Preparation And Hydrogen Evolution Inhibitors Of Lead-carbon Electrode

In order to alleviate the energy crisis and environmental pollution, allcountries in the world have started to develop new energy vehicles and hybridelectric vehicle (HEV) is a very important part. Traditional lead acid battery hasbeen applied in light hybrid vehicles due to its low price and excellent largecurrent discharge performance.However, the negative plate of traditional lead acidbattery is easy irreversible sulfation under HRPSoC conditions which leads to theshort working time of the lead acid battery.The lead carbon battery cansignificantly delay the irreversible sulfation of the negative plate.Firstly, this paper studied the influence of single specials of carbon materialsP1and P2on the performance of the negative plate.The results showed that theHRPSoC cycle performance can be significantly improved by adding P1or P2.Thenegative plate completed18489HRPSoC micro-cycles in the first cycle-set whenthe concentration of P2is0.9%.The rate capability of the negative plate was alsoimproved by adding P1and P2.Secondly, this paper also studied the influence of mixing carbon materials onthe performance of the negative plate. The results showed that the hydrogenevolution of negative plate was exacerbated and the HRPSoC cycle performanceof negative plate was deteriorated with the increase of graphite content when thecontent of P2was0.9%and the content of graphite is between0.1%and0.5%.The hydrogen evolution of negative plate was exacerbated and the HRPSoC cycleperformance of negative plate was deteriorated with the increase of P3contentwhen the total content of P2and P3was0.9%.By summing up, firstly, the carbonmaterials that added into the negative plate should have good adhesion to Pb andPbSO4. Secondly, the carbon materials should have a large specific surface areaand large pore volume. Thirdly, the carbon materials should have a high electricalconductivity and good capacitive.In order to inhibit hydrogen evolution of the negative plate, Bi2S3,SnO2,carbon Bi2S3composite materials, carbon SnO2composite materials andcarbon materials that deposited indium, tin and lead were added into the negativeplate. The results showed that they can all inhibit the hydrogen evolution of thenegative plate to a certain extent. The HRPSoC cycle performance of the negativeplate that adding Bi2S3deteriorated. The HRPSoC cycle performance of negative plate that adding10%(accounting for the mass fraction of carbon materials)SnO2improved a lot and it completed28191HRPSoC micro-cycles in the first cycle-set.but the negative plate that add3%SnO2and17%SnO2deteriorated. TheHRPSoC cycle performance of negative plate that adding carbon materials thatdeposited lead and tin improved a lot but the The HRPSoC cycle performance ofnegative plate that adding carbon materials that deposited indium was close to theblank battery.The negative plate that adding carbon Bi2S3composite materials and carbonSnO2composite materials had the excellent HRPSoC cycle performance, theHRPSoC micro-cycles in the first cycle-set were35487and32534respectively,1.9times and1.8times that of the blank cell.