JP2012188728A - 複合水素吸蔵合金及びニッケル水素蓄電池 - Google Patents
複合水素吸蔵合金及びニッケル水素蓄電池 Download PDFInfo
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 1
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- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
- Powder Metallurgy (AREA)
Abstract
【解決手段】I相を有する水素吸蔵合金とAB3型の結晶相を有する水素吸蔵合金とを含有する複合水素吸蔵合金。
【選択図】なし
Description
幅2.5mm×厚さ35μmのTi1.4V0.6Ni合金の帯状体を、アルゴン雰囲気下において、単ロール溶融紡糸法を用いて調製した。このときの銅輪の周速は34m/sであった。La0.65Nd0.12Mg0.23Ni2.9Al0.1の組成を有するAB3型合金は、アルゴン雰囲気下において、誘導浮遊溶解法を用いて調製した。Ti1.4V0.6Ni合金とAB3型合金のサンプルを、機械的に粉砕し、200〜400メッシュの粉末にまで細かくし、80重量%のTi1.4V0.6Ni合金と20重量%のAB3型合金との粉末混合物に対し、高エネルギーボールミルによる30分間の機械的合金化処理を行った。調製された複合合金の帯状体の相は、X線回折法(XRD)により調べられ、微少構造は透過型電子顕微鏡(TEM)により調べられた。
(1)相構造
図1は、AB3型合金、Ti1.4V0.6Ni合金、及び、それらの複合合金のXRDパターンを示すものである。AB3型合金は図1(a)に示され、当該合金が主に、PuNi3型の表面体晶構造(空間グループR3m)を有する(La、Mg)Ni3相と、CaCu5系の六方晶系構造(空間グループP6/mmm)を有するLaNi5相からなることが観察された。Ti1.4V0.6Ni合金に対応する図1(b)の回折ピークは、I相と、Ti2Ni型の面心立方格子構造(FCC)相と、体心立方格子構造(BCC)固溶体相を示した。Ti1.4V0.6Ni合金とAB3型合金との混合物をボールミルにより粉砕した後(図1(c))では、結晶格子の異方性が拡大した結果、(La、Mg)Ni3相とLaNi5相の回折ピークは明らかにブロードになった。
図3は、Ti1.4V0.6Ni合金からなる負極と、Ti1.4V0.6Ni合金とAB3型合金との複合合金からなる負極との、サイクル回数と放電容量との相関を示すグラフである。放電容量はAB3型合金の添加により著しく改善した。放電容量は、AB3型合金を添加しなかったときは、2回目のサイクルで272.7mAh/gの最高値に達し、より高い水素吸蔵特性(340mAh/g)を有するAB3型合金を加えることにより増加し、AB3型合金を20重量%加えた後では、1回目のサイクルで294.7mAh/gの最高値に達した。これは、複合水素吸蔵合金電極中においてAB3型合金とTi1.4V0.6Ni合金との間に相乗効果があることを示す。しかし、AB3型合金を30重量%加えても、それ以上の放電容量の改善効果は見られなかった。
Ti1.4V0.6Ni合金からなる負極(a)と、及び、Ti1.4V0.6Ni合金とAB3型合金との複合体からなる負極(b)との高率放電性能(HRD)を、表1に示した。
Claims (5)
- I相を有する水素吸蔵合金とAB3型の結晶相を有する水素吸蔵合金とを含有することを特徴とする複合水素吸蔵合金。
- 前記AB3型の結晶相を有する水素吸蔵合金を10〜30重量%含有する請求項1記載の複合水素吸蔵合金。
- 前記I相を有する水素吸蔵合金が、少なくともTiを構成元素とするものである請求項1又は2記載の複合水素吸蔵合金。
- 前記I相を有する水素吸蔵合金が、少なくともTi、V及びNiを構成元素とするものである請求項1、2又は3記載の複合水素吸蔵合金。
- 請求項1、2、3又は4記載の複合水素吸蔵合金を含有する負極を備えていることを特徴とするニッケル水素蓄電池。
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CN2011100591027A CN102683653A (zh) | 2011-03-09 | 2011-03-09 | 复合贮氢合金及镍氢蓄电池 |
CN201110059102.7 | 2011-03-09 |
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Cited By (2)
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JP2015537119A (ja) * | 2012-11-16 | 2015-12-24 | ビーエーエスエフ バッテリー マテリアルズ−オヴォニック | 水素吸蔵合金及び負極とこれらを用いたNi金属水素化物電池 |
CN105478746A (zh) * | 2015-12-08 | 2016-04-13 | 艾瑞福斯特(北京)技术开发有限公司 | 一种发动机用耐热铝合金粉 |
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CN103031481A (zh) * | 2012-12-18 | 2013-04-10 | 中国科学院长春应用化学研究所 | 含镁钛钒镍准晶复相储氢合金及其制备方法 |
CN103894602B (zh) * | 2012-12-27 | 2017-02-08 | 北京有色金属研究总院 | 一种提高稀土镁基储氢合金循环寿命的表面处理方法 |
CN103367817B (zh) * | 2013-07-12 | 2016-05-18 | 深圳市量能科技有限公司 | 一种免化成工序的镍氢电池及其制造方法 |
CN104294084B (zh) * | 2014-09-28 | 2017-04-26 | 长春理工大学 | 一种含锂高熵变Ti基准晶储氢合金及其制备方法 |
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CN1315209C (zh) * | 2005-04-30 | 2007-05-09 | 中国科学院长春应用化学研究所 | 快充型贮氢合金电极材料及其制备方法 |
CN100469916C (zh) * | 2007-04-02 | 2009-03-18 | 安徽工业大学 | 激光烧结制备镁基储氢合金及其复合材料的方法 |
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2011
- 2011-03-09 CN CN2011100591027A patent/CN102683653A/zh active Pending
- 2011-04-19 JP JP2011093015A patent/JP2012188728A/ja active Pending
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JP2015537119A (ja) * | 2012-11-16 | 2015-12-24 | ビーエーエスエフ バッテリー マテリアルズ−オヴォニック | 水素吸蔵合金及び負極とこれらを用いたNi金属水素化物電池 |
CN105478746A (zh) * | 2015-12-08 | 2016-04-13 | 艾瑞福斯特(北京)技术开发有限公司 | 一种发动机用耐热铝合金粉 |
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