Muaj ntau yam ntsuas kev siv tshuab ntawm cov ntaub ntawv graphite anode, thiab nws nyuaj rau coj mus rau hauv tus account, feem ntau suav nrog thaj chaw tshwj xeeb, qhov loj me ntawm cov khoom me me, qhov ceev ntawm lub kais, qhov ceev ntawm kev sib xyaw, qhov ceev tiag tiag, thawj qhov them thiab tso tawm lub peev xwm tshwj xeeb, thawj qhov ua tau zoo, thiab lwm yam. Tsis tas li ntawd, muaj cov ntsuas hluav taws xob xws li kev ua tau zoo ntawm lub voj voog, kev ua tau zoo ntawm tus nqi, o, thiab lwm yam. Yog li, cov ntsuas kev ua tau zoo ntawm cov ntaub ntawv graphite anode yog dab tsi? Cov ntsiab lus hauv qab no yog qhia rau koj los ntawm HCMilling (Guilin Hongcheng), tus tsim khoom ntawmcov ntaub ntawv anode lub tshuab sib tsoo.

01 thaj chaw tshwj xeeb

Hais txog thaj tsam ntawm ib yam khoom rau ib chav pawg. Qhov me dua ntawm cov khoom me dua, qhov loj dua ntawm thaj chaw tshwj xeeb.

Lub electrode tsis zoo nrog cov khoom me me thiab thaj chaw tshwj xeeb siab muaj ntau txoj hauv kev thiab txoj kev luv dua rau kev tsiv teb tsaws chaw lithium ion, thiab qhov kev ua tau zoo dua. Txawm li cas los xij, vim yog thaj chaw sib cuag loj nrog cov electrolyte, thaj chaw rau kev tsim cov zaj duab xis SEI kuj loj, thiab qhov ua tau zoo pib kuj yuav qis dua. . Cov khoom loj dua, ntawm qhov tod tes, muaj qhov zoo ntawm qhov ceev ntawm kev sib zog ntau dua.

Qhov chaw tshwj xeeb ntawm cov khoom siv graphite anode yog qhov tsawg dua 5m2 / g.

02 Kev faib tawm ntawm qhov loj ntawm cov khoom me me

Qhov cuam tshuam ntawm qhov loj me ntawm cov khoom siv graphite anode rau nws cov kev ua haujlwm electrochemical yog tias qhov loj me ntawm cov khoom siv anode yuav cuam tshuam ncaj qha rau qhov ceev ntawm cov kais dej thiab thaj chaw tshwj xeeb ntawm cov khoom siv.

Qhov loj ntawm qhov ceev ntawm lub kais yuav cuam tshuam ncaj qha rau qhov ntim zog ntawm cov khoom siv, thiab tsuas yog qhov faib tawm qhov loj me ntawm cov khoom siv kom raug thiaj li ua tau qhov ua tau zoo tshaj plaws ntawm cov khoom siv.

03 Qhov Ceev ntawm Qhov Coj

Qhov ceev ntawm lub kais dej yog qhov hnyav ib chav ntim ntsuas los ntawm kev co uas ua rau cov hmoov zoo li nyob rau hauv daim ntawv ntim nruj heev. Nws yog ib qho cim qhia tseem ceeb los ntsuas cov khoom siv nquag. Qhov ntim ntawm lub roj teeb lithium-ion yog txwv. Yog tias qhov ceev ntawm lub kais dej siab, cov khoom siv nquag ib chav ntim muaj qhov hnyav loj, thiab lub peev xwm ntim siab.

04 Kev Sib Nqus Sib Nqus

Qhov ceev ntawm kev sib zog yog feem ntau rau daim ncej, uas yog hais txog qhov ceev tom qab dov tom qab cov khoom siv electrode tsis zoo thiab cov ntawv khi tau ua rau hauv daim ncej, qhov ceev ntawm kev sib zog = qhov ceev ntawm thaj chaw / (qhov tuab ntawm daim ncej tom qab dov rho tawm qhov tuab ntawm cov ntawv ci tooj liab).

