Liion-Battery-introduction锂离子电池介绍.pptx
《Liion-Battery-introduction锂离子电池介绍.pptx》由会员分享,可在线阅读,更多相关《Liion-Battery-introduction锂离子电池介绍.pptx(49页珍藏版)》请在咨信网上搜索。
1、Battrey Chemistry Fundamentals and CharacteristicsSinowealth BP wxlCONTENTSIntroductionLi-ion Battery Fundamentals and Electrical BehaviorMonitoring and SafetyGeneral Battery Characteristics Page 21.2 Li-ion Battery Fundamentals and Electrical Behaviorn1.2.1 Battery Structuren1.2.2 Fundamentalsn1.2.
2、3 Materials and their influencesn1.2.3 Electrical behaviorn1.2.4 Equivalent circuitPage 3Li-ion Battery StructurenCylindrical Li-ion Battery structureSeparator,cathode and anode are around the column.Page 418650Li-ion Battery StructurenPrismatic Li-ion Battery StructurePage 5Li-ion Battery Structure
3、nCoin Li-ion Battery structurePage 6Li-ion Battery StructurenThin Film Li-ion Battery Structure10-100um thinkness.for microminiature device Page 7Li-ion Battery StructurePage 8Li-ion Battery StructurenLi-ion Battery Structure:nAnode nCathodenSeparator nElectrolyte nEnclosure and packagecomponentmate
4、rialexampleAnodeLi-embedded Transition metal oxidesLiCoO4,LiMnO4,LiCoMnOx,LiFePO4CathodeLi-embeddable compound etc.(synthetic)graphiteElectrolyteLiPF6 alkyl acid estersEC,PC,EDCSeparatorpolyene porous membranePE,PP,PP/PE/PPEnclosure and packagemetalsteel,aluminumPage 9Li-ion Battery Performance requ
5、irements of anode materialsnhigh specific energynhigh specific powernlow self-discharge rationlow costnlong lifenhigh safety levelPage 10Capacity Calculation:1mol Li+,Q=96500C(F=NA*e=96500C/mol)1C=1AsTake LiFePO4 for example:The formula weight of LiFePO4 is 157.756 g/mol,(1g/157.756g/mol)*96500C/mol
6、/3600s=170 mAh/gThe formula weight of LiCoO2 is 97.88 g/mol,(1g/97.88g/mol)*96500C/mol/3600s=274 mAh/gLi-ion Battery Capacity Calculation for AnodePage 11LiFePO4LiMnOxLiCoO2LiNiO2LiNiCoMnO2main componentLiFePO4LiMn2O4LiMnO2LiCoO2LiNiO2LiNiCoMnO2ennergy density(mAh/g)170 ideal148286274274278130-140 a
7、ctual100-120200135-140190-210155-165voltage(V)3.2-3.73.8-3.93.4-4.33.62.5-4.13.0-4.5cycle life2000500inferior300inferior800transition metalvery richrichrichpoorrichpoorenvironmantalnon-poisonousnon-poisonousnon-poisonousradioactivity(Co)poisonous(Ni)poisonoussafetygreatgoodgoodbadbadnot badtemp()-20
8、7550low temp stable-20 55N/A-20 55Li-ion Battery anode materials and their peformancesPage 12LiCoO2LiMn2O4poor safety,high costSynthesis difficult serious attenuationLiNiO2Li-ion battery anode materialsPage 13Li-ion battery anode material developmentpower fieldcommunication fieldLiFePO4LiMn2O4Li-ter
9、nary compoundLiNiO2Ni-Hlead-acidLiCoO2power field:LiFePO4 and LiMn2O4 have the advantages of low cost,safety and heat minocation field:Li-ternary compound and LiNiO2 have higher specific energy.Li-ion battery anode materialPage 14Li-ion battery Performance requirements of cathode materialsnLi+can be
