Synthesis of
            <scp>
              MoS
              <sub>x</sub>
            </scp>
            /Ni‐metal‐organic framework‐74 composites as efficient electrocatalysts for hydrogen evolution reactions

Huu, Ha; Le, Quyet Van; Nguyen, Tuan Van; Huynh, Kim Anh; Tekalgne, Mahider; Tran, Vy Anh; Lee, Tae Hyung; Cho, Jin Hyuk; Shokouhimehr, Mohammadreza; Ahn, Sang Hyun; Jang, Ho Won; Kim, Soo Young

doi:10.1002/er.6385

Cited by 34 publications

(15 citation statements)

References 68 publications

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Section: Mof‐based Host–guest Composites For Electrocatalysismentioning

confidence: 99%

“…Most recently, Do et al followed host–guest chemistry using a simplistic solvothermal strategy to develop cost‐effective HER catalysts by combining amorphous molybdenum sulfide (MoS x ) and Ni‐MOF‐74 (Figure 13b,c). [ 70 ] They also suggested that NiMoS phases can lower the hydrogen adsorption energy on the catalysts, leading to an excellent hydrogen generation performance of the optimal MoS x /Ni‐MOF‐74 in acidic media (40 wt% MoS x , E onset = −114 mV and Tafel slope = 53.1 mV dec −1 ). Toward the OER process, Zhou and co‐workers recently constructed a series of single‐atom implanted 2D MOF‐HGCCs (labeled as Ni@HUST‐8) as efficient electrocatalysts for water oxidation in basic media, which exhibited better catalytic properties than commercial IrO 2 .…”

Section: Mof‐based Host–guest Composites For Electrocatalysismentioning

confidence: 99%

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Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

et al. 2021

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Electrocatalysis is at the heart of many significant chemical transformation processes and advanced clean energy technologies. Traditional noble/transition metal oxides are widely used as electrocatalysts; however, they often suffer from intrinsic disadvantages, including low atom utilization, small surface area, and unfavorable tunability. Metal–organic frameworks (MOFs), as a new family of catalytic materials, are attracting extensive attention due to their unique physicochemical properties. The tremendous pristine MOF‐based materials are created using various synthetic approaches and further used for important energy conversions. Herein, a systematic overview on the unique merits and the state‐of‐the‐art design of MOF‐based electrocatalysts is offered. This review also presents recent advances in the development of various pristine MOFs and MOF‐based host–guest composite catalysts for electrocatalysis (i.e., oxygen reduction reaction, hydrogen oxidation reaction, hydrogen evolution reaction, oxygen evolution reaction, and CO2 reduction reaction) and discusses the future challenges and opportunities in this emerging field.

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Section: Mof‐based Host–guest Composites For Electrocatalysismentioning

confidence: 99%

Section: Mof‐based Host–guest Composites For Electrocatalysismentioning

confidence: 99%

Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

et al. 2021

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“…The overpotentials at 10 mA/cm 2 increase in the order of Co-P-0.3 (143.85 mV) < Co-P-0.2 (167.11 mV) < Co-P-0.4 (171.59 mV) < Co-P-0.1 (227.38 mV) < Co-P-0.5 (280.89 mV) < Co-P-0.6 (345.98 mV) < Co (346.27 mV), exhibiting a volcano-like trend and showing the best HER performance for Co-P-0.3, that is, Co 94 P 6 . When compared with commercial Pt-based catalysts and others, the lowest overpotential of 143.85 mV in the case of Co-P-0.3 was still higher than those of Pt/C on Ti (14 mV), 32 Pt/C on CP (10 mV), 77 NiS 2 -Ni(OH) 2 (90 mV), 78 and MoS x /Ni-metalorganic framework-74 (114 mV) 79 but comparable to other non-PGM catalysts such as CoP (130 mV), 80 FeMoS (140 mV), 81 and N, P-dual-doped MoS 2 (147 mV) 82 and even better than [Mo 3 S 13 ] 2À (188 mV), 50 MoS 2 (190 mV), 83 NbS 2 (207 mV), 84 CoCu (342 mV), 27 and VS 2 (350 mV). 85 In addition, the Tafel slopes of each catalyst at the fourth cycle (Figure 5H) exhibit the same volcano-like trend, showing the lowest slope of 60.10 mV/dec for Co-P-0.3 (Co 94 P 6 ), which is comparable to results obtained previously for Co-P, that is, Tafel slopes from 45 to 82 mV/dec.…”

