【摘要】 ＭＨ－Ｎｉ电池的发展需要有高性能的正极，而正极的性能又与球型氢氧化镍的结构、性质有关。本文着重介绍了泡沫镍正极中球型氢氧化镍在充放电过程中的结构变化。随着充电量的增加，β－Ｎｉ（ＯＨ）２逐渐转变为β－ＮｉＯＯＨ和γ－ＮｉＯＯＨ；Ｎｉ（ＯＨ）２中Ｚｎ的加入可抑制γ－ＮｉＯＯＨ的生成，这对减少正极的膨胀是有利的；另外，充电制式的不同，也会影响正极中Ｎｉ（ＯＨ）２晶型的变化。更多还原

【Abstract】 The development of Ni MH batteries requires high quality nickel cathodes, whose performances are related to the structure and characteristic of spherical Ni(OH) 2. In this paper the structure changes of spherical Ni(OH) 2 in foam type nickel cathodes during charge/discharge process have been emphatically introduced. The experimental results demonstrate that β NiOOH is gradually changed into β NiOOH and γ NiOOH with the increase of the charging capacity and the addition of zinc in Ni(OH) 2 can prevent γ NiOOH formation, which is very beneficial to the depression of cathode swelling. In additions, the variation of charging regime can also influence the crystal changes of Ni(OH) 2.更多还原