Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Intergranular passivation of the TiC coating for enhancing corrosion resistance and surface conductivity in stainless-steel bipolar plates | |
Li, Jingling1,2,3,4; Xu, Zeling1,2,3,4; Li, Yujian3,4 ; Ma, Xinzhou1,2; Mo, Jiamei3,4; Weng, Lingyan1,2; Liu, Cuiyin1,2
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| 2021-01-03 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE
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| ISSN | 0022-2461 |
| Pages | 15 |
| Corresponding Author | Li, Jingling(lijl@fosu.edu.cn) ; Liu, Cuiyin(liu_cuiyin@163.com) |
| Abstract | Stainless-steel bipolar plates (BPPs) are of great significance in low-cost, easily processable, lightweight proton exchange membrane fuel cells (PEMFCs) despite the challenge presented by corrosion in protective coatings. Localized corrosion along the grain boundaries in a crystal film is common, but few preventive measures have been developed so far. Thus, we propose a novel strategy using a tantalum (Ta) and carbon (C) co-modification to improve the chemical stability of titanium carbide (TiC)-based coatings (Cr/Ta/TiC/C). During the film growth, the subjacent Ta atoms were thermally diffused throughout the columnar structure of TiC and reacted with the C layer. The reaction product, i.e., TaC, acted as a chemical passivator to the grain boundary. Combined with the C capping layer, these functional layers synergistically suppressed any localized corrosion. Therefore, corrosion current densities within the United States Department of Energy's technical recommendations were achieved in both potentiostatic and potentiodynamic polarization. Meanwhile, by controlling the Ta metal dispersion, the interfacial contact resistance between the multilayer structure and the carbon paper can be reduced to 7.1 m omega center dot cm(-2) at a compaction force of 140 N center dot cm(-2). The substantial improvement in the corrosion resistance and conductivity of BPP places our work among the most efficient anticorrosion systems in PEMFC applications reported so far. |
| DOI | 10.1007/s10853-020-05733-w |
| WOS Keyword | FUEL-CELL ; MECHANICAL-PROPERTIES ; 316L ; BEHAVIOR ; FILM ; 304-STAINLESS-STEEL ; ENVIRONMENT ; PROTECTION ; DIFFUSION ; GRAPHENE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51902054] ; National Natural Science Foundation of China[51702051] ; Natural Science Foundation of Guangdong province[2017A030313307] |
| WOS Research Area | Materials Science |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Guangdong province |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000604580400015 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/32499 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Li, Jingling; Liu, Cuiyin |
| Affiliation | 1.Foshan Univ, Sch Mat Sci & Hydrogen Energy, Foshan 528000, Peoples R China 2.Guangdong Key Lab Hydrogen Energy Technol, Foshan 528000, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Li, Jingling,Xu, Zeling,Li, Yujian,et al. Intergranular passivation of the TiC coating for enhancing corrosion resistance and surface conductivity in stainless-steel bipolar plates[J]. JOURNAL OF MATERIALS SCIENCE,2021:15. |
| APA | Li, Jingling.,Xu, Zeling.,Li, Yujian.,Ma, Xinzhou.,Mo, Jiamei.,...&Liu, Cuiyin.(2021).Intergranular passivation of the TiC coating for enhancing corrosion resistance and surface conductivity in stainless-steel bipolar plates.JOURNAL OF MATERIALS SCIENCE,15. |
| MLA | Li, Jingling,et al."Intergranular passivation of the TiC coating for enhancing corrosion resistance and surface conductivity in stainless-steel bipolar plates".JOURNAL OF MATERIALS SCIENCE (2021):15. |
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