简介:BaojiNo.2PowerPlantsituatedatShitoupevillage,ChangqingTownship,FengxiangCounty,BaojiCity,hasaplannedgeneratingcapacity4×300MW,andatotalcapitalinvestment6.25billionyuanRMB.TheStateInvestmentBankandShaanxiProvincialgovernmentinvests70%and30%respectively.Thefirstunitisplannedtobecommissionedin1998,andtotallycompletedintheyear2000.TheBaojiNo.2PowerPlantprojectislistedasastatekeyconstructionprojectinthe9thFive-yearPlanperiodandtakenalsoasademonstrativeoptimizingand
简介:用扫描电镜、X-射线衍射、等离子体原子发射光谱、热重分析、循环伏安、恒电流充放电、交流阻抗法研究了溶胶-凝胶法合成的尖晶石锂锰氧化物的物理化学性能,并与熔盐法合成样品作了比较.熔盐法制备的样品的颗粒为不规则块状,初始容量低(99.6mAh/g),而溶胶-凝胶法制备样品的颗粒细小、均匀,初始容量较高(112.5mAh/g).但是熔盐法制备的样品经30次循环后容降为15%,而溶胶-凝胶的却高达40%.熔盐法制备的样品中实际Li/Mn为0.506,与原料中Li/Mn摩尔比相近,而溶胶-凝胶法只有0.473,比原料中的小.熔盐法制备的样品为纯尖晶石结构,而溶胶-凝胶法制备的有杂相Mn2O3生成.热处理过程中部分Li的挥发损失和非电化学活性Mn2O3的生成导致锂锰氧化物容量快速下降.