织构气体扩散层表面氢氧燃料电池阴极超低Pt载量催化层的磁控溅射法制备

doi:10.7503/cjcu20180491

高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (3): 542.doi: 10.7503/cjcu20180491

织构气体扩散层表面氢氧燃料电池阴极超低Pt载量催化层的磁控溅射法制备

刘家明, 傅凯林, 张泽, 郭伟(), 潘牧

武汉理工大学材料复合新技术国家重点实验室, 燃料电池湖北省重点实验室, 武汉 430070

收稿日期:2019-07-09 出版日期:2019-01-24 发布日期:2019-01-24
作者简介:
联系人简介: 郭伟, 男, 博士, 副研究员, 主要从事质子交换膜燃料电池研究. E-mail: guowei2016@whut.edu.cn
基金资助:
国家自然科学基金(批准号: 21706200)和中国博士后科学基金(批准号: 2018T110813)资助.

Ultra-low Pt Loading Cathodic Catalyst Layer Prepared on Textured Gas Diffusion Layer by Magnetron Sputtering Method for Hydrogen-oxygen Fuel Cells^†

LIU Jiaming, FU Kailin, ZHANG Ze, GUO Wei^*(), PAN Mu

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Hubei Provincial Key Laboratory of Fuel Cell, Wuhan University of Technology, Wuhan 430070, China

Received:2019-07-09 Online:2019-01-24 Published:2019-01-24
Contact: GUO Wei E-mail:guowei2016@whut.edu.cn
Supported by:
† Supported by the National Natural Science Foundation of China(No.21706200) and the Postdoctoral Science Foundation of China(No.2018T110813).

摘要/Abstract

摘要：

采用磁控溅射技术在具有织构结构的气体扩散层(GDL)表面制备了可应用于氢氧质子交换膜燃料电池的超低Pt载量阴极催化层, 并通过SEM、轮廓仪和XRD等测试方法表征了GDL及其载Pt后的形貌和物相, 利用XPS分析溅射Pt的化学价态, 使用电池测试台表征其电池性能. 测试结果表明, 磁控溅射法在GDL表面沉积的Pt催化层载量可控且分布均匀; 与商业GDL对比, Pt在织构GDL表面具有更大的可附着面积. 电池性能测试结果显示, 当Pt载量为0.04 mg/cm²时, 以织构GDL作基材的样品质量比功率高达26.25 kW/g Pt, 远大于商业GDL作基材时的17.76 kW/g Pt, 也大于同等Pt载量下商业Pt/C催化剂的24.00 kW/g Pt.

关键词: 磁控溅射, 氢氧质子交换膜燃料电池, 超低铂载量, 织构气体扩散层

Abstract:

Ultra-low loading of Pt was deposited on the textured gas diffusion layer(GDL) by magnetron sputtering method to prepare cathodic catalyst layer for hydrogen-oxygen proton exchange membrane fuel cells(PEMFCs). The characterization of GDL before and after Pt-loading was carried out using scanning electron microscope(SEM), profilometer and X-ray diffractometer(XRD). The chemical states of sputter deposited Pt were investigated by X-ray photoelectron spectroscopy(XPS). The performance of membrane electrode asembly(MEA) was tested by fuel cell station. The results showed that the Pt deposited on the GDL was controllable and evenly distributed. The surface area of Pt deposited on the textured GDL was larger than that deposited on the commercial GDL. The fuel cell performance indicated that the Pt deposited on the textured GDL with the loading of 0.04 mg/cm² exhibited the maximum mass specific power of 26.25 kW/g Pt, which was higher than that of the Pt deposited on the commercial GDL(17.76 kW/g Pt). In addition, the maximum mass specific power of commercial Pt/C was 24.00 kW/g Pt.

Key words: Magnetron sputtering, Hydrogenoxygen proton exchange membrane fuel cell(PEMFC), Ultra-low Pt loading: Textured gas diffusion layer(T-GDL)

中图分类号:

O646

TrendMD:

刘家明, 傅凯林, 张泽, 郭伟, 潘牧. 织构气体扩散层表面氢氧燃料电池阴极超低Pt载量催化层的磁控溅射法制备. 高等学校化学学报, 2019, 40(3): 542.

LIU Jiaming,FU Kailin,ZHANG Ze,GUO Wei,PAN Mu. Ultra-low Pt Loading Cathodic Catalyst Layer Prepared on Textured Gas Diffusion Layer by Magnetron Sputtering Method for Hydrogen-oxygen Fuel Cells^†. Chem. J. Chinese Universities, 2019, 40(3): 542.

图/表 7

Fig.1 Flow chart of sputter Pt on the GDL surface

Fig.2 SEM images before and after sputtering Pt on GDL surface(A), (B) C-GDL; (C) C-GDL-200 s; (D) C-GDL-1200 s; (E), (F) T-GDL; (G) T-GDL-200 s; (H)T-GDL-1200 s.

Fig.3 Profiler images of C-GDL(A) and T-GDL(B) surfaces

Fig.4 SEM images(A1—D1) and Pt element distribution maps(A2—D2) of GDL section (A1, A2) C-GDL-200 s; (B1, B2) C-GDL-1200 s; (C1, C2) T-GDL-200 s; (D1, D2) T-GDL-1200 s.

Fig.5 XRD patterns of Pt sputtered on GDL surface

Fig.6 XPS spectra of Pt sputtered on FGDL surface

Fig.7 I-V curves(A, C) and power density curves(B, D) of 0.04 mg/cm2 Pt loading(A, B) and 0.24 mg/cm2 Pt loading(C, D) GDL

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织构气体扩散层表面氢氧燃料电池阴极超低Pt载量催化层的磁控溅射法制备

Ultra-low Pt Loading Cathodic Catalyst Layer Prepared on Textured Gas Diffusion Layer by Magnetron Sputtering Method for Hydrogen-oxygen Fuel Cells^†

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织构气体扩散层表面氢氧燃料电池阴极超低Pt载量催化层的磁控溅射法制备

Ultra-low Pt Loading Cathodic Catalyst Layer Prepared on Textured Gas Diffusion Layer by Magnetron Sputtering Method for Hydrogen-oxygen Fuel Cells†

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Ultra-low Pt Loading Cathodic Catalyst Layer Prepared on Textured Gas Diffusion Layer by Magnetron Sputtering Method for Hydrogen-oxygen Fuel Cells^†