Jie Liang, Zixiao Li, Min Zhang, Hefeng Wang, Zhengwei Cai, Yongsong Luo, Fengming Luo, Tongwei Wu, Yongchao Yao, Bo Tang, Xuping Sun
{"title":"无定形磷酸盐为碱性析氢电催化调整局部质子供应","authors":"Jie Liang, Zixiao Li, Min Zhang, Hefeng Wang, Zhengwei Cai, Yongsong Luo, Fengming Luo, Tongwei Wu, Yongchao Yao, Bo Tang, Xuping Sun","doi":"10.1002/adma.202503660","DOIUrl":null,"url":null,"abstract":"Hydrogen (H<sub>2</sub>) is irreplaceable as a feedstock in varied industrial scenarios, and alkaline water electrolysis allows for H<sub>2</sub> production without costly proton exchange membrane and noble metals with limited reserves. However, alkaline solution is devoid of directly available protons, leading to suboptimal electrochemical H<sub>2</sub>-evolving kinetics even on catalysts with high intrinsic activities like CoP. On the other hand, high local acidity (i.e., superfluous protons) can lead to undesirable catalyst corrosion and active site blocking by excessive hydrogen coverage. Herein, a “cobalt phosphate-clothed-CoP (CoPi@CoP)” nanoarray catalyst is developed for proof of concept to explore a possible proton supply design principle. The nanometer-thick amorphous CoPi appears to serve multiple functions: facilitating water dissociation/H–O cleavage, buffering excess protons, and accelerating proton transfer/donation, thus optimizing the local proton supply to H-consuming sites. As expected, CoPi@CoP demonstrates state-of-the-art hydrogen evolution reaction performance in alkaline electrolytes, surpassing that of intrinsically active CoP. Online differential mass spectrometry, dynamic potential decay transients, spectroscopy data, and theoretical calculations reveal possible (atomic scale) reaction mechanisms.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"25 1","pages":""},"PeriodicalIF":27.4000,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Amorphous Phosphates Tailor Local Proton Supply for Alkaline Hydrogen Evolution Electrocatalysis\",\"authors\":\"Jie Liang, Zixiao Li, Min Zhang, Hefeng Wang, Zhengwei Cai, Yongsong Luo, Fengming Luo, Tongwei Wu, Yongchao Yao, Bo Tang, Xuping Sun\",\"doi\":\"10.1002/adma.202503660\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Hydrogen (H<sub>2</sub>) is irreplaceable as a feedstock in varied industrial scenarios, and alkaline water electrolysis allows for H<sub>2</sub> production without costly proton exchange membrane and noble metals with limited reserves. However, alkaline solution is devoid of directly available protons, leading to suboptimal electrochemical H<sub>2</sub>-evolving kinetics even on catalysts with high intrinsic activities like CoP. On the other hand, high local acidity (i.e., superfluous protons) can lead to undesirable catalyst corrosion and active site blocking by excessive hydrogen coverage. Herein, a “cobalt phosphate-clothed-CoP (CoPi@CoP)” nanoarray catalyst is developed for proof of concept to explore a possible proton supply design principle. The nanometer-thick amorphous CoPi appears to serve multiple functions: facilitating water dissociation/H–O cleavage, buffering excess protons, and accelerating proton transfer/donation, thus optimizing the local proton supply to H-consuming sites. As expected, CoPi@CoP demonstrates state-of-the-art hydrogen evolution reaction performance in alkaline electrolytes, surpassing that of intrinsically active CoP. Online differential mass spectrometry, dynamic potential decay transients, spectroscopy data, and theoretical calculations reveal possible (atomic scale) reaction mechanisms.\",\"PeriodicalId\":114,\"journal\":{\"name\":\"Advanced Materials\",\"volume\":\"25 1\",\"pages\":\"\"},\"PeriodicalIF\":27.4000,\"publicationDate\":\"2025-06-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/adma.202503660\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adma.202503660","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Amorphous Phosphates Tailor Local Proton Supply for Alkaline Hydrogen Evolution Electrocatalysis
Hydrogen (H2) is irreplaceable as a feedstock in varied industrial scenarios, and alkaline water electrolysis allows for H2 production without costly proton exchange membrane and noble metals with limited reserves. However, alkaline solution is devoid of directly available protons, leading to suboptimal electrochemical H2-evolving kinetics even on catalysts with high intrinsic activities like CoP. On the other hand, high local acidity (i.e., superfluous protons) can lead to undesirable catalyst corrosion and active site blocking by excessive hydrogen coverage. Herein, a “cobalt phosphate-clothed-CoP (CoPi@CoP)” nanoarray catalyst is developed for proof of concept to explore a possible proton supply design principle. The nanometer-thick amorphous CoPi appears to serve multiple functions: facilitating water dissociation/H–O cleavage, buffering excess protons, and accelerating proton transfer/donation, thus optimizing the local proton supply to H-consuming sites. As expected, CoPi@CoP demonstrates state-of-the-art hydrogen evolution reaction performance in alkaline electrolytes, surpassing that of intrinsically active CoP. Online differential mass spectrometry, dynamic potential decay transients, spectroscopy data, and theoretical calculations reveal possible (atomic scale) reaction mechanisms.
期刊介绍:
Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.