Facile Synthesis of Medium-Entropy Metal Sulfides as High-Efficiency Electrocatalysts toward Oxygen Evolution Reaction

Lei Wu; Xiaoping Shen; Zhenyuan JiJiaren YuanShaokang YangGuoxing ZhuLizhi ChenLirong KongHongbo Zhou

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Facile Synthesis of Medium-Entropy Metal Sulfides as High-Efficiency Electrocatalysts toward Oxygen Evolution Reaction

机译：Facile Synthesis of Medium-Entropy Metal Sulfides as High-Efficiency Electrocatalysts toward Oxygen Evolution Reaction

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Developing highly efficient and durable electrocatalysts toward oxygenevolution reaction (OER) is an urgent demand to produce clean hydrogenenergy. In this study, a series of medium-entropy metal sulfides (MEMS)of (NiFeCoX)_3S_4 (where X = Mn, Cr, Zn) are synthesized by a facile onepotsolvothermal strategy using molecular precursors. Benefiting fromthe multiple-metal synergistic effect and the low crystallinity, these MEMSshow significantly enhanced electrocatalytic OER activity compared with thebinary-metal (NiFe)_3S_4 and ternary-metal (NiFeCo)_3S_4 counterparts. Especially,(NiFeCoMn)_3S_4 delivers a low overpotential of 289 mV at 10 mA cm~(?2),a decent Tafel slope of 75.6 mV dec~(?1) and robust catalytic stability in alkalinemedium, outperforming the costly IrO_2 benchmark electrocatalyst and themajority of the reported metal sulfide-based electrocatalysts until now. TheseMEMS with facile synthesis and excellent electrocatalytic performance bring agreat opportunity to design desirable electrocatalysts for practical application.

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《Advanced functional materials》 |2023年第3期|2208170.1-2208170.10|共10页
作者
Lei Wu; Xiaoping Shen; Zhenyuan JiJiaren YuanShaokang YangGuoxing ZhuLizhi ChenLirong KongHongbo Zhou;
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School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013, P. R. China;

School of Physics and Materials ScienceNanchang UniversityNanchang 330031, P. R. China, School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013, P. R. China;

School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013, P. R. China;

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正文语种英语
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electrocatalysts; medium-entropy metal sulfides; molecular precursor; oxygen evolution reactions; synergistic effects;

Facile Synthesis of Medium-Entropy Metal Sulfides as High-Efficiency Electrocatalysts toward Oxygen Evolution Reaction

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