Section: Her Performance Of Acid-treated Catalystsmentioning

confidence: 84%

Acid‐durable, high‐performance cobalt phosphide catalysts for hydrogen evolution in proton exchange membrane water electrolysis

Yoon

Kim

et al. 2021

Int J Energy Res

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The cost of platinum group metal (PGM) catalysts is one of the major obstacles in commercializing proton exchange membrane water electrolyzers (PEMWEs).The non-PGM substituents are often more financially beneficial but low in activity and durability in the acidic environment. In this study, cobalt phosphide catalysts, which are promising non-PGM alternatives for the hydrogen evolution reaction (HER) and have enhanced durability and single-cell performance, were fabricated directly on carbon paper using the pulse electrodeposition method. As the dissolution potential (reported as -x vs saturated calomel electrode) of the pulse electrodeposition shifted in the positive direction, the P/Co ratio of the Co-P-x catalysts increased because of severe Co dissolution. Among the catalysts, Co-P-0.6, Co-P-0.5, and Co-P-0.4 (where the number indicates the negative dissolution potential) were rapidly degraded in acid, whereas Co-P-0.3, Co-P-0.2, and Co-P-0.1 showed high stability because of the relative amounts of CoP and Co 2 P phases. The acid-dissolved Co-P-0.3 catalyst showed the best half-cell performance (an overpotential of 143.85 mV at 10 mA/cm 2 ) and durability, and the P-Co and Co δ+ surface states are critical for its performance. Single-cell tests using the Co-P-0.3 cathode revealed its remarkable performance of 1.89 A/cm 2 at 2.0 V cell , indicating its promise as a non-PGM cathode material for PEMWEs.

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“…The as‐fabricated catalyst afforded a desirable Tafel slope of 53.1 mV dec −1 and a low onset potential of −114 mV in acidic media, attributed to the ability of the newly formed NiMoS phase to cooperatively reduce the hydrogen adsorption energy of the electrocatalyst. [ 121 ] In addition, Ni‐MOFs can form a carbon‐based framework through high‐temperature reduction. The presence of metals can also promote graphitization of the carbon matrix.…”

Section: Recent Progressmentioning

confidence: 99%

Applications of Nickel‐Based Electrocatalysts for Hydrogen Evolution Reaction

Huo

Jin

Jiang

et al. 2022

Adv Energy and Sustain Res

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The desire to exploit clean and sustainable energy sources with high gravimetric energy density has greatly inspired the exploration of hydrogen energy as an affordable alternative to fossil energy. Electrocatalytic water splitting is an efficient method for the low‐cost production of pure H2, but the use of platinum (Pt)‐like active electrocatalysts for the hydrogen evolution reaction (HER) remains necessary. In attempts to replace high‐value, scarce Pt catalysts, nickel‐based materials are being developed, as earth‐abundant HER electrocatalysts. Recently, a number of advanced nickel (Ni)‐based catalysts have been developed by rational synthesis strategies, including morphology control, structure tailoring, and interface engineering, significantly improving the HER performance. This review summarizes recent achievements in the application of Ni‐based HER electrocatalysts and demonstrates the advantages of each category in enhancing the HER performance. The current progress in the theory of water evolution and various modern techniques for characterizing catalysts are also reviewed, along with the rational design of Ni‐based nanostructure catalysts. Finally, the challenges in the practical applications of Ni‐based HER catalysts are highlighted.

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Synthesis of MoS _x /Ni‐metal‐organic framework‐74 composites as efficient electrocatalysts for hydrogen evolution reactions

Cited by 34 publications

References 68 publications

Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

Acid‐durable, high‐performance cobalt phosphide catalysts for hydrogen evolution in proton exchange membrane water electrolysis

Applications of Nickel‐Based Electrocatalysts for Hydrogen Evolution Reaction

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Synthesis of MoS x /Ni‐metal‐organic framework‐74 composites as efficient electrocatalysts for hydrogen evolution reactions

Cited by 34 publications

References 68 publications

Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

Metal–Organic Frameworks for Electrocatalysis: Beyond Their Derivatives

Acid‐durable, high‐performance cobalt phosphide catalysts for hydrogen evolution in proton exchange membrane water electrolysis

Applications of Nickel‐Based Electrocatalysts for Hydrogen Evolution Reaction

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Synthesis of MoS _x /Ni‐metal‐organic framework‐74 composites as efficient electrocatalysts for hydrogen evolution reactions