The investigation of Mo alloying on the electrochemical behaviour of pure Ti
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摘要: 研究了不同Mo含量合金化对纯Ti微观组织结构和电化学行为的影响，旨在改善钛双极板在质子交换膜水电解环境中的耐蚀性和电导率。结果表明，随着Mo含量增加，β相的体积分数增加，α相的晶粒尺寸减小，耐蚀性提高。韦伯阻抗出现在开路电位下阻抗谱的低频区域。当Mo含量低于1.0%时，电化学腐蚀后表面存在较多腐蚀坑。1.0 V vs Ref极化4 h的钝化膜表现出n型半导体行为，当Mo含量大于1.0%时，钝化膜的导电性增加。Abstract: The effect of pure Ti alloyed with different Mo content on the microstructure and electrochemical behaviour was studied for the need of further improvement in corrosion resistance and conductivity of titanium bipolar plates in proton exchange membrane water electrolysis environments. Results indicated that the volume fraction of β phase increased, the grain size of α phase decreased, and the corrosion resistance was improved with the increase of Mo content. The warburg impedance appeared in the low frequency region of impedance spectroscopy obtained at open circuit potential (OCP). When the Mo content was below 1.0%, there were many corrosion pits on the surface after electrochemical corrosionthe. Passivation film formed by polarizing at 1.0 V vs Ref for 4 hours exhibited n-type semiconductor behavior, and the conductivity increasesd with Mo content greater than 1.0%.
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Key words:
- bipolar plates /
- Ti /
- Mo /
- microstructure /
- corrosion resistance
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图 1 不同含量Mo合金化Ti的SEM组织
Figure 1. The SEM microstructures of Ti alloyed with different Mo contents
(a) 0.5%；(b) 1.0%；(c) 1.5%；(d) 2.0%
图 2 不同含量Mo合金化Ti的开路电位和动电位极化曲线
(a)开路电位曲线; (b)动电位极化曲线
Figure 2. The curves of OCP and potentiodynamic polarization of Ti alloyed with different Mo contents
图 3 不同含量Mo合金化Ti的EIS
(a) 能斯特图; (b) 波特图
Figure 3. EIS curves of Ti alloyed with different Mo contents
图 4 不同含量Mo合金化Ti的EIS等效电路
Figure 4. Equivalent circuit of Ti alloyed with different Mo contents
图 5 不同含量Mo合金化Ti电化学腐蚀后微观组织
(a) 0.5%；(b) 1.0%；(c) 1.5%；(d) 2.0%
Figure 5. The microstructures after electrochemical corrosion of Ti alloyed with different Mo contents
图 6 相对于参比电极1.0 V下，不同含量的Mo合金化纯Ti的MS曲线
Figure 6. MS plots of the passive films formed on Ti alloyed with different Mo contents at 1.0 V vs Ref
表 1 不同含量Mo合金化Ti的Ecorr和Icorr
Table 1. The Ecorr and Icorr of Ti alloyed with different Mo content
Sample Ecorr/V Icorr×105/(A·cm−2) Ti-0.5Mo −0.636 4.93 Ti-1.0Mo −0.630 4.66 Ti-1.5Mo −0.622 2.60 Ti-2.0Mo −0.611 1.85 
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表 2 不同含量Mo合金化Ti的阻抗谱等效电路参数
Table 2. Equivalent circuit parameters for impedance spectra of Ti alloyed with different Mo contents
Sample Rs/
(Ω·cm2)Rct/
(Ω·cm2)Qdl ×10−4/
(Ω−1·cm2·sn)ndl W× 10−3/
(Ω−1·cm2·s0.5)χ2 ×10−4 Ti-0.5Mo 4.759 830.7 3.281 0.87 7.855 13.80 Ti-1.0Mo 3.065 993.5 3.599 0.87 7.078 9.79 Ti-1.5Mo 2.334 1147.0 2.723 0.89 8.566 7.47 Ti-2.0Mo 2.659 1306.0 1.322 0.95 9.048 6.65
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[1] ANWAR S, LI X. Production of hydrogen from fossil fuel: A review[J]. Frontiers in Energy, 2023, 17(5): 585-610. doi: 10.1007/s11708-023-0886-4 [2] XIE Y, XU C, LIU Y, et al. Photothermal synergistic hydrogen production via a fly‐ash‐made interfacial vaporific system[J]. Advanced Science. 2024. [3] WANG Y, DONG G, YU J, et al. In-situ green hydrogen production from offshore wind farms, a prospective review[J]. Renewable Energy, 2025, 239: 122099. doi: 10.1016/j.renene.2024.122099 [4] SOUDAGAR M E M, SHARMA A, BHOOSHANAM N N, et al. Cerium oxide activated aquatic lettuce as source for hydrogen production via hydrothermal gasification: performance measures[J]. Biomass and Bioenergy, 2025, 193: 107552. doi: 10.1016/j.biombioe.2024.107552 [5] SHAN D F, SHEN G X, PENG S L, et al. Electrophoretic deposition of TiN coating on titanium bipolar plate used for PEM water electrolysis[J]. Electroplating & Finishing, 2022, 41(7): 497-501. (单东方, 申桂鑫, 彭善龙, 等. 电泳沉积制备质子交换膜水电解用钛双极板氮化钛涂层[J]. 