Highly Open Phosphorized PtNi Nanohexapod/N‐doped Graphene Aerogel for High‐Performance Alkaline Hydrogen Evolution

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-11-28 DOI:10.1002/aenm.202404684

Jing Yang, Jianlan Wang, René Hübner, Xingyu Tao, Yansong Ren, Zhikun Zheng, Wei Liu

{"title":"Highly Open Phosphorized PtNi Nanohexapod/N‐doped Graphene Aerogel for High‐Performance Alkaline Hydrogen Evolution","authors":"Jing Yang, Jianlan Wang, René Hübner, Xingyu Tao, Yansong Ren, Zhikun Zheng, Wei Liu","doi":"10.1002/aenm.202404684","DOIUrl":null,"url":null,"abstract":"Developing cost‐effective, high‐efficiency, and stable electrocatalysts for the hydrogen evolution reaction (HER) in alkaline electrolytes is of critical importance for realizing renewable hydrogen technologies. However, the sluggish HER kinetics and unsatisfied stability remain critical challenges for their practical applications. Herein, a hierarchically porous phosphorized Pt‐Ni nanohexapod/N‐doped graphene aerogel (P‐PtNiNH/NGA) constructed by an oxidation‐phosphorization‐controlled reconfiguration strategy is presented. It enables fast water dissociation kinetics for an abundant supply of hydrogen ions, strong electron interaction for optimal intermediate adsorption, and an excellent anchoring effect of the NGA to avoid the aggregation and Ostwald ripening of the PtNiNHs, thus exhibiting superior activity and exceptional stability toward alkaline HER. The P‐Pt1Ni2NH/NGA exhibits an ultralow overpotential of 15 mV at a current density of 10 mA cm−2, a low Tafel slope of 37 mV dec−1, and long‐term stability, which are superior to commercial Pt/C. Moreover, the P‐Pt1Ni2NH/NGA shows a high mass activity of 13.4 mA µg−1 and a large TOF value of 13.5 s−1 at an overpotential of 100 mV, which are 8.8 times and 9.0 times higher than commercial Pt/C (under the same Pt loading of ≈9.1 µg cm−2). This work is of high inspiration for catalyst design to obtain ideal alkaline HER performance.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"84 1","pages":""},"PeriodicalIF":24.4000,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/aenm.202404684","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Developing cost‐effective, high‐efficiency, and stable electrocatalysts for the hydrogen evolution reaction (HER) in alkaline electrolytes is of critical importance for realizing renewable hydrogen technologies. However, the sluggish HER kinetics and unsatisfied stability remain critical challenges for their practical applications. Herein, a hierarchically porous phosphorized Pt‐Ni nanohexapod/N‐doped graphene aerogel (P‐PtNiNH/NGA) constructed by an oxidation‐phosphorization‐controlled reconfiguration strategy is presented. It enables fast water dissociation kinetics for an abundant supply of hydrogen ions, strong electron interaction for optimal intermediate adsorption, and an excellent anchoring effect of the NGA to avoid the aggregation and Ostwald ripening of the PtNiNHs, thus exhibiting superior activity and exceptional stability toward alkaline HER. The P‐Pt1Ni2NH/NGA exhibits an ultralow overpotential of 15 mV at a current density of 10 mA cm−2, a low Tafel slope of 37 mV dec−1, and long‐term stability, which are superior to commercial Pt/C. Moreover, the P‐Pt1Ni2NH/NGA shows a high mass activity of 13.4 mA µg−1 and a large TOF value of 13.5 s−1 at an overpotential of 100 mV, which are 8.8 times and 9.0 times higher than commercial Pt/C (under the same Pt loading of ≈9.1 µg cm−2). This work is of high inspiration for catalyst design to obtain ideal alkaline HER performance.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.