(天津大學(xué) 化工學(xué)院，天津 300072)
摘 要: 研究2種酞菁類催化劑——酞菁鈷、酞菁鐵作為負(fù)極添加劑對(duì)Ni-MH電池充放電、電池內(nèi)壓及循環(huán)性能的影響。結(jié)果表明：在負(fù)極材料中加入酞菁鈷、酞菁鐵能夠顯著提高電池充放電性能，1C充電至額定容量時(shí)，電池最高電壓分別較對(duì)比電池降低25 mV和31 mV；5C放電時(shí)，中值電壓分別較對(duì)比電池高45 mV和51 mV。電池的循環(huán)性能得到改善，0.5C循環(huán)150次時(shí)，分別剩余額定容量的75%和83%；電池安全性得到提高，電池內(nèi)壓顯著降低。
關(guān)鍵字: Ni-MH電池；電化學(xué)催化劑；內(nèi)壓
（School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China）
Abstract:Abstract: FePc and CoPc were used as cathode additives of Ni-MH battery respectively, and the effects of FePc and CoPc on charge-discharge performance, inner pressure, and cycling performance of Ni-MH battery were studied. The results show that the overcharge resistance of Ni-MH battery increases clearly by adding suitable amount of FePc and CoPc under the condition that the battery capacity isn’t affected. The peaks of voltage of the batteries decrease by 25 mV and 31 mV respectively when charged at 1C; and the set-point voltage increases by 45 mV and 51 mV when discharged at 5C. Cycle performance is improved obviously, and the capacity remains more than 75% and 83% after 150 charge-discharge cycles at 0.5C. Battery inner pressure decreases obviously when overcharged.
Key words: Ni-MH battery; electrocatalyst; inner pressure
