient, durable, and lowcost catalysts is of key significance to both HER and MOR.…”

Section: Introductionmentioning

confidence: 99%

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Feng,

Zhu,

Pei

et al. 2023

Nanoscale

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Section: Introductionmentioning

confidence: 99%

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Feng,

Zhu,

Pei

et al. 2023

Nanoscale

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“…Furthermore, many methods have been devised to improve the activity and durability of MOR/HER electrocatalytic, including heteroatom doping and morphological design. [21][22][23][24] Recently, Duan et al [25] synthesized an Os─Ni x P/N─C/NF electrocatalyst that exhibited high Faradaic efficiency for generating anodic formate (92%) and cathodic H 2 (100%). The Os─Ni x P/N─C/NF||Os─NixP/N─C/NF two electrode systems required only 1.43 V to achieve an electrolytic current density of 10 mA cm −2 in 1.0 m KOH with 1.0 m methanol.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Acid/Base Electrolytic Cell for Hydrogen Generation and Methanol Conversion Implemented by Bifunctional Ni/MoN Nanorod Electrocatalyst

Rao,

Wang,

Chen

et al. 2023

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Combining the methanol oxidation reaction (MOR) and hydrogen evolution reaction (HER) within an integrated electrolytic system may offer the advantages of enhanced kinetics of the anode, reduced energy consumption, and the production of high‐purity hydrogen. Herein, it is reported the construction of Ni─MoN nanorod arrays supported on a nickel foam substrate (Ni─MoN/NF) as a bifunctional electrocatalyst for electrocatalytic hydrogen production and selective methanol oxidation to formate. Remarkably, The optimal Ni─MoN/NF catalyst displays exceptional HER performance with an overpotential of only 49 mV to attain 10 mA cm−2 in acid, and exhibits a high activity for MOR to achieve 100 mA cm−2 at 1.48 V in alkali. A hybrid acid/base electrolytic cell with Ni─MoN/NF electrode as anode and cathode is further developed for an integrated HER–MOR cell, which only requires a voltage of 0.56 V at 10 mA cm−2, significantly lower than that of the HER–OER system (0.70 V). The density functional theory studies reveal that the incorporation of Ni effectively modulates the electronic structure of MoN, thereby resulting in enhanced catalytic activity. The unique combination of high electrocatalytic activity and excellent stability make the Ni─MoN/NF catalyst a promising candidate for practical applications in electrocatalytic hydrogen production and methanol oxidation.

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Passivating Oxygen Evolution Activity of NiFe‐LDH through Heterostructure Engineering to Realize High‐Efficiency Electrocatalytic Formate and Hydrogen Co‐Production

Jiang

Xiao

et al. 2023

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An electrocatalytic methanol oxidation reaction (MOR) is proposed to replace oxygen evolution reaction (OER) in water electrolysis owing to the favorable thermodynamics of MOR than OER. However, there is still a competition between the MOR and the OER when the applied potential is in the conventional OER zone. How to inhibit OER while maintaining efficient MOR is an open and challenging question, and there are few reports focusing on this thus far. Herein, by taking NiFe layered double hydroxide (LDH) as a model catalyst due to its intrinsically high catalytic activity for the OER, the perspective of inhibiting OER is shown and thus promoting MOR through a heterogenous engineering of NiFe‐LDH. The engineered heterostructure comprising NiFe‐LDH and in situ formed NiFe‐hexylaminobenzene (NiFe‐HAB) coordination polymer exhibits outstanding electrocatalytic capability for methanol oxidation to formic acid (e.g., the Faradaic efficiencies (FEs) of formate product are close to 100% at various current densities, all of which are much larger than those (53–65%) on unmodified NiFe‐LDH). Mechanism studies unlock the modification of NiFe‐HAB passivates the OER activity of NiFe‐LDH through tailoring the free energies for element reaction steps of the OER and increasing the free energy of the rate‐determining step, consequently leading to efficient MOR.

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Metal–organic framework derived Os-doped Ni_xP/N-doped carbon composite nanosheet arrays toward boosting methanol oxidation into value-added chemicals coupled with hydrogen production

Abstract: Reducing the high energy of water splitting caused by a sluggish oxygen evolution reaction (OER) is essential, but still a challenge. Replacing the anode OER with a thermodynamically favorable organic...

Cited by 12 publications

References 44 publications

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Hybrid Acid/Base Electrolytic Cell for Hydrogen Generation and Methanol Conversion Implemented by Bifunctional Ni/MoN Nanorod Electrocatalyst

Passivating Oxygen Evolution Activity of NiFe‐LDH through Heterostructure Engineering to Realize High‐Efficiency Electrocatalytic Formate and Hydrogen Co‐Production

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Metal–organic framework derived Os-doped NixP/N-doped carbon composite nanosheet arrays toward boosting methanol oxidation into value-added chemicals coupled with hydrogen production

Abstract: Reducing the high energy of water splitting caused by a sluggish oxygen evolution reaction (OER) is essential, but still a challenge. Replacing the anode OER with a thermodynamically favorable organic...

Cited by 12 publications

References 44 publications

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Platinum–palladium-on-reduced graphene oxide as bifunctional electrocatalysts for highly active and stable hydrogen evolution and methanol oxidation reaction

Hybrid Acid/Base Electrolytic Cell for Hydrogen Generation and Methanol Conversion Implemented by Bifunctional Ni/MoN Nanorod Electrocatalyst

Passivating Oxygen Evolution Activity of NiFe‐LDH through Heterostructure Engineering to Realize High‐Efficiency Electrocatalytic Formate and Hydrogen Co‐Production

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Metal–organic framework derived Os-doped Ni_xP/N-doped carbon composite nanosheet arrays toward boosting methanol oxidation into value-added chemicals coupled with hydrogen production