Interface construction of P-Substituted MoS2 as efficient and robust electrocatalyst for alkaline hydrogen evolution reaction

Huang, Xingkai; Xu, Haoxiang; Cao, Dong; Cheng, Daojian

doi:10.1016/j.nanoen.2020.105253

Cited by 90 publications

(50 citation statements)

References 45 publications

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“…[6][7][8][9] Much improvement has been achieved on half-reaction performance by developing HER or OER catalysts, including both noble-metal based catalysts, [2,10,11] and noble-metal-free catalysts. [12][13][14][15] On the other hand, developing a single electrocatalyst coupling both HER and OER activities in the same electrolyte for overall water splitting is more attractive for practical applications, and is therefore technologically important yet challenging. [9,16,17] To date, the main route for industrial HER/OER is the electrolysis of water in alkaline solution due to its mild condition, where higher stability of the electrode material can be retained.…”

Section: Doi: 101002/smll202107238mentioning

confidence: 99%

Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Wang

Zhang

et al. 2022

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Metallic MoS2 (i.e., 1T‐MoS2) is considered as the most promising precious‐metal‐free electrocatalyst with outstanding hydrogen evolution reaction (HER) performance in acidic media comparable to Pt. However, sluggish kinematics of HER in alkaline media and its inability for the oxygen evolution reaction (OER), hamper its development as bifunctional catalysts. The instability of 1T‐MoS2 further impedes its applications for scaling up, calling an urgent need for simple synthesis to produce stable 1T‐MoS2. In this work, the challenge of 1T‐MoS2 synthesis is first addressed using a direct one‐step hydrothermal method by adopting ascorbic acid. 1T‐MoS2 with flower‐like morphology is obtained, and transition metals (Ni, Co, Fe) are simultaneously doped into 1T‐MoS2. Ni‐1T‐MoS2 achieves an enhanced bifunctional catalytic activity for both HER and OER in alkaline media, where the key role of Ni doping as single atom is proved to be essential for boosting HER/OER activity. Finally, a Ni‐1T‐MoS2||Ni‐1T‐MoS2 electrolyzer is fabricated, reaching a current density of 10 mA cm−2 at an applied cell voltage of only 1.54 V for overall water splitting.

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Section: Doi: 101002/smll202107238mentioning

confidence: 99%

Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Wang

Zhang

et al. 2022

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“…Figure S14e shows that the P-MoS 2 @CoP/CC catalyst has the largest C dl , demonstrating that the P-MoS 2 @CoP/CC catalyst has more effective active sites at the interface between P-MoS 2 and CoP in P-MoS 2 @CoP/CC, which synergistically enhances the intrinsic HER activity in acidic media. [36] Additionally, the study found that the catalyst could be continuously operated at À 100 mA cm À 2 for 80 h in 0.5 m H 2 SO 4 with almost no degradation ( Figure S15). The SEM images ( Figure S16) before and after the durability test reveal some changes in the morphology of the catalyst.…”

Section: Electrocatalytic Her Analysismentioning

confidence: 95%

Interface Engineering of Needle‐Like P‐Doped MoS₂/CoP Arrays as Highly Active and Durable Bifunctional Electrocatalyst for Overall Water Splitting

et al. 2021

ChemSusChem

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Developing a bifunctional water splitting catalyst with high efficiency and low cost are crucial in the electrolysis water industry. Here, we report a rational design and simple preparation method of MoS 2-based bifunctional electrocatalyst on carbon cloth (CC). The optimized P-doped MoS 2 @CoP/CC catalyst presents low overpotentials for the hydrogen (HER) and oxygen evolution reactions (OER) of 64 and 282 mV in alkaline solution as well as 72 mV HER overpotential in H 2 SO 4 at a current density of 10 mA cm À 2. Furthermore, P-MoS 2 @CoP/CC as a bifunctional catalyst delivered relatively low cell voltages of 1.83 and 1.97 V at high current densities of 500 and mA cm À 2 in 30 % KOH. The two-electrode system showed a remarkable stability for 30 h, even outperformed the benchmark RuO 2 j j Pt/ C catalyst. The excellent electrochemical performance can be credited to the unique microstructure, high surface area, and the synergy between metal species. This study presents a possible alternative for noble metal-based catalysts to overcome the challenges of industrial applications.

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“…16–19 Among various nanostructures, NWAs possessing large specific surface area and ample open active channels may promote mass transport in the catalytic reaction. 20–26 At the same time, the tedious manufacturing process of the electrode is avoided by direct application of NWAs as conductive substrates, which results in a significant enhancement of activities. 27–29 To the best of our knowledge, although considerable progress has been made for optimizing their electrocatalytic performance, it still remains a tremendous challenge to construct Mo-based NWAs because there is negligible report on clear and definite 1D Mo-based NWAs.…”

Section: Introductionmentioning

confidence: 99%

Ru doped molybdenum-based nanowire arrays for efficient hydrogen evolution over a broad pH range

Yang

Duan-lin

et al. 2022

Dalton Trans.

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Interface construction of P-Substituted MoS2 as efficient and robust electrocatalyst for alkaline hydrogen evolution reaction

Cited by 90 publications

References 45 publications

Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Interface Engineering of Needle‐Like P‐Doped MoS₂/CoP Arrays as Highly Active and Durable Bifunctional Electrocatalyst for Overall Water Splitting

Ru doped molybdenum-based nanowire arrays for efficient hydrogen evolution over a broad pH range

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Interface construction of P-Substituted MoS2 as efficient and robust electrocatalyst for alkaline hydrogen evolution reaction

Cited by 90 publications

References 45 publications

Direct Synthesis of Stable 1T‐MoS2 Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Direct Synthesis of Stable 1T‐MoS2 Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Interface Engineering of Needle‐Like P‐Doped MoS2/CoP Arrays as Highly Active and Durable Bifunctional Electrocatalyst for Overall Water Splitting

Ru doped molybdenum-based nanowire arrays for efficient hydrogen evolution over a broad pH range

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Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Direct Synthesis of Stable 1T‐MoS₂ Doped with Ni Single Atoms for Water Splitting in Alkaline Media

Interface Engineering of Needle‐Like P‐Doped MoS₂/CoP Arrays as Highly Active and Durable Bifunctional Electrocatalyst for Overall Water Splitting