{"title":"多孔碳框架上的化学键合 Co2P-Cu3P 异质结构纳米粒子作为高效氢气进化/氧化电催化剂","authors":"","doi":"10.1016/j.seppur.2024.129863","DOIUrl":null,"url":null,"abstract":"<div><div>Exploring economical and efficient catalysts for hydrogen evolution/oxidation reaction (HER/HOR) is very crucial for water splitting and fuel-cells applications. Constructing transition metal phosphides heterostructures is a representative strategy to accelerate kinetics. Herein, we designed Co<sub>2</sub>P-Cu<sub>3</sub>P heterostructure particles on a porous carbon skeleton (Co<sub>2</sub>P-Cu<sub>3</sub>P/C) for the HER/HOR. The Co<sub>2</sub>P-Cu<sub>3</sub>P/C possesses a suitable specific surface area, an optimized electronic structure, and strong chemical bridge bonds (C-P-Co(Cu)) between porous carbon skeleton and Co<sub>2</sub>P-Cu<sub>3</sub>P nanoparticles, resulting in a substantial increase in its HER/HOR activity and enhanced stability. Therefore, Co<sub>2</sub>P-Cu<sub>3</sub>P/C only requires a low overpotential of 90 mV to reach a current density of 10 mA cm<sup>−2</sup> with a low Tafel slope of 53.5 mV dec<sup>-1</sup>, and it can maintain the HER over long-term (72 h). Moreover, Co<sub>2</sub>P-Cu<sub>3</sub>P/C also has potential in applications due to its excellent HER performance. Furthermore, the Co<sub>2</sub>P-Cu<sub>3</sub>P/C exhibits a superior intrinsic activity of 1.19 mA cm<sup>−2</sup> and excellent durability (500 min) for the HOR. Density functional theory calculations indicate that the interfacial effect between Co<sub>2</sub>P and Cu<sub>3</sub>P at the heterogeneous interfaces contributes to the enhanced HER/HOR performance.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Chemically bonded Co2P-Cu3P heterostructure nanoparticles on porous carbon framework as efficient hydrogen evolution/oxidation electrocatalysts\",\"authors\":\"\",\"doi\":\"10.1016/j.seppur.2024.129863\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Exploring economical and efficient catalysts for hydrogen evolution/oxidation reaction (HER/HOR) is very crucial for water splitting and fuel-cells applications. Constructing transition metal phosphides heterostructures is a representative strategy to accelerate kinetics. Herein, we designed Co<sub>2</sub>P-Cu<sub>3</sub>P heterostructure particles on a porous carbon skeleton (Co<sub>2</sub>P-Cu<sub>3</sub>P/C) for the HER/HOR. The Co<sub>2</sub>P-Cu<sub>3</sub>P/C possesses a suitable specific surface area, an optimized electronic structure, and strong chemical bridge bonds (C-P-Co(Cu)) between porous carbon skeleton and Co<sub>2</sub>P-Cu<sub>3</sub>P nanoparticles, resulting in a substantial increase in its HER/HOR activity and enhanced stability. Therefore, Co<sub>2</sub>P-Cu<sub>3</sub>P/C only requires a low overpotential of 90 mV to reach a current density of 10 mA cm<sup>−2</sup> with a low Tafel slope of 53.5 mV dec<sup>-1</sup>, and it can maintain the HER over long-term (72 h). Moreover, Co<sub>2</sub>P-Cu<sub>3</sub>P/C also has potential in applications due to its excellent HER performance. Furthermore, the Co<sub>2</sub>P-Cu<sub>3</sub>P/C exhibits a superior intrinsic activity of 1.19 mA cm<sup>−2</sup> and excellent durability (500 min) for the HOR. Density functional theory calculations indicate that the interfacial effect between Co<sub>2</sub>P and Cu<sub>3</sub>P at the heterogeneous interfaces contributes to the enhanced HER/HOR performance.</div></div>\",\"PeriodicalId\":427,\"journal\":{\"name\":\"Separation and Purification Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Separation and Purification Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1383586624036025\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586624036025","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Chemically bonded Co2P-Cu3P heterostructure nanoparticles on porous carbon framework as efficient hydrogen evolution/oxidation electrocatalysts
Exploring economical and efficient catalysts for hydrogen evolution/oxidation reaction (HER/HOR) is very crucial for water splitting and fuel-cells applications. Constructing transition metal phosphides heterostructures is a representative strategy to accelerate kinetics. Herein, we designed Co2P-Cu3P heterostructure particles on a porous carbon skeleton (Co2P-Cu3P/C) for the HER/HOR. The Co2P-Cu3P/C possesses a suitable specific surface area, an optimized electronic structure, and strong chemical bridge bonds (C-P-Co(Cu)) between porous carbon skeleton and Co2P-Cu3P nanoparticles, resulting in a substantial increase in its HER/HOR activity and enhanced stability. Therefore, Co2P-Cu3P/C only requires a low overpotential of 90 mV to reach a current density of 10 mA cm−2 with a low Tafel slope of 53.5 mV dec-1, and it can maintain the HER over long-term (72 h). Moreover, Co2P-Cu3P/C also has potential in applications due to its excellent HER performance. Furthermore, the Co2P-Cu3P/C exhibits a superior intrinsic activity of 1.19 mA cm−2 and excellent durability (500 min) for the HOR. Density functional theory calculations indicate that the interfacial effect between Co2P and Cu3P at the heterogeneous interfaces contributes to the enhanced HER/HOR performance.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.