首页|钛基材Pt涂层接触电阻及耐蚀性能研究

钛基材Pt涂层接触电阻及耐蚀性能研究

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质子交换膜(PEM)电解制氢系统因具有宽范围、快速动态响应能力,在新能源消纳、电网调峰等领域具有广阔的应用前景.为了提升制氢电解堆电传输性能,降低接触电阻,本文利用磁控溅射技术制备了钛毡和钛板上的Pt涂层,并对这些涂层进行了研究,探究了制备工艺对薄膜的微观结构、传输性能和耐蚀性能的影响.研究发现,最佳磁控溅射工艺包括等离子清洗时间20 min,溅射时间10 min,以及溅射功率100 W.在接触电阻方面,镀有铂的钛毡表现出优异的接触电阻性能.通过SEM和EDS测试分析,发现随着功率和时间的增加,Pt颗粒的尺寸逐渐增大.然而,当颗粒尺寸过大时,Pt颗粒之间发生相互挤压,导致微小裂纹的产生,从而影响Pt涂层耐蚀性能.这些研究结果对于优化PEM制氢电解堆的性能,提高其稳定性具有重要意义.
Study on the Conductive and Corrosion-Resistant Properties of Pt Coatings on Titanium Substrates
Proton exchange membrane(PEM)water electrolysers for hydrogen production boast a wide range of flexible and adjustable capabilities,including fast dynamic responses.They hold extensive potential in fields like new energy consumption and power grid peak shaving.To enhance the electrical transmission performance and minimize the contact resistance of the water electrolyser stack,this study employs magnetron sputtering technology to deposit Pt coatings on titanium felt and titanium plates.Scholarly investigation has increasingly adopted innovative methodologies like magnetron sputtering to develop advanced electrode materials.Central to this research is an in-depth examination of the effects of magnetron-sputtered Pt coatings on titanium felts and plates.The study meticulously analyzed these coatings to elucidate their microstructural characteristics,transport properties,and corrosion-resistance.Rigorous experimentation determined the optimal sputtering parameters:a 20 min plasma cleaning phase,a 10 min sputtering period,and a power input of 100 watts.These precise conditions yielded coatings with notable performance attributes.Specifically,the study highlighted a significant reduction in contact resistance for platinum-coated titanium felts,demonstrating the sputtering technique's ability to enhance charge transfer kinetics efficiently.Analysis of the platinum particle dynamics employed SEM and EDS,revealing that increased sputtering power and duration led to larger platinum particles.However,maintaining a balance is crucial,as excessive particle enlargement may induce compressive forces between particles,causing micro-fissures that could compromise the coatings'corrosion-resistance.In conclusion,the insights derived from this research are instrumental in improving the overall efficiency and durability of PEM electrolysis systems.By optimizing the fabrication process and understanding the relationship between deposition parameters and material characteristics,this study makes a significant contribution to advancing robust hydrogen production technologies,further supporting the integration of clean energy solutions.

Pt coatingPEM water electrolysers for hydrogen productionmagnetron sputteringprocess parametermicrostructurecontact resistancecorrosion-resistant property

宋洁、梁丹曦、岳骆、徐桂芝、胡晓、常亮、徐超

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华北电力大学,能源动力与机械工程学院,北京 102206

先进输电技术全国重点实验室(国网智能电网研究院有限公司),北京 102209

清华大学,高端装备界面科学与技术全国重点实验室,北京 100084

Pt涂层 PEM膜电解制氢 磁控溅射 工艺参数 微观结构 接触电阻 耐蚀性能

国家重点研发计划国家电网科技项目国家资助博士后研究人员计划(C档)

2021YFB4000100521532220014GZC20231287

2024

人工晶体学报
中材人工晶体研究院

人工晶体学报

CSTPCD北大核心
影响因子：0.554
ISSN：1000-985X
年,卷(期)：2024.53(5)
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