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Effect of B and Fe substitution on structure of AB3-type Co-free hydrogen storage alloy WU Feng(吴 锋)1, 2, ZHANG Min-yu(张旻昱)1, MU Dao-bin(穆道斌)1, 2 1. Beijing Key Laboratory... at the discharge rate of 500 mA/g with a high HRD value of 73.19%. Key words: Ni-MH battery; AB3-type; B substitution; Co-free hydrogen storage alloy 1 Introduction Today, batteries with high capacity......
Abstract: The effects of the alloy preparation methods, including the conventional casting, annealing and melt-spinning, on the crystallographic and electrochemical properties of the Co-free... dischargeability, and the improved cycling stability is due to their lower volume expansion on hydriding and more uniform composition. Key words: hydrogen storage alloy; Co-free alloy; material processing......
:hydrogen storage materials; electrochemical properties; Co-free AB5-type alloy; rare earths; [全文内容正在添加中] ... invariably present in all alloy samples, and when x≥0.4, (Fe,Ni) phase was observed. Electrochemical studies revealed that the discharge capacity reached a maximum value of 306.4 mAh/g when x=0.2......
Phase structure and electrochemical performances of Co-free La–Mg–Ni-based alloys with Nd/Sm partial substitution for LaZhi-Ping Liu1,Shu-Qin Yang2,Yuan Li2,Jing-Jing Liu2,Ming-Zhen Ma1,Shu-Min...="ChDivSummary">In this paper, the Co-free hydrogen storage alloys with the nominal compositions of La0.75R0.05Mg0.20Ni3.40Al0.10(R = La, Nd and Sm) were prepared by induction melting, and then the phase......
to improve the electrochemical cycle stability of the Co-free AB5-type hydrogen storage alloy, Co-free LaxMm1-x(NiMnSiAlFe)4.9 (x=0, 0.45, 0.75, 1.00, mole fraction) hydrogen storage alloys were treated... increases from 0 (the as-cast is defined as the quenching rate of 0m/s) to 28m/s, the capacity retaining rate (Rh) of La0.45 alloy increases from 59.8% to 75.8%. Key words: Co-free AB5-type hydrogen......
treatment on microstructure and electrochemical performances of Co-free MlNi4.0Al0.3Si0.1Fe0.6 hydrogen storage alloy
CHEN Xian-li, LEI Yong-quan, LIAO Bin, WEI Fan-song, CHEN Li-xin
(College...) of annealed alloys.
Key words: hydrogen storage electrode alloy; Co-free alloy; annealing treatment; microstructure; electrochemical property
有显著提高,有望降低合金材料成本的同时提高材料的环境友好性.
关键词:无Co贮氢和金; AB_3; 真空熔炼法; Co-free dydrogen storage alloy; AB3-type; vacuum induction melting method;
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...热处理对AB_3型无Co贮氢合金电化学性能的研究
张旻昱1,吴锋1,穆道斌1
(1.北京理工大学,化工与环境学院环境科学工程北京重点实验室,北京,100081;2.国家高技术绿色材料发展中心,北京,100081)
摘要:用真空熔炼法制备了多种贮氢合金原样,分别经不同温度,时间热处理和保护气氛下球磨处理.改性前后样品晶体结构用SEM和XRD测试进行结构表征,结果表明合金为LaNi_5和......热处理对AB_3型无Co贮氢合金电化学性能的研究
来源: 《功能材料2009年第12期》——张旻昱 吴锋 穆道斌
words: AB5-type Co-free hydrogen storage alloy; Al content; crystal structure; electrochemical properties 近年来, 基于AB5型贮氢合金的MH电池在功率特性上的优势以及良好的发展前景, 如何降低合金成本和进一步改善其电化学性能仍在世界范围内深入进行研究[1, 2... and electrochemical properties of Co free AB5-type hydrogen storage alloys LUO Yong-chun, YAN Ru-xu, ZHANG Fa-liang, WANG Da-hui, KANG Long, CHEN Jian-hong (State Key Laboratory of Gansu Advanced......
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Composition optimization and electrochemical characteristics of Co-free Fe-containing AB5-type hydrogen storage alloys through uniform design晁栋梁,陈云贵,朱昌荣,吴朝玲,朱丁College of Materials Science... was introduced into the study of composition optimization of Co-free Fe-containing AB5-type alloys for the first time. X-ray diffraction (XRD) results showed that the designed alloys were of single CaCu5-type......