Tip and heterogeneous effects co-contribute to a boosted performance and stability in zinc air battery

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 662, P. 676 - 685

Published: Feb. 15, 2024

Language: Английский

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A superior zinc-air battery performance achieved by CoO/Fe₃O₄ heterostructured nanosheets

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(44), P. 5747 - 5750

Published: Jan. 1, 2024

CoO/Fe 3 O 4 nanosheets exhibit a superior rechargeable zinc-air battery (ZAB) performance of 276 mW cm −2 and stability over 600 h. The all-solid-state ZAB also affords high power density 107 .

Language: Английский

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Microwave-assisted exploration of the electron configuration-dependent electrocatalytic urea oxidation activity of 2D porous NiCo2O4 spinel

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 91, P. 226 - 235

Published: Dec. 28, 2023

Urea holds promise as an alternative water-oxidation substrate in electrolytic cells. High-valence nickel-based spinel, especially after heteroatom doping, excels urea oxidation reactions (UOR). However, traditional spinel synthesis methods with prolonged high-temperature lack kinetic precision, hindering the balance between controlled doping and highly active two-dimensional (2D) porous structures design. This significantly impedes identification of electron configuration-dependent sites doped 2D spinels. Herein, we present a microwave shock method for preparation NiCo2O4 spinel. Utilizing transient on-off property pulses precise structural design, non-metal (boron, phosphorus, sulfur) distinct extranuclear disparities serves straightforward examples investigation. Precise tuning lattice parameter reveals impact covalent bond strength on stability. The introduced defect levels induce unpaired d-electrons transition metals, enhancing adsorption electron-donating amino groups molecules. Simultaneously, Bode plots confirm mechanism rapid migration caused by reduced band gaps UOR activity. prepared phosphorus-doped NiCo2O4, optimal configuration control, outperforms most reported modification strategy advances understanding theoretical structure-activity mechanisms high-performance spinels UOR.

Language: Английский

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V‐Doping Strategy Induces the Construction of the Functionally Complementary Ru₂P/V‐RuP₄ Heterostructures to Achieve Amperometric Current Density for HER

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: March 13, 2024

Abstract It is a great challenge to induce the formation of RuP 4 phase and realize construction metal‐rich phase/phosphorus‐rich phase‐ruthenium phosphide heterostructure by directional regulation proportion P metal atoms. The ultra‐high conductivity Ru 2 excellent ability V‐doped absorb/desorb H* are confirmed density functional theory (DFT) calculations, which laid theoretical foundation for unique P/V‐RuP structure accelerate HER reaction kinetics. This work innovatively uses V‐doping strategy with high intrinsic activity, finally construct V‐Ru x y nanosheets rich Ru/Ru heterostructures. Thanks optimization V dopants, catalyst only needs 180 mV obtain an industrial‐grade current 1 A cm −2 . In summary, this provides new idea design performance ruthenium‐based catalysts.

Language: Английский

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Interfacial electronic modulation enables a robust methanol oxidation

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 59, P. 369 - 374

Published: Feb. 7, 2024

Language: Английский

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Electrochemical Leaching of Ni Dopants in IrRu Alloy Electrocatalyst Boosts Overall Water Splitting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 16, 2024

Abstract The commercialization of water‐splitting technology strongly relies on the stable and high‐performance electrocatalyst for hydrogen oxygen evolution reactions (HER‐OER). In this work, nickel dopants in IrRu alloyed acidic water splitting activity are investigated. incorporation induces more atoms coordinating with Ir/Ru facilitating formation *OOH species via nucleophilic attack by H 2 O. Additionally, a fast surface reconstruction is achieved due to electrochemical dissolution Ni dopants; as result, incorporated, evidenced situ Raman spectroscopy impedance spectroscopy. Therefore, mass Ni@IrRu enhanced threefold than commercial IrO OER catalysis. Moreover, balance binding strength; only 609 mV overpotential demanded reach 1 A cm −2 HER polymer electrolyte membrane electrolyzer (PEMWE) test indicates 1.87 V required attain , 160 lower Pt/C‐IrO revealing its potential application PEMWE.

Language: Английский

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Regulating the atomic ratio of Pt/Ru to enhance CO anti-poisoning of Pt based electrocatalysts toward methanol oxidation reaction

Molecular Catalysis, Journal Year: 2024, Volume and Issue: 556, P. 113927 - 113927

Published: Feb. 7, 2024

Language: Английский

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Rapid one-step aqueous synthesis of porous PtAg wavy nanochains for methanol electrooxidation with a high CO-tolerance

Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 961, P. 118207 - 118207

Published: March 20, 2024

Language: Английский

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MOF-derived low Ru-loaded high entropy alloy as an efficient and durable self-supporting electrode in rechargeable liquid/flexible Zn-air batteries

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 671, P. 34 - 45

Published: May 21, 2024

Language: Английский

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Modulation in work function of CoTe as bifunctional electrocatalyst for rechargeable zinc air battery

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 672, P. 170 - 178

Published: June 1, 2024

Language: Английский

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