10、 embed and seperated rapidly.ngood reversibility of Li+reaction with seldom crystal structure change.nweak electric potential change in the reaction process.ngood surface texture(Solid Electrolyte Interface Film,SEI)stability and compactednlarge diffusion coefficient for Li+diffusion in cells,easy t
11、o charge quickly.Page 15cathode materialsungraphitisedungraphitisedcarboncarbongraphite graphite stratified structurestratified structureTransition metal oxidessilica-basedmaterialLi4Ti5O12spinel structuretin-basedmaterialmetal LiLi-ion battery Cathode materialsPage 16synthetic graphitesilicon carbo
12、n alloyLi-ion battery cathode materials performancecathode materialscapacityprocess-abilitytemperature stabilitydisadvantagesgraphite carbon360mAh/geasygoodlow capacitySi alloy2500mAh/geasygoodvolume change Sn alloy800-900mAh/ghardbadbad porformance for high rate discahrgemetal Li3860mAh/geasybadden
13、dritic crystalPage 17carbon materials potential risk Li4Ti5O12large mount of capacity,less expension,long cycle life and storage life,surpport quick charge.etc.Metal lithium is deposited on the carbon surface.It can explosively react with a variety of materials.Burning,explode and gas expansion are
14、all protential safety problems.carbon materialsLi4Ti5O12Fig.Li4Ti5O12 SEM photo and its chg/dsg performanceLi-ion battery cathode materialsPage 18二次锂电池正负极材料电压二次锂电池正负极材料电压-容量分布图容量分布图Voltage versus capacity for positive-and negative-electrode materials presently used or under serious considerations fo
15、r the next generation of rechargeable Li-based cells.Li-ion battery electrode Voltage-Capacity distributionPage 19Fig.2 electrolyte product manufacture processLi-ion battery electrolytenElectrolyte is one of four major part of the Li-ion battery,which plays an important role in Li+transfer and has a
16、n effect on Capacity,work temperature range cycle and safety of the battery.nElectrolyte is usually 15%of the total weight and 32%of total volume,and its purity is worth attention in the manufacturing process.raw-materialsolvent-preparepurificationfine purificationelectrolytesolution preparestirfini
17、shed productPage 20nkeep liquid state in large temperature range,high Li+conductivity(10-2S/cm).ngood chemical and heat stability,hard to evaporation and reaction with others.nhigh protential up to 4.5V(vs.Li/Li+)。nnon-toxicneasy to prepare,low costLi-ion battery Performance requirements of electrol
18、yte materialsPage 21nsafety,stability,compatibility with cathode,conductivity,high dielectric constant,low viscosity.ncomposed by solvent and additive中文名称short namedielectric constantviscosity(mPas)melting point()boiling point()decomposition voltage(V)乙烯碳酸酯EC901.9372385.8丙烯碳酸酯PC652.5-492425.8二甲基碳酸酯D
19、MC3.10.593905.7二乙基碳酸酯DEC2.80.75-431275.5乙基甲基碳酸酯EMC2.90.65-55108-二甲醚DME7.20.46-58844.9solventLi-ion battery electrolyte solventPage 22Li-ion battery electrolyte additiveAdditive NameApplicationComponent亚乙烯碳酸酯improve SEI film performanceSO2/Co2/VC磷酸三甲酯improve eletrolyte safetyTMP冠醚和穴状化合物improve electr
