另外,活化能的計算顯示,LiNi1/3Co1/3Mn1/3O2Li2MnO3此複合材料在介面的活化能較低(~0.18eV),因此可推測若兩種材料是以奈米化的程度結合,會有較好的擴散特性,對電池快速充放電有利.本文亦藉由兩種不同比例混合之LiNi1/3Co1/3Mn1/3O2Li2MnO3計算,顯示出若LiNi1/3Co1/3Mn1/3O2和Li2MnO3比例為1:1時...
ElectrochimicaActa51(2006)5581–5586PreparationandelectrochemicalpropertiesofLiCoO2–LiNi0.5Mn0.5O2–Li2MnO3solidsolutionswithhighMncontentsYuchengSuna,b,YonggaoXiab,YukiShiosakib,HideyukiNoguchib,∗aVentureBusinessLaboratory,SagaUniversity,Honjo-1.Saga840-8520,JapanbDepartmentofAppliedChemistry,SagaUniversity,...
materials.%本文利用共沉淀法制备了富锂材料xLi2MnO3·(1-x)LiNi0.5Mn0.3Co0.2O2(0.3≤x≤0.7),并进行了X射线衍射( XRD),扫描电子显微镜( SEM),透射电子显微镜( TEM)和恒电流充放电测试.研究了在一定的反应温度下合成出的材料的电化学性能.结果表明, Li1.17 Mn0.48 Ni0.25 Co0.1 O2在0.1 C下的...
Li2Co0.4Mn0.4O2用xLi2MnO3.(1-x)LiMO2表示，x怎么求？求高手详细指点一下 ...
The 0.5Li2MnO3·0.5LiNi0.5Co0.2Mn0.3O2material prepared by using LiOH·H2O displays uniform morphology with nano particle and stable layer structure so that it suppresses the first cycle irreversible reaction and structure transfer, and it delivers the best electrochemical performance. The results ...
以氨水作为络合剂,采用氢氧化物共沉淀法合成了球形富锂锰基正极材料xLi2MnO3·(1-x)Li(Ni1/3Co1/3Mn1/3)O2(x=0.2,0.4和0.6),并对合成的不同组分样品材料的化学成分,结构,形貌和电化学性能进行了表征.结果表明,样品材料的化学组分与其理论含量相同,随着x的增大,材料的粒度变小,在电压范围为2.5~4.6V条...
以氨水作为络合剂,采用氢氧化物共沉淀法合成了球形富锂锰基正极材料xLi2MnO3·(1-x)Li(Ni1/3Co1/3Mn1/3)O2(x=0.2、0.4和0.6),并对合成的不同组分样品材料的化学成分、结构、形貌和电化学性能进行了表征。结果表明,样品材料的化学组分与其理论含量相同,随着x的增大,材料的粒度变小,在电压范围为2.5~4.6...
摘要 本发明公开了一种用于高容量锂离子电池正极材料0.5Li2MnO3·0.5LiMn1/3Ni1/3Co1/3O2及其制备方法。所述制备方法包括以下步骤:将锂盐、锰盐、镍盐和钴盐按质量比加入到蒸馏水中,搅拌及升温使金属盐完全溶解;加入聚乙二醇,然后加入H2C2O4溶液,升温反应,得到粉红色沉淀;将沉淀在真空干燥后升温至450...
Yu S-H, Yoon T, Mun J, Park S, Kang Y-S, Park J-H, Oh SM, Sung Y-E (2013) Continuous activation of Li2MnO3 component upon cycling in Li1.167Ni0.233Co0.100Mn0.467Mo0.033O2 cathode material for lithium ion batteries. J Mater Chem 1:2833-2839...
In the present study, local structural changes in 0.4Li2MnO3–0.6LiMn1/3Ni1/3Co1/3O2, a kind of the layered solid solution, were investigated during initial discharging, in order to clarify the formation mechanism for the stable reversible phase. A pair distribution function (PDF) analysis ...