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Influence of Cr or Co doping on electrode properties of V_(2.1) TiNi_(0.5) Hf_(0.05) hydrogen storage alloy

Influence of Cr or Co doping on electrode properties of V_(2.1) TiNi_(0.5) Hf_(0.05) hydrogen storage alloy
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摘要 The microstructures and electrode properties of Cr or Co-doped V2.1 TiNi0.5 Hf0.05M 0.113 （M=Cr, Co） hydrogen storage alloys were investigated. It is found that all alloys consist of a main phase of V-based solid solution with b.c.c. structure and a secondary phase of C14-type Laves phase with a three-dimensional network structure. After the doping of Cr or Co into V 2.1TiNi 0.5Hf 0.05, the abundance and unit cell volume of the main phase decrease, and those of the secondary phase increase. The electrochemical measurements show that the discharge capacities of Cr-doped V2.1 TiNi0.5 Hf0.05Cr 0.113 alloy and Co-doped V2.1 TiNi0.5 Hf0.05Co 0.113 alloy are less than that of V2.1 TiNi0.5 Hf0.05 alloy, but their cycle stability and high-rate dischargeability are improved markedly. The results show that Cr or Co doping into V2.1 TiNi0.5 Hf0.05 alloy is significantly beneficial for the cycling stability. The microstructures and electrode properties of Cr or Co-doped V2.1 TiNi0.5 Hf0.05 M0.113 （M = Cr, Co） hydrogen storage alloys were investigated. It is found that all alloys consist of a main phase of V-based solid solution with b. c. c. structure and a secondary phase of C14-type Laves phase with a three-dimensional network structure. After the doping of Cr or Co into V2.1 TiNi0.5 Hf0.05, the abundance and unit cell volume of the main phase decrease, and those of the secondary phase increase. The electrochemical measurements show that the discharge capacities of Cr-doped V2. 1 TiNi0. 5 Hf0. 05 Cr0. 113 alloy and Co-doped V2. 1 TiNi0. 5 Hf0.05 Co0. 113 alloy are less than that of V2. 1 TiNi0. 5- Hf0.05 alloy, but their cycle stability and high-rate dischargeability are improved markedly. The results show that Cr or Co doping into V2. 1 TiNi0.5 Hf0.05 alloy is significantly beneficial for the cycling stability.
作者 陈立新 郭蕊 李露 雷永泉
机构地区 College of Materials Science and Chemical Engineering
出处 《中国有色金属学会会刊：英文版》 EI CSCD 2005年第5期1021-1025,共5页 Transactions of Nonferrous Metals Society of China
基金 Project(50271064)supportedbytheNationalNaturalScienceFoundationofChina Project(2003AA515021)supportedbytheHi-TechResearchandDevelopmentProgramofChina
关键词 铬 钴 储氢合金 电极 三状网结构 电化学 V-based hydrogen storage alloys Cr doping Co doping electrode properties microstructure
分类号 TG139.7 [一般工业技术—材料科学与工程]
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  • 1马建新,陈长聘,潘洪革.无钴AB_5型MlNi_(4.45-x)Mn_(0.40)Al_(0.15)Sn_x电极合金[J].电池,2002,32(z1):98-100. 被引量：13
  • 2Tsukahara M, Takahashi K, Mishima T, et al.Phase structure of V-based solid solutions containing Ti and Ni and their hydrogen absorption-desorption properties[J]. J Alloys and Compounds, 1995, 224(1): 162 - 167.
  • 3Tsukahara M, Takahashi K, Mishima T, et al. Metal hydride electrodes based on solid solution type alloy TiV3Nix(0≤x≤0.75)[J]. J Alloys and Compounds, 1995, 226(1-2): 203-207.
  • 4Tsukahara M, Takahashi K, Mishima T, et al. Vbased solid solution alloys with Laves phase network:hydrogen absorption properties and microstructure[J]. J Alloys and Compounds, 1996, 236: 151-155.
  • 5Guo R, Chen L X, Lei Y Q, et al. The effect of Hf content on the phase structures and electrochemical properties of V2.1 TiNi0.5 Hfx (x = 0 -0.25) hydrogen storage alloys[J]. J Alloys and Compounds, 2003,352(1 - 2): 270- 274.
  • 6Guo R, Chen L X, Lei Y Q, et al. The effect of Ni content on the phase structures and electrochemical properties of V2.1 TiNix (x = 0.1-0.9) hydrogen storage alloys[J]. Int J Hydrogen Energy, 2003, 28(8): 803 - 808.
  • 7Choi W K, Tanaka T, Miyauchi R, et al. Electro-chemical and structural characteristics of TiV2.1 Ni0.3surface-modified by ball-milling with MgNi[J]. J Alloys and Compounds, 2000, 299(1 - 2): 141 - 147.
  • 8Choi W K, Tanaka T, Morikawa T, et al. Effect of surface modification of TiV2.1 Ni0.3 by ball-milling with MgNi on charge-discharge cycle performance[J]. J Alloys and Compounds, 2000, 302(1 - 2): 82 - 86.
  • 9Inoue H, Miyauchi R, Tanaka T, et al. Effect of ballmilling with Ni and Raney Ni on surface structural characteristics of TiV2.1 Ni0.3 alloy [J]. J Alloys and Compounds, 2001, 325(1 - 2): 299 - 303.
  • 10Inoue H, Miyauchi R, Shinya R, et al. Charge-discharge characteristics of TiV2. 1 Ni0. 3 alloy surface-modified by ball-milling with Ni or Raney Ni[J]. J Alloys and Compounds, 2002, 330(1-2): 597- 600.

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中国有色金属学会会刊：英文版
2005年 第5期

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