基于微控共轭聚合物的多孔硬炭及其复合物负极材料的结构调控与储锂特性研究
Project Number21466020
张庆堂
Abstract首次不可逆容量大、循环寿命差是硬炭负极材料的固有缺点,很大程度限制了硬炭锂离子电池负极材料的应用。为最大限度克服硬炭的这些缺点,项目拟通过合成新型单体及选择单体之间物质的量之比,来调控微孔共轭聚合物(CMP)的空间结构,进而调控其炭化产物(多孔硬炭)的空间结构,探索制备高性能多孔硬炭及其复合物负极材料,并考察其比容量、倍率性能、循环寿命等电化学性能。研究CMP和多孔硬炭的空间结构之间的关系、多孔硬炭的空间结构与电化学性能之间的关系、金属氧化物与多孔硬炭的作用机制及对复合物的电化学性能的影响。借助现代分析测试手段,在分子水平上揭示多孔硬炭的空间结构与电化学性能之间的构效关系、金属氧化物与多孔硬炭的作用机制与其电化学性能之间的关系。项目的实施不但可能得到高性能具有应用价值的多孔硬炭及其复合物负极材料,而且可为进一步设计、制备高性能新型结构多孔硬炭负极材料提供基础实验数据和科学依据。【英文摘要】Hardcarbonanodematerialshashighirreversiblecapacityandpoorcyclinglifewhichgreatlyrestricttheirapplicationasanodematerialsforlithiumionbatteries.Inordertofurthestovercomethesedrawbacksofhardcarbon,weproposedhereforpreparationofaseriesofnovelporoushardcarbon(PHC)carbonizedformconjugatedmicroporouspolymerswithhighcapacity,highrate,longcyclinglifeasanodeforlithiumionbatteries.ThestructureofthePHCcanbecontrolledbythestructureofconjugatedmicroporouspolymer(CMP),andthenthestructureofCMPcanbetunedbyusingvariousas-synthesizedmonomersorselectionoftheirmoleratiosduringpolymerizationprocedure.TheelectrochemicalperformanceofPHCasanodeforlithiumionbatterieswillbeevaluated.TheeffectofporositypropertiesbetweenthePHCandCMP,porositiesofPHCanditselectrochemicalperformance,aswellasmechanismofactionmetaloxideandPHCanditselectrochemicalperformancewillbeinvestigated.Bycombinationwithmodernanalysis/measurement,therelationshipbetweentheelectrochemicalperformanceandthestructureoftheas-synthesizedPHC,andmechanismofactionmetaloxideandPHCanditselectrochemicalperformancewillbestudiedatthemolecularlevel.Theimplementationoftheproposedprojectwillnotonlypossiblydevelopnovel,highperformanceanodematerialswithgreatpotentialsforpracticaluseinthefieldoflithiumionbatteries,butalsoprovidebasicexperimentalresultsandscientificevidenceforfurtherdesign,preparationofnewstructuralanodematerialsforlithiumionbatterieswithhighperformance.
Subtype地区科学基金项目
Project Source国家自然科学基金
2015-01
End Date2018-12
MOST Discipline Catalogue05 - 化学科学 ; 0507 - 化学工程与工业化学
Host Institution兰州理工大学
Project Funding500000.0
CountryCN
Language中文
Document Type项目
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64745
Collection石油化工学院
Recommended Citation
GB/T 7714
张庆堂.基于微控共轭聚合物的多孔硬炭及其复合物负极材料的结构调控与储锂特性研究.2015.
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