20、olyte conductivityether,etc.金属氧化物和盐balance acid concentrationAl2O3,MgO,BaO,Li/CaxCOyPage 23n1.liquid state,solution.high purity solvent,electrolyte(LiPF6),additive.n2.solid state,ploymer.polymer lithium ion battery,LIP.Li-ion battery electrolytePage 24electrolyte classifychemical formulafeatures高氯酸锂
21、LiClO4explosive四氟硼酸锂LiBF4stability,poor conductivity and cyclity六氟砷酸锂LiAsF6effeciency,stability,but cost high and poisonous六氟磷酸锂LiPF4good conductivity,poor thermal stability三氟甲基磺酰LiN(SO2CF3)good thermal stability and cyclity,but poor conductivity双草酸硼酸锂LiBOBgood thermal stability and chemical stabili
22、ty,but low solubility and poor conductivityplay an improtant role in:nkeep anode and cathode separatenallow ion to pass through itself and charge to transferLi-ion battery separatorPage 25Li-ion battery separator performanceabilitypurposeperformanceposition separator,insulationanode and cathode part
23、icles isolation aviod slef-discharging,internal short circuitporinessLi-ion transferhigh conductivity,low internal impendancechemical stabilityno reaction and consumptionlong storage lifeelectrolyte wettabilityfully contactedion conductivitylong cycle lifemechanical propertyin case of crack by force
24、 from dendritic crystal or the other.long storage lifeself-protectpores close when temperature risesafetyPage 26nporous ploymer thin film(PP,PE,PP/PE/PP)nmechanical property,wettablity,pore close temp point and fusing point conflictnnon-woven fabrics,Separion 无纺布型nhigh porosity nanofiber filmnSepari
25、on thin filmnploymer electrolytensolid,gelLi-ion Battery SeparatorPage 27Celgard2400 separator,PP,25m,37%porosity,0.117m*0.042m pore size Li-ion battery separator examplePage 28Li-ion Battery CharacteristicsnChemical Capacity and EnergynBattery ImpedancenUsable CapacitynPower CapabilitynCycle Life,D
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Liion Battery introduction 锂离子电池 介绍
1、咨信平台为文档C2C交易模式,即用户上传的文档直接被用户下载,收益归上传人(含作者)所有;本站仅是提供信息存储空间和展示预览,仅对用户上传内容的表现方式做保护处理,对上载内容不做任何修改或编辑。所展示的作品文档包括内容和图片全部来源于网络用户和作者上传投稿,我们不确定上传用户享有完全著作权,根据《信息网络传播权保护条例》,如果侵犯了您的版权、权益或隐私,请联系我们,核实后会尽快下架及时删除,并可随时和客服了解处理情况,尊重保护知识产权我们共同努力。
2、文档的总页数、文档格式和文档大小以系统显示为准(内容中显示的页数不一定正确),网站客服只以系统显示的页数、文件格式、文档大小作为仲裁依据,平台无法对文档的真实性、完整性、权威性、准确性、专业性及其观点立场做任何保证或承诺,下载前须认真查看,确认无误后再购买,务必慎重购买;若有违法违纪将进行移交司法处理,若涉侵权平台将进行基本处罚并下架。
3、本站所有内容均由用户上传,付费前请自行鉴别,如您付费,意味着您已接受本站规则且自行承担风险,本站不进行额外附加服务,虚拟产品一经售出概不退款(未进行购买下载可退充值款),文档一经付费(服务费)、不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
4、如你看到网页展示的文档有www.zixin.com.cn水印,是因预览和防盗链等技术需要对页面进行转换压缩成图而已,我们并不对上传的文档进行任何编辑或修改,文档下载后都不会有水印标识(原文档上传前个别存留的除外),下载后原文更清晰;试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓;PPT和DOC文档可被视为“模板”,允许上传人保留章节、目录结构的情况下删减部份的内容;PDF文档不管是原文档转换或图片扫描而得,本站不作要求视为允许,下载前自行私信或留言给上传者【天****】。
5、本文档所展示的图片、画像、字体、音乐的版权可能需版权方额外授权,请谨慎使用;网站提供的党政主题相关内容(国旗、国徽、党徽--等)目的在于配合国家政策宣传,仅限个人学习分享使用,禁止用于任何广告和商用目的。
6、文档遇到问题,请及时私信或留言给本站上传会员【天****】,需本站解决可联系【 微信客服】、【 QQ客服】,若有其他问题请点击或扫码反馈【 服务填表】;文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“【 版权申诉】”(推荐),意见反馈和侵权处理邮箱:1219186828@qq.com;也可以拔打客服电话:4008-655-100;投诉/维权电话:4009-655-100。