Pt@Ni(OH)2自支撑催化剂的制备及其电解水析氢性能研究

doi:10.12422/j.issn.1006-396X.2025.03.007

摘要/Abstract

摘要：

氢气作为清洁能源的载体，其高效制备依赖于电解水析氢反应（HER）催化剂的性能优化。铂（Pt）基催化剂具有优异的HER活性，但成本高、稳定性不足，而这些问题可以通过载体材料设计解决。氢氧化镍（Ni(OH)₂）凭借其独特的质子传导能力、界面调控特性及其对Pt的稳定作用，成为极具潜力的载体材料。然而，Ni(OH)₂载体与Pt纳米颗粒的构效关系及其合成参数对催化性能的影响机制仍缺乏系统性研究。聚焦水热合成温度对Ni(OH)₂载体晶相演变及Pt界面生长行为的调控规律，通过分析合成参数?微观结构?催化性能的构效关系，揭示了温度对载体结晶度、Pt颗粒尺寸分布及界面电子结构的协同作用。结果表明，100 ℃下合成的Pt@Ni(OH)₂催化剂在1 mol/L的KOH电解液中表现出卓越的HER活性，在电流密度为10、100 mA/cm2时过电位分别为5、62 mV，塔菲尔（Tafel）斜率为70.0 mV/dec；经过50 h的连续运行，该电极的析氢性能几乎无衰减，显示出卓越的稳定性。

关键词: 析氢反应, 镍基催化剂, 电催化, 贵金属掺杂, 合成温度调控

Abstract:

The efficient production of hydrogen as a clean energy carrier relies on the performance optimization of electrocatalysts for the hydrogen evolution reaction (HER).Although platinum (Pt)?based catalysts exhibit exceptional HER activity,their high cost and stability issues can be mitigated through rational design of the support material.Nickel hydroxide (Ni(OH)?) has emerged as a promising support due to its unique proton conductivity,interfacial modulation properties,and stabilizing effects on Pt. However,a systematic understanding of the structure–activity relationship between Ni(OH)? supports and Pt nanoparticles,as well as the impact of synthesis parameters on catalytic performance,remains lacking.This study focuses on the regulation of Ni(OH)? support phase evolution and Pt interfacial growth behavior by hydrothermal synthesis temperature.By analyzing the structure–performance relationship through the synthesis parameter–microstructure–catalytic performance correlation mechanism),the synergistic effects of temperature on the crystallinity of the support,Pt particle size distribution,and interfacial electronic structure were elucidated.Experimental results indicate that the Pt@Ni(OH)? catalyst synthesized at 100 ℃ exhibits outstanding HER activity in 1 mol/L KOH electrolyte,with overpotentials of only 5 mV at 10 mA/cm2 and 62 mV at 100 mA/cm2,along with a Tafel slope of 70.0 mV/dec.After 50 hours of continuous operation,the electrode maintains nearly unchanged HER performance,demonstrating remarkable stability.

Key words: Hydrogen evolution reaction, Nickel?based catalyst, Electrocatalysis, Noble metal doping, Synthesis temperature Control

中图分类号:

TQ117.9

黄康胜, 王宁, 郭铭瑞. Pt@Ni(OH)₂自支撑催化剂的制备及其电解水析氢性能研究[J]. 石油化工高等学校学报, 2025, 38(3): 66-74.

Kangsheng HUANG, Ning WANG, Mingrui GUO. Synthesis of Self⁃Supported Pt@Ni(OH)₂ Catalysts and Their Electrocatalytic Hydrogen Evolution Performance for Water Splitting[J]. Journal of Petrochemical Universities, 2025, 38(3): 66-74.

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链接本文: https://journal.lnpu.edu.cn/syhg/CN/10.12422/j.issn.1006-396X.2025.03.007

https://journal.lnpu.edu.cn/syhg/CN/Y2025/V38/I3/66

图/表 9

图1 Ni(OH)2-t的XRD谱图

Fig.1 XRD patterns of Ni(OH)2-t

图2 Ni(OH)2-t和Pt@Ni(OH)2-t的SEM图

Fig.2 The SEM images of Ni(OH)2-t and Pt@Ni(OH)2-t

表1 Pt@Ni(OH)2-t的ICP-OES数据对比

Table 1 Comparison of ICP-OES data for Pt@Ni(OH)2-t

催化剂	w（Pt）/%	w（Ni）/%
Pt@Ni(OH)₂-100	4.89	95.01
Pt@Ni(OH)₂-120	2.92	97.05
Pt@Ni(OH)₂-140	2.61	97.37
Pt@Ni(OH)₂-160	1.87	98.12

图3 Ni(OH)2-100和Pt@Ni(OH)2-100的XRD谱图

Fig.3 XRD patterns of Ni(OH)2-100 and Pt@Ni(OH)2-100

图4 Ni(OH)2-100的TEM图和Pt@Ni(OH)2-100的TEM、HRTEM、EDS图

Fig.4 TEM, HRTEM, and EDS images of Pt@Ni(OH)2-100 and Ni(OH)2-100

图5 Pt@Ni(OH)2-t的HER性能

Fig.5 The HER performance of Pt@Ni(OH)2-t

表2 10 mA /cm2电流密度下的贵金属质量分数和过电位的关系

Table 2 The relationship between the content of precious metals and overpotential at a current density of 10 mA/cm2

催化剂	w（贵金属）/%	过电位/mV	参考文献
Pt@Ni(OH)₂-100	4.89	5	本研究
Ru@Ni-MOFs	1.30	25	[22]
Co(OH)₂-ZIF@Ru	3.51	22	[23]
Ru/C/NiCoP	0.12	34	[24]
Ir@NiFe-MOF	8.20	15	[25]
Ir-black WO_3-_x	7.00	10	[26]
NiIr@N-C	1.10	32	[27]
PNOF	8.20	46	[28]
Ru-NiCu LDH	1.10	14	[29]
RhNiFe-P	9.00	32	[30]

图6 Pt@Ni(OH)2-t的Tafel斜率、EIS曲线、CV曲线、Cdl曲线

Fig.6 The Tafel slope, EIS curves, CV curves,Cdl of Pt@Ni(OH)2-t

图7 Pt@Ni(OH)2-100的稳定性测试结果

Fig.7 Pt@Ni(OH)2-100 stability test results

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Pt@Ni(OH)₂自支撑催化剂的制备及其电解水析氢性能研究

Synthesis of Self⁃Supported Pt@Ni(OH)₂ Catalysts and Their Electrocatalytic Hydrogen Evolution Performance for Water Splitting

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