电镀与涂饰, 2022, 41(7): 497-501. doi: 10.19289/j.1004-227x.2022.07.009SHAN D F, SHEN G X, PENG S L, et al. Electrophoretic deposition of TiN coating on titanium bipolar plate used for PEM water electrolysis[J]. Electroplating & Finishing, 2022, 41（7）: 497-501. doi: 10.19289/j.1004-227x.2022.07.009 [6] WANG Y, ZHAO Z, LIANG X, et al. Supported IrO2 nanocatalyst with multilayered structure for proton exchange membrane water electrolysis[J]. Advanced Materials, 2024. [7] AYERS K E, CAPUANO C, ANDERSON E B. Recent advances in cell cost and efficiency for PEM-based water electrolysis[J]. ECS transactions, 2012, 41(10): 15-22. doi: 10.1149/ma2011-02/6/283 [8] SHEN L, HUI Z F, MIU S J, et al. Research on corrosion resistance of plasma nitriding modified layer on stainless steel metal bipolar plate[J]. Solid State Phenomena, 2024, 367: 99-103. doi: 10.4028/p-yn4aYu [9] GAO Q, TENG A J, KANG Q, et al. The investigation of Ru alloying on the electrochemical behaviour of pure Ti[J]. Iron Steel Vanadium Titanium, 2025, 46(1): 40-44. (高强, 滕艾均, 康强, 等. Ru合金化纯Ti电化学行为研究[J]. 钢铁钒钛, 2025, 46(1): 40-44. doi: 10.7513/j.issn.1004-7638.2025.01.006GAO Q, TENG A J, KANG Q, et al. The investigation of Ru alloying on the electrochemical behaviour of pure Ti[J]. Iron Steel Vanadium Titanium, 2025, 46（1）: 40-44. doi: 10.7513/j.issn.1004-7638.2025.01.006 [10] KARIMI S, FRASER N, ROBERTS B, et al. A review of metallic bipolar plates for proton exchange membrane fuel cells: materials and fabrication methods[J]. Advances in Materials Science and Engineering, 2012, 2012: 1-22. [11] ZHU H, WANG X, MENG W, et al. Effects of heat treatment on microstructures and properties of cold rolled Ti-0.3Ni sheets as bipolar plates for PEMFC[J]. Metals, 2022, 12(5): 792. doi: 10.3390/met12050792 [12] KONG D, FENG Y. Electrochemical anodic dissolution kinetics of titanium in fluoride-containing perchloric acid solutions at open-circuit potentials[J]. Journal of the Electrochemical Society, 2009, 156(9): C283. doi: 10.1149/1.3153148 [13] SHAN D F, SHEN G X, PENG S L, et al. Preparation of carbon-doped titanium nitride corrosion-resistant coating on surface of titanium bipolar plates[J]. Rare Metals and Cemented Carbides, 2023, 51(1): 86-91. (单东方, 申桂鑫, 彭善龙, 等. 钛双极板表面碳掺杂氮化钛耐腐蚀涂层制备[J]. 稀有金属与硬质合金, 2023, 51(1): 86-91). doi: 10.19990/j.issn.1004-0536.2023.01.086.06SHAN D F, SHEN G X, PENG S L, et al. Preparation of carbon-doped titanium nitride corrosion-resistant coating on surface of titanium bipolar plates[J]. Rare Metals and Cemented Carbides, 2023, 51（1）: 86-91. doi: 10.19990/j.issn.1004-0536.2023.01.086.06 [14] WANG Z B, HU H X, ZHENG Y G, et al. Comparison of the corrosion behavior of pure titanium and its alloys in fluoride-containing sulfuric acid[J]. Corrosion Science, 2016, 103: 50-65. doi: 10.1016/j.corsci.2015.11.003 [15] BALUSAMY T, JAMESH M, KUMAR S, et al. Corrosion resistant Ti alloy for sulphuric acid medium: suitability of Ti-Mo alloys[J]. Materials and Corrosion, 2012, 63(9): 803-806. doi: 10.1002/maco.201106275 [16] QIU J K, MA Y J, JI H B, et al. Effect of Mo content on grain growth behaviour and mechanical properties of titanium alloys[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(special 1): s153-s158. (邱建科, 马英杰, 吉海滨, 等. Mo含量对钛合金晶粒长大行为及力学性能的影响[J]. 中国有色金属学报, 201323(special 1): s153-s158.QIU J K, MA Y J, JI H B, et al. Effect of Mo content on grain growth behaviour and mechanical properties of titanium alloys[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(special 1): s153-s158. [17] ROJAS N, SÁNCHEZ-MOLINA M, SEVILLA G, et al. Coated stainless steels evaluation for bipolar plates in PEM water electrolysis conditions[J]. International Journal of Hydrogen Energy, 2021, 46(51): 25929-25943. doi: 10.1016/j.ijhydene.2021.03.100 [18] MA J, ZHANG B, FU Y, et al. Effect of cold deformation on corrosion behavior of selective laser melted 316L stainless steel bipolar plates in a simulated environment for proton exchange membrane fuel cells[J]. Corrosion Science, 2022, 201: 110257. doi: 10.1016/j.corsci.2022.110257 [19] QIN P, CHEN L Y, ZHAO C H, et al. Corrosion behavior and mechanism of selective laser melted Ti35Nb alloy produced using pre-alloyed and mixed powder in Hank’s solution[J]. Corrosion Science, 2021, 189: 109609. doi: 10.1016/j.corsci.2021.109609 [20] AZUMI K, MASAHIRO S. Changes in electrochemical properties of the anodic oxide formed on titanium during potential sweep[J]. Corrosion Science, 2001, 43: 533-546. doi: 10.1016/S0010-938X(00)00105-0 -
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