{"title":"协同界面耦合增强了锚定在3D石墨烯上的Co3O4纳米团簇上的低负载Pt,用于高效的碱性HER催化","authors":"Jindou Huang , Bowen Ren , Ping Li, Xianglong Ma, Qiushi Wang","doi":"10.1016/j.jpowsour.2025.236695","DOIUrl":null,"url":null,"abstract":"<div><div>Large-scale hydrogen production can be effectively achieved through alkaline water electrolysis. However, the hydrogen evolution reaction currently faces the significant challenge of the lack of affordable substitutes for platinum (Pt)-based electrocatalysts. Reducing the platinum content while maintaining efficiency is a formidable task. In this study, we present a highly efficient and stable electrocatalyst composed of low-loading Pt nanoparticles (approximately 5.2 μg cm<sup>−2</sup>) dispersed on cobalt oxide nanoclusters (Co<sub>3</sub>O<sub>4</sub>)-modified three-dimensional graphene. This catalyst exhibits a low overpotential of only 82 mV at a current density of 10 mA cm<sup>−2</sup>, along with stability over 40 h. Density functional theory calculations reveal that the introduction of low-loading Pt into Co<sub>3</sub>O<sub>4</sub> leads to a synergistic interface coupling between the Pt (111) and Co<sub>3</sub>O<sub>4</sub> (110) facets, significantly enhancing water adsorption and hydrogen dissociation kinetics. This, in turn, facilitates hydrogen production and reduces the energy required for the potential-determining step. This work provides a promising pathway for the development of stable, low-loading noble metal-based electrocatalysts with substantial potential for sustainable energy applications.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"640 ","pages":"Article 236695"},"PeriodicalIF":7.9000,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic interface coupling enhances low-loading Pt on Co3O4 nanoclusters anchored to 3D graphene for highly efficient alkaline HER catalysis\",\"authors\":\"Jindou Huang , Bowen Ren , Ping Li, Xianglong Ma, Qiushi Wang\",\"doi\":\"10.1016/j.jpowsour.2025.236695\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Large-scale hydrogen production can be effectively achieved through alkaline water electrolysis. However, the hydrogen evolution reaction currently faces the significant challenge of the lack of affordable substitutes for platinum (Pt)-based electrocatalysts. Reducing the platinum content while maintaining efficiency is a formidable task. In this study, we present a highly efficient and stable electrocatalyst composed of low-loading Pt nanoparticles (approximately 5.2 μg cm<sup>−2</sup>) dispersed on cobalt oxide nanoclusters (Co<sub>3</sub>O<sub>4</sub>)-modified three-dimensional graphene. This catalyst exhibits a low overpotential of only 82 mV at a current density of 10 mA cm<sup>−2</sup>, along with stability over 40 h. Density functional theory calculations reveal that the introduction of low-loading Pt into Co<sub>3</sub>O<sub>4</sub> leads to a synergistic interface coupling between the Pt (111) and Co<sub>3</sub>O<sub>4</sub> (110) facets, significantly enhancing water adsorption and hydrogen dissociation kinetics. This, in turn, facilitates hydrogen production and reduces the energy required for the potential-determining step. This work provides a promising pathway for the development of stable, low-loading noble metal-based electrocatalysts with substantial potential for sustainable energy applications.</div></div>\",\"PeriodicalId\":377,\"journal\":{\"name\":\"Journal of Power Sources\",\"volume\":\"640 \",\"pages\":\"Article 236695\"},\"PeriodicalIF\":7.9000,\"publicationDate\":\"2025-03-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Power Sources\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0378775325005312\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Power Sources","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378775325005312","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
碱水电解可以有效地实现大规模制氢。然而,析氢反应目前面临着铂基电催化剂缺乏可负担的替代品的重大挑战。在保持效率的同时降低铂含量是一项艰巨的任务。在这项研究中,我们提出了一种高效稳定的电催化剂,由分散在氧化钴纳米团簇(Co3O4)修饰的三维石墨烯上的低负载铂纳米粒子(约5.2 μg cm−2)组成。该催化剂在电流密度为10 mA cm−2时的过电位仅为82 mV,并具有超过40 h的稳定性。密度泛函理论计算表明,将低负荷Pt引入Co3O4导致Pt(111)和Co3O4(110)面之间的协同界面耦合,显著增强了水吸附和氢解离动力学。这反过来又促进了氢气的生产,减少了决定电位步骤所需的能量。这项工作为开发稳定、低负荷的贵金属基电催化剂提供了一条有希望的途径,具有可持续能源应用的巨大潜力。
Synergistic interface coupling enhances low-loading Pt on Co3O4 nanoclusters anchored to 3D graphene for highly efficient alkaline HER catalysis
Large-scale hydrogen production can be effectively achieved through alkaline water electrolysis. However, the hydrogen evolution reaction currently faces the significant challenge of the lack of affordable substitutes for platinum (Pt)-based electrocatalysts. Reducing the platinum content while maintaining efficiency is a formidable task. In this study, we present a highly efficient and stable electrocatalyst composed of low-loading Pt nanoparticles (approximately 5.2 μg cm−2) dispersed on cobalt oxide nanoclusters (Co3O4)-modified three-dimensional graphene. This catalyst exhibits a low overpotential of only 82 mV at a current density of 10 mA cm−2, along with stability over 40 h. Density functional theory calculations reveal that the introduction of low-loading Pt into Co3O4 leads to a synergistic interface coupling between the Pt (111) and Co3O4 (110) facets, significantly enhancing water adsorption and hydrogen dissociation kinetics. This, in turn, facilitates hydrogen production and reduces the energy required for the potential-determining step. This work provides a promising pathway for the development of stable, low-loading noble metal-based electrocatalysts with substantial potential for sustainable energy applications.
期刊介绍:
The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells.
Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include:
• Portable electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supply (UPS) systems
• Storage of renewable energy
• Satellites and deep space probes
• Boats and ships, drones and aircrafts
• Wearable energy storage systems