Research of Metal Bipolar Plates with Surface Treatment for Proton Exchange Membrane Fuel Cell

付宇 1; 2; 侯明 1; 林国强 3; 邵志刚 1; 衣宝廉 1

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Research of Metal Bipolar Plates with Surface Treatment for Proton Exchange Membrane Fuel Cell

更新时间：2025-12-08

- Research of Metal Bipolar Plates with Surface Treatment for Proton Exchange Membrane Fuel Cell
- Vol. 42, Issue 3, Pages: 364-367(2008)
- 作者机构：
  
  1. 中国科学院大连化学物理研究所,大连,116023
  2. 中国科学院研究生院,北京,100049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG174.444
- Online First：10 March 2008，
  
  Published：2008
- 稿件说明：
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付宇 1, 2, 侯明 1, et al. Research of Metal Bipolar Plates with Surface Treatment for Proton Exchange Membrane Fuel Cell[J]. 2008, 42(3): 364-367.
DOI：

付宇 1, 2, 侯明 1, et al. Research of Metal Bipolar Plates with Surface Treatment for Proton Exchange Membrane Fuel Cell[J]. 2008, 42(3): 364-367. DOI：

摘要

通过脉冲偏压电弧离子镀工艺

在316L不锈钢表面上沉积出致密的Cr的氮化物梯度薄膜(Cr

N).表面改性后的不锈钢双极板界面导电性能良好

在质子交换膜燃料电池电堆的组装力范围内

与Toray碳纸的接触电阻为7.9～11.2 mΩ·cm

.双极板的耐腐蚀性能相对于未处理的316L不锈钢基体有了显著的增强:在0.5 mol/L H

+5×10

-6

mol/L F

的模拟电池环境腐蚀溶液中

室温下改性后双极板的腐蚀电流约为10

-7

A/cm

比基体的小了2个数量级; 70 ℃时在相同的腐蚀环境下

虽然腐蚀电流有所增大

但仍然比不锈钢基体的腐蚀电流小1～2个数量级.改性双极板有很高的表面能

与水的接触角达90°

这有利于电池内部液态水的排出.通过表面改性获得的具有耐蚀-导电-憎水综合性能的金属双极板材料

在质子交换膜燃料电池中有很大的应用潜力.

Abstract

The stainless steel(316L)bipolar plate was coated with a film of Cr

N by the pulsed bias arc ion plating method. The bipolar plate showed low interfacial contact resistance after surface treatment. In the range of stack compacting pressures

the contact resistance between the bipolar plate and Toray carbon paper was 7.9-11.2 mΩ·cm

. The 316L stainless steel bipolar plate also showed improved corrosion resistance in simulated proton exchange membrane fuel cell(PEMFC)environment after surface treatment. The corrosion current density of the bipolar plate in 0.5 mol/L H

+5×10

-6

mol/L F

was about 10

-7

A/cm

two orders of magnitude lower than that of the base metal. The corrosion experiment conducted at 70 ℃ indicated that the corrosion current density of the bipolar plate was about one or two orders of magnitude lower than that of the base metal. In addition

the treated bipolar plate had very high surface energy. The contact angle of the bipolar plate with water was 90°

which is beneficial for water management of the stack. The present metal bipolar plate with good corrosion resistance

good interfacial conductivity and high surface energy might have great potential of application in PEMFC.

关键词

Keywords

references

衣宝廉.燃料电池——原理·技术·应用 [M].北京:化学工业出版社,2003:220-228.

KELLY M J, FAFILEK G, BESENHARD J O, et al. Contaminant absorption and conductivity in polymer electrolyte membranes [J].Journal of Power Sources,2005,145(2):249-252.

BERTRAND G, MAHDJOUB H, MEUNIER C. A study of the corrosion behaviour and protective quality of sputtered chromium nitride coatings [J].Surface and Coatings Technology,2000,126(2/3):199-209.

PAULAUSKAS I E, BRADY M P, MEYER H M, et al. Corrosion behavior of CrN, Cr2N and π phase surfaces on nitrided Ni-50Cr for proton exchange membrane fuel cell bipolar plates [J].Corrosion Science,2006,48(10):3157-3171.

BRADY M P, WEISBROD K, PAULAUKAS I, et al. Preferential thermal nitridation to form pin-hole free Cr-nitrides to protect proton exchange membrane fuel cell metallic bipolar plates [J]. Scripta Materialia, 2004,50(7):1017-1022.

WANG H, BRADY M P, TEETER G, et al. Thermally nitrided stainless steels for polymer electrolyte membrane fuel cell bipolar plates: model Ni-50Cr and austenitic 349 TM alloys [J]. Journal of Power Sources, 2004,138(1/2):79-85.

WANG H, BRADY M P, MORE K L, et al. Thermally nitrided stainless steels for polymer electrolyte membrane fuel cell bipolar plates beneficial modification of passive layer on AISI446 [J]. Journal of Power Sources,2004,138(1/2):86-93.

BRADY M P, WANG H, YANG B, et al. Growth of Cr-Nitrides on commercial Ni-Cr and Fe-Cr base alloys to protect PEMFC bipolar plates [J]. International Journal of Hydrogen Energy,2007,32(16):3778-3788.

HUANG M D, LEE Y P, DONG C, et al.Preparation of TiN films by arc ion plating using dc and pulsed biases [J]. J Vac Sci Technol,2004,A22(2):250-251.

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