imgboxbg
Your location:
Homepage
/
/
/
Needle coke products are favored by battery anode material manufacturers

Needle coke products are favored by battery anode material manufacturers

(Summary description)As more and more power battery manufacturers and battery cell manufacturers choose to use artificial graphite anode materials, anode material manufacturers adjust their product structure accordingly. Needle coke is an important variety of artificial graphite anode raw materials. Because of its low price and high quality, it has become the darling of anode material manufacturers.

Needle coke products are favored by battery anode material manufacturers

(Summary description)As more and more power battery manufacturers and battery cell manufacturers choose to use artificial graphite anode materials, anode material manufacturers adjust their product structure accordingly. Needle coke is an important variety of artificial graphite anode raw materials. Because of its low price and high quality, it has become the darling of anode material manufacturers.

Information

As more and more power battery manufacturers and battery cell manufacturers choose to use artificial graphite anode materials, anode material manufacturers adjust their product structure accordingly. Needle coke is an important variety of artificial graphite anode raw materials. Because of its low price and high quality, it has become the darling of anode material manufacturers.

In recent years, more and more power battery manufacturers and battery cell manufacturers have chosen to use artificial graphite anode materials, and anode material manufacturers have adjusted their product structure accordingly. According to an anode material manufacturer in Jiangxi, the proportion of artificial graphite anode material products in the total anode material products has risen from about 30% in 2011 to about 60%. Needle coke, as an important variety of artificial graphite anode raw materials, has become the darling of anode material manufacturers because of its low price and high quality.

In the past two years, the domestic carbon market has entered a low period, product prices and industry profits have fallen sharply, and some companies have even withdrawn from the market. Needle coke products are naturally difficult to take a higher posture, and product prices have also reached historical lows. Therefore, "low cost" has also become one of the important reasons for negative electrode material manufacturers to choose needle coke. It is reported that the current price of imported oil-based needle coke is 1200-1400 US dollars/ton, the price of imported coal-based needle coke is 1000-1100 US dollars/ton, and the price of domestic needle coke is only 5000-7000 yuan/ton.

In addition, needle coke products have excellent performance in the true density and expansion coefficient indicators that have attracted much attention during the production of anode materials, so they are also widely used in high-end anode material products. Although the main demand market for anode materials is still dominated by 3C lithium batteries, the power battery market is the fat in the eyes of anode material manufacturers. The relevant person in charge of the needle coke supplier Sumitomo Corporation stated that the Philip 66 oil-based needle coke products it represents have been well received in Japan and South Korea. In 2014, the sales volume for the anode material market increased significantly, and the total is expected to reach 6000 Around tons.
 

