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银微/纳米枝晶涂层改性的SS304在模拟质子交换膜燃料电池阴极环境中具有热水超疏性的性能。

Performance of SS304 Modified by Silver Micro/Nano-Dendrite Coating with Hot-Water Super-Repellency in Simulated PEMFC Cathode Environment.

作者信息

Xuan Junji, Li Bingzhi, Xu Likun, Zhang Zhaoqi, Xin Yonglei, Xue Lili, Li Li

机构信息

College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.

State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China.

出版信息

Nanomaterials (Basel). 2022 May 18;12(10):1726. doi: 10.3390/nano12101726.

DOI:10.3390/nano12101726
PMID:35630946
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9145656/
Abstract

In this study, an silver (Ag) plating with micro/nano-dendrite structures is prepared on the 304 stainless steel (SS304) surface by potentiostatic deposition (Ag/SS304). After being modified by n-dodecyl mercaptan (NDM) with the low surface energy, the obtained sample (NDM@Ag/SS304) exhibits stable superhydrophobicity and excellent hot-water repellency. The surface morphology and composition of NDM@Ag/SS304 are analyzed by scanning electron microscope (SEM), X-ray spectrometer (EDS), X-ray diffractometer (XRD), and X-ray photoelectron spectrometer (XPS) characterization. The electrochemical measurements, tests of water contact angle (WCA), and interfacial contact resistance (ICR) are employed to systematically study the performance of the NDM@Ag/SS304 in the simulated cathode environment of proton exchange membrane fuel cell (PEMFC). The results show that the NDM@Ag/SS304 has high corrosion potential (0.25 V) and low corrosion current density (4.04 μA/cm); after potentiostatic polarization (0.6 V, 5 h), the NDM@Ag/SS304 also shows high superhydrophobic stability.

摘要

在本研究中，通过恒电位沉积法（Ag/SS304）在304不锈钢（SS304）表面制备了具有微/纳树枝状结构的银（Ag）镀层。用具有低表面能的正十二烷基硫醇（NDM）对所得样品（NDM@Ag/SS304）进行改性后，其表现出稳定的超疏水性和优异的抗热水性。通过扫描电子显微镜（SEM）、X射线光谱仪（EDS）、X射线衍射仪（XRD）和X射线光电子能谱仪（XPS）表征分析了NDM@Ag/SS304的表面形貌和组成。采用电化学测量、水接触角（WCA）测试和界面接触电阻（ICR）测试，系统研究了NDM@Ag/SS304在质子交换膜燃料电池（PEMFC）模拟阴极环境中的性能。结果表明NDM@Ag/SS304具有高腐蚀电位（约0.25 V）和低腐蚀电流密度（约4.04 μA/cm²）；在恒电位极化（0.6 V,5 h）后,NDM@Ag/SS304也表现出高超疏水稳定性。

注

原文中“4.04 μA/cm”表述有误，根据语境这里应该是面积单位，故补充为“4.04 μA/cm²” 。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/554407531ff8/nanomaterials-12-01726-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/4931caf620f9/nanomaterials-12-01726-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/868c610be356/nanomaterials-12-01726-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/2e74f654a1b7/nanomaterials-12-01726-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/bf8ded112304/nanomaterials-12-01726-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/ad97c8eae9a4/nanomaterials-12-01726-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/1de4014483e2/nanomaterials-12-01726-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/faf1d075e4d5/nanomaterials-12-01726-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/554407531ff8/nanomaterials-12-01726-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/4931caf620f9/nanomaterials-12-01726-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/868c610be356/nanomaterials-12-01726-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/2e74f654a1b7/nanomaterials-12-01726-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/bf8ded112304/nanomaterials-12-01726-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/ad97c8eae9a4/nanomaterials-12-01726-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/1de4014483e2/nanomaterials-12-01726-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/faf1d075e4d5/nanomaterials-12-01726-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e0a1/9145656/554407531ff8/nanomaterials-12-01726-g008.jpg

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