首页|Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

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Compared to conventional electrocatalytic water splitting,electrocatalytic ethanol oxidation reaction(EOR)along with hydrogen production is considered a more energy-efficient strategy.Herein,we pre-pared a type of novel quaternary alloy catalyst(PtAuCuNi@NF)that exhibits excellent activity for EOR(0.215 V at 10 mA cm-2)and hydrogen evolution reaction(HER)(7 mV at 10 mA cm-2).Experimental results demonstrated that both Cu and Ni modulated the electronic environment around Pt and Au.The electron-rich active center facilitates the rapid adsorption and dissociation of reactants and interme-diates for both EOR and HER.Impressively,in the ethanol-assisted overall water splitting(E-OWS),a cur-rent density of 10 mA cm-2 was achieved at 0.28 V.Moreover,an advanced acid-base self-powered system(A-Bsps)that can achieve a self-powered voltage of 0.59 V was assembled.Accordingly,the self-driven hydrogen production with zero external power supply was realized by integrating A-Bsps with the E-OWS equipment.The interesting results can provide a feasible strategy for designing and developing advanced nanoalloy-based materials for clean energy integration and use in various fields.

Pt-based alloyElectronic structureEthanol oxidationSelf-powered systemOverall water splitting

Hu Yao、Yinan Zheng、Xin Yu、Songjie Hu、Baolian Su、Xiaohui Guo

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Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education,The College of Chemistry and Materials Science,Northwest University,Xi'an 710069,Shaanxi,China

Department of Inorganic Chemistry,University of Namur,Bruxelles,B-5000 Namur,Belgium

Key projects of intergovernmental international cooperation in the Key R & D programs of the Ministry of Science and TechnolNational Science Funding Committee of China

2021YFE0115800U20A20250

2024

10.1016/j.jechem.2024.02.037

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.93(6)
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