Atomically Dispersed Copper–Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction

Chao, Tingting; Luo, Xuan; Chen, Wenxing; Jiang, Bin; Ge, Jingjie; Lin, Yue; Wu, Geng; Wang, Xiaoqian; Hu, Yanjun; Zhuang, Zhongbin; Wu, Yuen; Hong, Xun; Li, Yadong

doi:10.1002/anie.201709803

Cited by 253 publications

(174 citation statements)

References 27 publications

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“…NG@IrCo/NG‐1150‐8 has shown overpotential of 34 mV vs RHE. This value is close to that of Pt40 wt%/C catalyst which is in accordance with that of previous works . Though their overpotential at current density of 10 mA ⋅ cm −2 has been got to more close, their activity still mainly follows that in alkaline solution.…”

Section: Resultssupporting

confidence: 91%

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Zhang

et al. 2019

ChemCatChem

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Electrocatalysts have been used to split water into hydrogen and oxygen for their advantages in clean energy technologies. To reduce cost and enhance stability of electrocatalysts, intensive works have been done in recent decades. Although research on noble‐metal free electrocatalysts has achieved great progress, their full water splitting performance is still incomparable to that of noble metal based catalysts. For this reason, reducing content of noble metal in catalysts is a more practical way. In this work, we report our recent progress on developing bifunctional electrocatalyst based on nitrogen‐doped graphene chainmail wrapped IrCo alloy particles on nitrogen‐doped graphene (NG@IrCo/NG). Benefited from strong interaction among iridium, cobalt and nitrogen‐doped graphene, impressively high electrocatalytic activity of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in both acid and alkaline solutions, which are comparable to commercially used Pt/C and IrO2 electrocatalysts respectively, is found. Catalyst with the structure of nitrogen doped chainmail wrapping on metal core is found to have highly stable full water splitting performance.

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Section: Resultssupporting

confidence: 91%

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Zhang

et al. 2019

ChemCatChem

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“…Owing to the different coordination environments, the average coordination number of Ru‐Sr in RSRO is 1.5, which considerably different from that for SrRuO 3 (7.3). In addition, possibly due to the unsaturation of Ru in RSRO, the bond length of 1.97 Å for the Ru‐O in the first scattering shell is somewhat shorter than that of RuO 2 and SrRuO 3 . The above results also testified a strong interaction between RuO 2 and SrRuO 3 .…”

mentioning

confidence: 75%

Identifying the Activation Mechanism and Boosting Electrocatalytic Activity of Layered Perovskite Ruthenate

Wang

Lü

et al. 2020

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SrRuO3 as a rare conductive perovskite ruthenate has attracted increasing attention for application in energy conversion. Here, the electrocatalytic activity for the hydrogen evolution reaction (HER) of thermally synthesized layered SrRuO3 is investigated and shows a considerable activation during cathodic polarization in alkaline solution. The analysis demonstrates the electrode activation is caused by the increased hydrophilicity of SrRuO3 surface, revealing the influence of the surface properties on HER performance. For further improving the catalytic activity of perovskite ruthenate, the RuO2/SrRuO3 (RSRO) heterostructure is fabricated in situ by reducing the thermal decomposition temperature of 1000 °C for SrRuO3 to 600 °C. The appropriate lattice parameter of SrRuO3 ensures a good lattice match, which results in a strong interaction between SrRuO3 and RuO2. Hence, the RSRO substantially outperforms the corresponding single‐component oxides. In addition, the increased active sites induced by the rapid improvement of hydrophilicity of RSRO surface further highlight its structural advantage for catalytic hydrogen generation. The experimental and theoretical computation results consistently validate the positive synergistic effect among SrRuO3 and RuO2 in tuning the atomic and electronic configuration.

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“…These computational results are in good agreement with the XPS and XAFS analyses. [21,40] Pt with poor OER activity is inefficient as a stand-alone catalyst for water splitting due to electrochemically induced oxidization and quick formation of inactive oxide layers. Thus, the adsorbed hydrogen binds to Pt/CoS 2 neither too weakly nor too strongly, overall promoting high activity toward the HER.…”

Section: Discussionmentioning

confidence: 99%

Ultrafine Pt Nanoparticle‐Decorated Pyrite‐Type CoS₂Nanosheet Arrays Coated on Carbon Cloth as a Bifunctional Electrode for Overall Water Splitting

Han

Deng

et al. 2018

Advanced Energy Materials

311

177

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To improve the utilization efficiency of precious metals, metal‐supported materials provide a direction for fabricating highly active and stable heterogeneous catalysts. Herein, carbon cloth (CC)‐supported Earth‐abundant CoS2 nanosheet arrays (CoS2/CC) are presented as ideal substrates for ultrafine Pt deposition (Pt‐CoS2/CC) to achieve remarkable performance toward the hydrogen and oxygen evolution reactions (HER/OER) in alkaline solutions. Notably, the Pt‐CoS2/CC hybrid delivers an overpotential of 24 mV at 10 mA cm−2 and a mass activity of 3.89 A Ptmg−1, which is 4.7 times higher than that of commercial Pt/C, at an overpotential of 130 mV for catalyzing the HER. An alkali‐electrolyzer using Pt‐CoS2/CC as a bifunctional electrode enables a water‐splitting current density of 10 mA cm−2 at a low voltage of 1.55 V and can sustain for more than 20 h, which is superior to that of the state‐of‐the‐art Pt/C+RuO2 catalyst. Further experimental and theoretical simulation studies demonstrate that strong electronic interaction between Pt and CoS2 synergistically optimize hydrogen adsorption/desorption behaviors and facilitate the in situ generation of OER active species, enhancing the overall water‐splitting performance. This work highlights the regulation of interfacial and electronic synergy in pursuit of highly efficient and durable supported catalysts for hydrogen and oxygen electrocatalytic applications.

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Atomically Dispersed Copper–Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction

Cited by 253 publications

References 27 publications

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Identifying the Activation Mechanism and Boosting Electrocatalytic Activity of Layered Perovskite Ruthenate

Ultrafine Pt Nanoparticle‐Decorated Pyrite‐Type CoS₂Nanosheet Arrays Coated on Carbon Cloth as a Bifunctional Electrode for Overall Water Splitting

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Atomically Dispersed Copper–Platinum Dual Sites Alloyed with Palladium Nanorings Catalyze the Hydrogen Evolution Reaction

Cited by 253 publications

References 27 publications

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting

Identifying the Activation Mechanism and Boosting Electrocatalytic Activity of Layered Perovskite Ruthenate

Ultrafine Pt Nanoparticle‐Decorated Pyrite‐Type CoS2Nanosheet Arrays Coated on Carbon Cloth as a Bifunctional Electrode for Overall Water Splitting

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Ultrafine Pt Nanoparticle‐Decorated Pyrite‐Type CoS₂Nanosheet Arrays Coated on Carbon Cloth as a Bifunctional Electrode for Overall Water Splitting