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21. 发明申请

US20060166099A1 Closed nickel-hydrogen storage battery and its production method 审中-公开
标题翻译：封闭镍氢蓄电池及其制作方法
公开(公告)号：US20060166099A1
公开(公告)日：2006-07-27
申请号：US10542896
申请日：2004-01-19
申请人： Kazuya Okabe , Hiroaki Mori , Kengo Furukawa , Masaharu Watada , Toshiyuki Nukuda
发明人： Kazuya Okabe , Hiroaki Mori , Kengo Furukawa , Masaharu Watada , Toshiyuki Nukuda
IPC分类号： H01M4/66 , H01M4/62 , H01M4/58 , H01M10/04 , H01M4/29
CPC分类号： H01M4/366 , H01M4/242 , H01M4/383 , H01M10/345 , Y02E60/124 , Y02P70/54 , Y10T29/49108
摘要： One problem with a sealed type nickel-metal hydride battery is that the high-rate discharge capability is inferior to that of a nickel-cadmium storage battery, because of a slow transfer rate of charges to the surface of a hydrogen storing alloy that is a negative electrode. Another problem is that the use of an alloy having excellent life characteristics takes much time for initial activation of battery characteristics. The invention provides a solution to the aforesaid problems by the provision of a sealed type nickel-metal hydride battery (1) improved in high-rate discharge capability and charge-discharge cycle characteristics. To this end, the invention is characterized by locating a 50 nm to 400 nm thick nickel-rich layer (11) on the surface of a hydrogen storing alloy powder, and locating the nickel-rich layer (11) as well on the surface of cracks (12) that open at the surface of alloy, and more preferably setting the mass saturation magnetization of the alloy powder at 2.5 to 9 emu/g and the content of magnetic nickel at 0.5 to 1.9 mmol per gram of the hydrogen storing alloy powder. A succession of hydrogen absorption step, alkali treatment step, product removal step, hydrogen desorption step and partial oxidization step by air are applied to the hydrogen storing alloy powder to obtain alloy powder, which is then used to obtain a battery having the aforesaid features. The invention is effectively applied to corrosion-resistant hydrogen storing alloys containing Er, Y and Yb.
摘要翻译：密封型镍氢电池的一个问题在于，由于向储氢合金表面的电荷传递速度慢，所以高速放电能力不如镍镉蓄电池负极。另一个问题是使用具有优异寿命特性的合金对电池特性的初始激活需要很多时间。本发明通过提供一种提高了高倍率放电能力和充放电循环特性的密封型镍氢电池（1）来解决上述问题。为此，本发明的特征在于在储氢合金粉末的表面上定位50nm至400nm厚的富镍层（11），并将富镍层（11）也位于在合金表面开口的裂纹（12），更优选将合金粉末的质量饱和磁化强度设定为2.5〜9emu / g，磁性镍的含量为0.5〜1.9mmol / g储氢合金粉末。将吸氢步骤，碱处理步骤，产物去除步骤，氢解吸步骤和通过空气进行部分氧化步骤的一系列应用于储氢合金粉末以获得合金粉末，然后将其用于获得具有上述特征的电池。本发明有效地应用于含有Er，Y和Yb的耐腐蚀储氢合金。

22. 发明授权

US5393616A Metal hydride electrode 失效
标题翻译：金属氢化物电极
公开(公告)号：US5393616A
公开(公告)日：1995-02-28
申请号：US50025
申请日：1993-04-28
申请人： Hiroyuki Mori , Keiichi Hasegawa , Masaharu Watada , Masahiko Oshitani
发明人： Hiroyuki Mori , Keiichi Hasegawa , Masaharu Watada , Masahiko Oshitani
IPC分类号： H01M4/24 , H01M4/32 , H01M4/38 , H01M4/52 , H01M10/34
CPC分类号： H01M4/242 , H01M10/345 , H01M4/32 , H01M4/383 , H01M4/52 , Y10S420/90
摘要： A metal hydride electrode, in which a metallic cobalt powder is mixed, within a mixing range of 3 to 20 weight percents, with a hydrogen absorbing alloy powder formed by substituting a part of Ni of alloy expressed by a rational formula of MmNi.sub.5 with Al and at least one kind of Fe, Cu, Co, Mn, and the mixed powder is loaded in a porous alkaline-proof metal body. An nickel electrode, in which a cobalt monoxide powder is mixed with an active material powder within a mixing range of 5 to 15 weight percents, the active material powder comprising zinc existing within a range of 2 to 8 weight percents, under a solid solution state in a crystal of nickel hydroxide powder assuming a spherical shape including an inner pore volume of 0.14 ml/g or less, and the mixed powder is loaded in a porous alkaline-proof metal body. A nickel-hydrogen battery, in which the foregoing metal hydride electrode and the foregoing nickel electrode are wound with a separator put between them, aqueous solution of potassium hydroxide is filled therein and sealed, and they are maintained under standing condition for 5 hours or more.
摘要翻译： PCT No.PCT / JP91 / 01445 Sec。 371日期：1993年4月28日 102（e）日期1993年4月28日PCT 1991年10月22日PCT PCT。公开号WO92 / 08251 日期：1992年5月14日。一种金属氢化物电极，其中混合了金属钴粉末，混合范围为3〜20重量％，通过将由合理表示的合金的一部分Ni取代而形成的吸氢合金粉末具有Al的MmNi5配方和至少一种Fe，Cu，Co，Mn，并将该混合粉末装入多孔耐碱金属体中。一种镍电极，其中一氧化钴粉末与活性物质粉末在5至15重量％的混合范围内混合，所述活性物质粉末包含存在于2至8重量％范围内的固体溶液状态在含有内孔体积为0.14ml / g以下的球状的氢氧化镍粉末的结晶中，将该混合粉末装入多孔耐碱金属体。在其中将上述金属氢化物电极和上述镍电极缠绕在其之间的隔板的镍氢电池中填充氢氧化钾水溶液并密封，并将它们保持在静置条件下5小时以上。

23. 发明授权

US5366831A Nickel electrode for alkaline battery 失效
标题翻译：镍电极用于碱性电池
公开(公告)号：US5366831A
公开(公告)日：1994-11-22
申请号：US975579
申请日：1993-02-09
申请人： Masaharu Watada , Masahiko Oshitani , Masuhiro Onishi
发明人： Masaharu Watada , Masahiko Oshitani , Masuhiro Onishi
IPC分类号： H01M4/32 , H01M4/52 , H01M4/62
CPC分类号： H01M4/52 , H01M4/32
摘要： In a paste-type nickel electrode using nickel hydroxide powder controlled to under 0.1 ml/g incl. as an active material so as to be increased in its density, a nickel electrode for alkaline battery in which II-group elements and cobalt are included in the nickel hydroxide powder in solid solution state, so that swelling of electrode can be prevented and charge efficiency at a high temperature can be improved.
摘要翻译： PCT No.PCT / JP92 / 00740 Sec。 371日期：1993年2月9日 102（e）日期1993年2月9日PCT提交1992年6月10日PCT公布。公开号WO92 / 22934 日期为1992年12月23日。在使用控制在0.1ml / g以下的氢氧化镍粉末的糊状镍电极中，作为活性物质以增加其密度，将固体溶液状态的氢氧化镍粉末中含有II族元素和钴的碱性电池用镍电极，能够防止电极膨胀，并且充电效率在高温下可以改善。

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