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Effect of polyaniline on hydrogen absorption-desorption properties and discharge capacity of AB(3) alloy
Qi, Yan-Ni; Chu, Hai-Liang; Xu, Fen; Sun, Li-Xian; Zhang, Yao; Zhang, Jian; Qiu, Shu-Jun; Yuan, Huatang
关键词Ab(3)/pani Composite Hydrogen Storage Capacity Hydrogen Absorption Kinetics Thermodynamics Discharge Capacity
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2007-10-01
DOI10.1016/j.ijhydene.2007.02.032
32期:15页:3395-3401
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Electrochemistry ; Energy & Fuels
研究领域[WOS]Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]ELECTROCHEMICAL PROPERTIES ; STORAGE ALLOYS ; DEHYDRIDING KINETICS ; POLYMER ; HYDRIDE ; LANI3
英文摘要A series of AB(3)/PANI composites were prepared by adding polyaniline (PANI) into La0.7Mg0.25Ti0.05Ni2.975Co0.525 (AB(3)) hydrogen storage alloy, which was prepared by magnetic levitation melting, and the composites were investigated by XRD and SEM. The effects of PANI concentration on the hydrogen absorption-desorption properties and discharge capacities of AB(3) alloy were systematically studied by P-C-T isotherms and LAND battery test system, respectively. The results indicated that the addition of PANI did not change the hydrogen absorption capacity of AB(3) alloy distinctly, while the hydrogen desorption plateau pressure of AB(3) alloy decreased firstly, and then increased with the increase in the PANI concentration, the minimum plateau pressures of 0.022, 0.1, 0.321 and 0.55 MPa were obtained with PANI concentration of 2 wt% at 25, 50, 80 and 100 degrees C, respectively. It was theoretically verified by the changes in enthalpy and entropy of AB(3)/PANI hydrides dehydrogenation which were calculated by Van't Hoff equation. In the present paper, the phenomenon that PANI improved the hydrogen absorption kinetics of AB(3) alloy was found; the influence of PANI concentration on hydrogen absorption kinetics of AB(3) alloy was more apparent at higher temperature. The activation energies of dissolved hydrogen in AB(3)/PANI hydrides were calculated from hydrogen absorption kinetics and the Arrhenius equation. LAND experiments demonstrated that, the AB(3)/PANI electrodes composites possessed higher cycling discharge capacity retention rates than AB(3) electrode alloy. (C) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000250900700041
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140610
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Sch Educ, Beijing 100039, Peoples R China
3.Nankai Univ, Inst New Energy Mat Chem, Tianjin 300071, Peoples R China
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GB/T 7714
Qi, Yan-Ni,Chu, Hai-Liang,Xu, Fen,et al. Effect of polyaniline on hydrogen absorption-desorption properties and discharge capacity of AB(3) alloy[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2007,32(15):3395-3401.
APA Qi, Yan-Ni.,Chu, Hai-Liang.,Xu, Fen.,Sun, Li-Xian.,Zhang, Yao.,...&Yuan, Huatang.(2007).Effect of polyaniline on hydrogen absorption-desorption properties and discharge capacity of AB(3) alloy.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,32(15),3395-3401.
MLA Qi, Yan-Ni,et al."Effect of polyaniline on hydrogen absorption-desorption properties and discharge capacity of AB(3) alloy".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 32.15(2007):3395-3401.
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