Constructing Hydrangea-Like Iron-Cobalt Phosphides via Boron-Assisted Strategy as an Efficient Catalyst for Water Splitting at High Current Density

doi:10.1002/cssc.202400900

	Constructing Hydrangea-Like Iron-Cobalt Phosphides via Boron-Assisted Strategy as an Efficient Catalyst for Water Splitting at High Current Density
	Pan HZ(潘泓舟); Hao RX(郝睿昕); Wang RY(王璐瑶); Yu Y(余奕）; Yang N(杨楠)
	2024-10-01
发表期刊	CHEMSUSCHEM (IF:7.5[JCR-2023],8.4[5-Year])
ISSN	1864-5631
EISSN	1864-564X
卷号	18 期号:1
发表状态	已发表
DOI	10.1002/cssc.202400900
摘要	["Finding suitable bifunctional catalysts for industrial hydrogen production is the key to fully building a hydrogen energy society. In this study, we present a novel approach to modifying the surface morphology of electrodeposited cobalt phosphide (CoP). Specifically, we have developed a method to create a hydrangea-like structure of bimetallic cobalt-iron phosphide (B-CoFeP@CoP) through ion-exchange and NaBH4-assisted strategies. This catalyst exhibited excellent bifunctional catalytic capability at high current densities, achieving a current density of 500 mA cm-2 at a small overpotential (387 mV for OER and 252 mV for HER). When assembled into an OWS electrolyzer, this catalyst showed a fairly low cell voltage (approximate to 1.88 V) at 500 mA cm-2 current density., Furthermore, B-CoFeP@CoP shows ceaseless durability over 120 h in both freshwater and seawater with almost no change in the cell voltage. A combined experimental and theoretical study identified that the unique hydrangea-like structure provided a larger electrochemically active surface area and more effective active sites. Further analysis indicates that during the OER process, phosphides ensure that bimetallic active sites adsorb more OOH * intermediates and further DFT calculations showed that B-Fe2P and B-Co2P acted as active centers for dissociation of H2O and desorption of H2, respectively, to synergistically catalyze the HER process.","The CoFe bimetallic phosphides, shaped like hydrangeas, were synthesized through a multi-step process involving electrodeposition, ion exchange, and Boron-assisted surface reconstruction. This method results in structures with a significantly larger specific surface area and increased active sites. Consequently, B-CoFeP@CoP demonstrate exceptional electrocatalytic performance for splitting water and seawater in alkaline environments. image"]
关键词	Bimetallic phosphide Boron-assisted Hydrangea-like Bifunctional Overall water splitting
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收录类别	SCI ; EI
语种	英语
资助项目	National Natural Science Foundation of China[52202267] ; SPST of ShanghaiTech University[EM02161943]
WOS研究方向	Chemistry ; Science & Technology - Other Topics
WOS类目	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology
WOS记录号	WOS:001332240600001
出版者	WILEY-V C H VERLAG GMBH
EI入藏号	20244217216749
EI主题词	Boron compounds
EI分类号	201.1.2 ; 202.9.3 ; 801.3.1 ; 802.2 Chemical Reactions ; 804.2 Inorganic Compounds ; 942.2 Electric Variables Measurements
原始文献类型	Article in Press
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/398632
专题	物质科学与技术学院_硕士生物质科学与技术学院_PI研究组_杨楠组物质科学与技术学院_PI研究组_于奕组物质科学与技术学院_PI研究组_刘巍组物质科学与技术学院_博士生
通讯作者	Yang N(杨楠)
作者单位	Shanghaitech University
推荐引用方式 GB/T 7714	Pan HZ,Hao RX,Wang RY,et al. Constructing Hydrangea-Like Iron-Cobalt Phosphides via Boron-Assisted Strategy as an Efficient Catalyst for Water Splitting at High Current Density[J]. CHEMSUSCHEM,2024,18(1).
APA	Pan HZ,Hao RX,Wang RY,Yu Y,&Yang N.(2024).Constructing Hydrangea-Like Iron-Cobalt Phosphides via Boron-Assisted Strategy as an Efficient Catalyst for Water Splitting at High Current Density.CHEMSUSCHEM,18(1).
MLA	Pan HZ,et al."Constructing Hydrangea-Like Iron-Cobalt Phosphides via Boron-Assisted Strategy as an Efficient Catalyst for Water Splitting at High Current Density".CHEMSUSCHEM 18.1(2024).