(中南工業(yè)大學(xué)冶金物理化學(xué)與化學(xué)新材料研究所，長沙410083)
摘 要: 用過渡金屬氧化物作為MH/Ni電池的負(fù)極添加劑，研究了它對MH/Ni電池容量、放電電壓、電池內(nèi)壓和循環(huán)性能的影響。加入2%的新型負(fù)極添加劑，可以在保證電池容量不受影響的前提下，使MH/Ni電池的放電中值電壓升高約20 mV，以1C倍率電流充電時的最大電池內(nèi)壓減少0.4 MPa, 并顯著提高電池循環(huán)性能。以1C倍率快速充放測試循環(huán)400次時，其容量保持率在90%以上，放電中值電壓為1.216V。
關(guān)鍵字: MH/Ni電池；負(fù)極；過渡金屬氧化物
（Institute of Physicochemistry of Metallurgy and New Chemical Materials,
Central South University of Technology, Changsha 410083, P.R.China）
Abstract:The mixture of several kinds of transition metal oxide has been used as an additive of metal hydride electrode in MH/Ni battery. The effects of the additive on the properties of MH/Ni battery were studied. Compared with the former MH/Ni batteries, the new ones with two percent novel additive in metal hydride electrode have excellent performances such as higher discharge voltage(by 20mV, approx.), lower charge inner pressure(by 0.4MPa, approx.), and longer cycle life when charged/discharged at 1C rate.
Key words: MH/Ni battery; negative electrode; transition metal oxide