Scan the QR code to read on your phone

Related news

The University of Science and Technology of China has made a major breakthrough in the research of new lithium battery electrode materials 2021-09-22
CCTV,Hefei,October9th(ReporterLiuJun)ThereporterlearnedfromtheUniversityofScienceandTechnologyofChinaonthe9ththattheresearchgroupofProfessorJiXingxingandcollaboratorsoftheschoolhasmadeamajorbreakthroughintheresearchofnewlithium-ionbatteryelectrodematerials:anewlydesignedblackPhosphorouscompositematerialsmakepossiblelithium-ionbatterieswithhighcapacity,fastcharging,andlonglife.Theresultswerepublishedinthe"Science"magazineonOctober9th,Beijingtime.Itisunderstoodthatelectricvehiclesarebecomingmoreandmorepopularinthemarket,butthelongchargingtimeisalsoprohibitive.Traditionalfuelvehiclescanextendarangeof500kilometerswithfullfuelinonlyfiveminutes,whileadvancedelectricvehiclescurrentlyonthemarketneedto"wait"foronehourtoachievethesamerangeextensioneffect.Thedevelopmentofhigh-capacitylithium-ionbatterieswithfastchargingcapabilitieshasalwaysbeenanimportantgoaloftheindustry.Theelectrodematerialisoneofthekeyfactorsthatdeterminethebatteryperformanceindex."Wehopetofindanelectrodematerialthatcannotonlygivetheindustryexpectationsintermsofcomprehensiveperformanceindicators,butalsoadapttotheindustrialbatteryproductionprocess."ProfessorJiHingxingsaid.Theauthorofthethesis,Dr.HongchangJin,introduced:“Energyentersandexitsthebatterythroughthechemicalreactionbetweenlithiumionsandelectrodematerials.Therefore,theconductivityoftheelectrodematerialtolithiumionsisthekeytodeterminingthechargingspeed;ontheotherhand,theelectrodematerialperunitmassorvolumecontainslithiumions.Theamountisalsoanimportantfactor."Accordingtotheintroduction,blackphosphorusisanallotropeofwhitephosphorus.Itsspeciallayeredstructuregivesitstrongionconductivityandhightheoreticalcapacity.Itisanelectrodematerialwithgreatpotentialtomeettherequirementsoffastcharging.However,blackphosphorusispronetostructuraldamagestartingfromtheedgeofthelayeredstructure,andthemeasuredperformanceisfarlowerthantheoreticalexpectations.JiHengxing'steamadoptedan"interfaceengineering"strategytoconnectblackphosphorusandgraphitethroughphosphorus-carboncovalentbonds,whichstabilizedthematerialstructurewhileimprovingtheconductivityoftheblackphosphorus-graphitecompositematerialtolithiumions.Buttheelectrodematerialwillbeenvelopedbychemicalsthatgraduallydecomposeintheelectrolyteduringtheworkingprocess.Somesubstanceswillpreventlithiumionsfromenteringtheelectrodematerial,justlikedustontheglasssurfacehinderslightpenetration.Theresearchteamusedathinpolymergeltomakeadust-proofcoatand"wore"onthesurfaceoftheblackphosphorousgraphitecompositematerialtoallowlithiumionstoentersmoothly."Weusetheconventionalprocessrouteandtechnicalparameterstomaketheblackphosphorouscompositematerialintotheelectrodesheet.Laboratorymeasurementresultsshowthattheelectrodesheetcanrecoverabout80%oftheelectricityafter9minutesofcharging,anditcanstillmaintain90%after2000cycles.Theco-author,XinSenfromtheInstituteofChemistryoftheChineseAcademyofSciencessaid,“Ifmassproductionofthismaterialcanbeachieved,matchingcathodematerialsandotherauxiliarymaterialscanbefound,andthecellstructure,thermalmanagementandOptimizingthedesignoflithiumprotection,etc.,willhopefullyobtainalithium-ionbatterywithanenergydensityof350Wh/kgandafastchargingcapability."Itisreportedthatalithium-ionbatterywithanenergydensityof350watt-hours/kgcanmakethedrivingrangeofanelectriccarcloseto1,000kilometers,whiletheTeslaModelShasadrivingrangeof650kilometersafterbeingfullycharged.Thefastchargingcapabilitywillincreasetheuserexperienceofelectricvehiclestoahigherlevel.
Talking about the anode material of lithium battery 2021-09-22
1.Definition:Thenegativeelectrodematerialisthecarrieroflithiumionsandelectronsinthebatterychargingprocess,andplaystheroleofenergystorageandrelease.Inthecostofthebattery,thenegativeelectrodematerialaccountsforabout5%-15%,anditisoneoftheimportantrawmaterialsforlithium-ionbatteries.2.Asacarrierforlithiumioninsertion,theanodematerialmustmeetthefollowingrequirements:Theinsertionredoxpotentialoflithiumionsinthenegativeelectrodematrixis​​aslowaspossible,closetothepotentialofmetallithium,sothattheinputvoltageofthebatteryishigh;``Alargeamountoflithiuminthematrixcanbereversiblyinsertedanddeintercalatedtoobtainhighcapacity;Duringtheinsertion/de-embeddingprocess,themainstructureofthenegativeelectrodehaslittleornochange;TheredoxpotentialchangeswiththeinsertionandremovalofLishouldbeaslittleaspossible,sothatthevoltageofthebatterywillnotchangesignificantly,andstablecharginganddischargingcanbemaintained;Theinsertioncompoundshouldhavegoodelectronicconductivityandionicconductivity,sothatpolarizationcanbereducedandhighcurrentchargeanddischargecanbecarriedout;ThehostmaterialhasagoodsurfacestructureandcanformagoodSEIwiththeliquidelectrolyte;Theintercalationcompoundhasgoodchemicalstabilityintheentirevoltagerange,anddoesnotreactwithelectrolytesetc.aftertheformationofSEI;Lithiumionshavealargediffusioncoefficientinthemainmaterial,whichisconvenientforrapidcharginganddischarging;Fromapracticalpointofview,thematerialshouldbeeconomicalandenvironmentallyfriendly.Three,carbon-basedanode:Fourth,silicon-basedanodematerialsaremainlydividedintotwocategories:1,crystallinesiliconmaterial;advantage:highcapacity,(4200mAh/g(Li4.4Si)),Disadvantages:Thevolumeexpansioncanreach300%,whichwillnotonlycausetheparticlesoftheSianodetobreak,butalsodamagetheconductivenetworkandbindernetworkoftheelectrode,resultinginthelossofactivematerials,whichwillseriouslyaffectthecycleperformanceofthesiliconanodematerial.TherearethreemainideasforsolvingtheproblemoflargevolumeexpansionofSimaterials:1)Nanometerization:Nanoparticlescanreducethedamageofthematerialparticlesandelectrodescausedbyvolumeexpansion,buttheyarelargerthanthetableandaffectthefirsteffect;andthemethodhasahighcost,acomplicatedprocess,andadifficultpreparation.2)Sicrystalmaterialswithspecialshapes,suchashoneycombmaterialsanddendriticSimaterials,usethedeformationoftheSimaterialitselftoabsorbthevolumechangeduringcharginganddischargingandimprovethecycleperformanceoftheSimaterial;butthecompactiondensityissmall,andtheprocessTheprocessiscomplicatedandthepreparationisdifficult.3)Si/Ccompositematerial,throughthecombinationofSiandgraphitematerial,thegraphitematerialisusedtobufferthevolumechangeoftheSimaterialduringthecycle,soastoimprovethecycleperformanceoftheSimaterial.Althoughtheexpansionspaceisreservedandthecycleperformanceisimproved,thecompactiondensityissmallandtheindustrializationisdifficult.Atpresent,scholarsatCentralSouthUniversityhavepreparedacompositeSianodematerialofsilicon,graphite,carbonnanotubesandpitchbyspraydrying.2,siliconoxidematerialSiliconoxide:Thevolumeexpansionissmall,butthefirsteffectistoolow.ThevolumeexpansionofSiOxmaterialismuchsmallerthanthatofcrystallinesiliconmaterial,butitsexpansionlevelisstillmuchhigherthanthatofgraphitematerials.Therefore,thedevelopmentofSiOxmaterialstillneedstofocusonthevolumeexpansionproblemtoreducethematerialparticlecrushingandpulverizationduringthecycle.,Improvethecyclelifeofthematerial.Therefore,nanoizationisalsoacommonmethodforSiOxmaterials;thereisalsotheuseofhigh-energyballmillingtotreatSiOxmaterials,reducingtheparticlesizeofSiOxmaterials,therebyimprovingthecycleandrateperformanceofthematerial,butthefirstefficiencyofthematerialisonly63%.InordertosubstantiallyimprovetheefficiencyofSiOxmaterialsforthefirsttime,KAISTdevelopedaSi-SiOx-Ccompositestructuresiliconanodematerial.NanoSiparticlesaredispersedinSiOxparticles,andthesurfaceoftheparticlesiscoveredwithalayerofporousCarbonmaterial.Electrochemicaltestsshowthatthematerialhasexcellentelectrochemicalperformance,withareversiblecapacityof1561.9mAh/gat0.06C,afirstefficiencyof80.2%,100cyclesof1C,andacapacityretentionrateof87.9%.5.LithiummetalanodematerialMetallithiumisoneofthemetalswiththelowestdensity.Thestandardelectrodepotentialis-3.04Vandthetheoreticalspecificcapacityis3860mAh/g.Fromthisdata,itissecondonlyto4200mAh/gofsilicon.Applicationareas:Lithium-sulfurbattery(2600wh/kg),lithium-airbattery(11680wh/kg),etc.Lithiummetalbatterieshavehighcapacityperformance,butinuse,duetothepresenceoflithiumdendrites,negativeelectrodeprecipitation,negativenegativesidereactions,whichseriouslyaffectthesafetyofthebattery,itisintheconceptualstageatthisstage.Lithium-sulfurbattery.Sulfurisalsoaverywidespreadelementinnature.Thehigherenergydensity(2600wh/kg)oflithium-sulfurbatteriesmaybethefocusofthenextgenerationoflithiumbatteryresearchanddevelopment.Lithium-airbattery.Lithium-airbatteryhasaveryhighenergydensity(11680wh/kg),whichisclosetotheenergydensityoffuel,andisenvironmentallyfriendly.Thereactionproductiswater.VI.Lithiumtitanateanodemater
What is lithium hydroxide? Introduction to the characteristics and uses of lithium hydroxide 2021-09-22
