Properties of SS304 Modified by Nickel-Cobalt Alloy Coating with Cauliflower-Shaped Micro/Nano Structures in Simulated PEMFC Cathode Environment

被引：8

作者：

Xuan, Junji ^{[1
,2
]}

Liu, Yueren ^{[2
]}

Xu, Likun ^{[1
,2
]}

Xin, Yonglei ^{[2
]}

Xue, Lili ^{[1
]}

Li, Li ^{[1
]}

机构：

[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China

[2] Luoyang Ship Mat Res Inst, State Key Lab Marine Corros & Protect, Qingdao 266237, Peoples R China

来源：

NANOMATERIALS | 2022年 / 12卷 / 12期

关键词：

bipolar plates; stainless steel; PEMFC; Ni-Co; hydrophobicity; electrodeposition; corrosion resistance; conductivity; wettability; BIPOLAR PLATE MATERIAL; COATED STAINLESS-STEEL; FUEL-CELL; CORROSION BEHAVIOR; ELECTROLESS NICKEL; NI-MO; PERFORMANCE; SURFACE; ELECTRODEPOSITION; TEMPERATURE;

D O I：

10.3390/nano12121976

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study presents the corrosion behavior and surface properties of SS304 modified by electrodeposited nickel-cobalt (Ni-Co) alloy coating with cauliflower-shaped micro/nano structures (Ni-Co/SS304) in the simulated PEMFC cathodic environment. The hydrophobicity of the as-prepared Ni-Co alloy coating can be improved simply by low-temperature annealing. The morphology and composition of the Ni-Co/SS304 were analyzed and characterized by SEM, EDS, XRD, and XPS. The polarization, wettability, and ICR tests were respectively conducted to systemically evaluate the performance of Ni-Co/SS304 in the simulated PEMFC cathode environment. As revealed by the results, the Ni-Co/SS304 can maintain its hydrophobicity under hot-water droplets as high as 80 degrees C and demonstrates higher conductivity than the bare SS304 substrate before and after polarization (0.6 V vs. SCE, 5 h), which is of great significance to improve the surface hydrophobicity and conductivity of bipolar plates.

引用

页数：16