Lithiumhydroxideisasmallwhitemonocliniccrystal.Lithiumhydroxidehasaspicytasteandstrongalkalinity.Lithiumhydroxideisplacedintheair,itwillabsorbcarbondioxideandmoisture.Itisachemicalsubstancesolubleinwater.Lithiumhydroxideisslightlysolubleinethanolandinsolubleinether.Itisacorrosivesubstance.ThecharacteristicsoflithiumhydroxideLithiumhydroxideisaninorganicsubstancewiththechemicalformulaLiOHandtheEnglishnameLithiumhydroxide.Itisasmallwhitemonocliniccrystalwithaspicytaste,strongalkalinityandcorrosiveness.ThepHofa1mol/Lsolutionisabout14,pKb=-0.04.Itcanabsorbcarbondioxideandmoistureintheair,solubleinwater,slightlysolubleinethanol,andinsolubleinether.Therelativedensityis1.45,themeltingpointis471°C(anhydrous),anditdecomposesat925°C.AvailableinanhydrousandmonohydrateformsUseoflithiumhydroxideLithiumhydroxideisanimportantbasiclithiumsaltproduct.Lithium-basedgreasepreparedfromlithiumhydroxidehastheadvantagesoflongservicelife,oxidationresistance,andhightemperaturestability;lithiumhydroxidecanbeusedasadevelopingagentforspectralanalysis,Lubricant,asanadditiveforalkalinestoragebatteries,lithiumhydroxidecanincreasethestoragecapacityandprolongtheservicelifeofthebattery.Inaddition,lithiumhydroxidehasimportantapplicationsinmetallurgy,atomicenergy,chemicalreagents,aerospace,defenseindustryandotherfields.Itcanbeusedasanabsorbentforcarbondioxideandcanpurifytheairinthesubmarine.Usedtomakelithiumsaltandlithium-basedgrease,electrolyteforalkalinestoragebatteries,lithiumbromiderefrigeratorabsorbingliquid,lithiumsoap(lithiumsoap),lithiumsalt,developer,etc.orasanalyticalreagents;petroleum,chemical,lightindustry,Usedinthenuclearindustry.Whenusedinalkalinestoragebatteries,thealuminumcontentisnotmorethan0.06%,andtheleadcontentisnotmorethan0.01%.Usedasananalyticalreagent,photographicdeveloper,andalsousedinthemanufactureoflithium;itistobeusedasarawmaterialforthepreparationoflithiumcompounds.Itcanalsobeusedinmetallurgy,petroleum,glass,ceramicsandotherindustries.
Tilted graphene structure may promote the development of quantum computing 2021-09-22
Grapheneisamaterialwithextremelylowresistivity.Electronscanefficientlymigrateinthematerial,whichismuchhigherthantherateofelectronsintraditionalsemiconductorsandconductorssuchassiliconandcopper.Thismakesgrapheneveryconductive.Sincegraphenewasdiscoveredin2004,scientistshavebeenlookingforwaystoputthis2Dmaterialintouse.Becauseofitsatomicallythinstructure,coupledwithstrongelectronsandthermalconductivity,ithasshowngreatpotentialinthedevelopmentofelectronicandstoragedevices.Recently,researchersfromBrookhavenNationalLaboratory,Pennsylvaniaandotheruniversitieshavediscoveredthemovementmechanismofelectronsintwodifferentconfigurationsofdouble-layergraphene(carbonintheformofatomicthickness).Inthefuture,itmayprovidenewideasforthedevelopmentofamorepowerfulandsaferquantumcomputingplatform.Normally,computerchipsarebasedonanunderstandingofhowelectronsmoveinsemiconductors,especiallysilicon.However,thephysicalpropertiesofsiliconarereachingalimit,thatis,howsmalltransistorscanbemadeandhowmanycanbeaccommodatedonachip.Ifwecanunderstandhowelectronsmoveonasmallscaleofafewnanometersinthereducedsizeoftwo-dimensionalmaterials,itmaybepossibletounlockanotherwayofusingelectronsforquantuminformationscience.Often,whenamaterialisdesignedtothesesmallscales,reachingasizeofafewnanometers,itwillconfinetheelectronstoaspacewiththesamesizeasitsownwavelength,resultinginchangesintheoverallelectronicandopticalpropertiesofthematerial.ThisprocessiscalledItisquantumconfinement.Forthisreason,researchersusegraphenetostudytheseconfinementeffectsofelectronsandphotons(orlightparticles).Researchersuseauniquegradientalloygrowthsubstratetogrowgraphenewiththreedifferentdomainstructures:singlelayer,Benalstack,andtwisteddoublelayer.Thegraphenematerialisthentransferredtoaspecialsubstrate,allowingtheresearcherstodetecttheelectronicandopticalresonancesofthesystem.Thedetectionresultshows:theelectronmovesbackandforthatthesamefrequencyonthe2Dinterface.Intheconfiguration,thedistancebetweenthetwolayersofmaterialissignificantlyincreased,whichaffectshowelectronsmoveduetotheinteractionbetweenthelayers.Inaddition,tiltingoneofthegraphenelayersby30degreeswillalsoshifttheresonancetoalowerenergy,andtheelectronscanincreasetheinter-layerspacingmovinginit.Inthefuture,researcherswillusetiltedgraphenetomakenewdevices,andonthebasisoftheresultsofthisstudy,observehowtheadditionofdifferentmaterialstothelayeredgraphenestructureaffectsdownstreamelectronicandopticalproperties.
Online Message
图片

Contact Us

Contact Number: +86-731-52653988 E-mail: admin@hnydxny.cn
Contact Us
  • WeChat public account WeChat public account

Copyright © Hunan Yide New Energy Technology Co.,Ltd.        湘ICP备2021013290号

Copyright © Hunan Yide New Energy Technology Co.,Ltd.
湘ICP备2021013290号