Qhov ntom ntom ntawm daim ntawv muaj feem cuam tshuam nrog lub peev xwm tshwj xeeb ntawm daim ntawv, kev ua haujlwm zoo, kev tiv thaiv sab hauv thiab kev ua haujlwm ntawm lub roj teeb.

Cov yam cuam tshuam rau qhov ceev ntawm kev sib zog: qhov loj me ntawm cov khoom me me, kev faib tawm thiab morphology txhua yam muaj qhov cuam tshuam.

05 Qhov Ceev Tseeb

Qhov hnyav ntawm cov khoom khov kho ib chav ntim ntawm cov khoom siv hauv qhov xwm txheej ntom ntom (tsis suav nrog cov khoob sab hauv).

Vim tias qhov ceev tiag tiag yog ntsuas hauv lub xeev compacted, nws yuav siab dua qhov ceev tapped. Feem ntau, qhov ceev tiag tiag > qhov ceev compacted > qhov ceev tapped.

06 Lub peev xwm tshwj xeeb thawj zaug thiab kev tso tawm

Cov khoom siv graphite anode muaj peev xwm tsis rov qab tau hauv lub voj voog them-tso tawm thawj zaug. Thaum lub sijhawm them thawj zaug ntawm lub roj teeb lithium-ion, qhov chaw ntawm cov khoom siv anode raug sib xyaw nrog lithium ions thiab cov tshuaj yaj hauv electrolyte raug sib xyaw, thiab qhov chaw ntawm cov khoom siv anode decomposes los ua SEI. Zaj duab xis passivation. Tsuas yog tom qab qhov chaw electrode tsis zoo tau npog tag nrho los ntawm zaj duab xis SEI, cov tshuaj yaj tsis tuaj yeem sib xyaw, thiab qhov kev tawm tsam tau nres. Lub cim ntawm zaj duab xis SEI siv ib feem ntawm lithium ions, thiab qhov no ntawm lithium ions tsis tuaj yeem rho tawm ntawm qhov chaw ntawm lub electrode tsis zoo thaum lub sijhawm tso tawm, yog li ua rau muaj peev xwm poob tsis rov qab tau, yog li txo qhov peev xwm tshwj xeeb ntawm thawj qhov tso tawm.

07 Thawj Coulomb Kev Ua Haujlwm Zoo

Ib qho cim qhia tseem ceeb rau kev ntsuam xyuas kev ua tau zoo ntawm cov khoom siv anode yog nws thawj qhov kev them-tso tawm efficiency, tseem hu ua thawj Coulomb efficiency. Rau thawj zaug, Coulombic efficiency ncaj qha txiav txim siab qhov ua tau zoo ntawm cov khoom siv electrode.

Vim tias zaj duab xis SEI feem ntau yog tsim rau ntawm qhov chaw ntawm cov khoom siv electrode, thaj chaw tshwj xeeb ntawm cov khoom siv electrode cuam tshuam ncaj qha rau thaj chaw tsim ntawm zaj duab xis SEI. Qhov loj dua thaj chaw tshwj xeeb, qhov loj dua thaj chaw sib cuag nrog electrolyte thiab thaj chaw loj dua rau kev tsim zaj duab xis SEI.

Feem ntau ntseeg tias kev tsim cov zaj duab xis SEI ruaj khov yog qhov zoo rau kev them thiab tso tawm ntawm lub roj teeb, thiab cov zaj duab xis SEI tsis ruaj khov tsis zoo rau qhov tshuaj tiv thaiv, uas yuav siv cov electrolyte tas li, ua rau cov zaj duab xis SEI tuab dua, thiab ua rau sab hauv tsis kam.

08 Kev ua tau zoo ntawm lub voj voog

Lub voj voog ua haujlwm ntawm lub roj teeb yog hais txog tus naj npawb ntawm cov nqi them thiab tso tawm uas lub roj teeb ntsib nyob rau hauv qee qhov kev them thiab tso tawm thaum lub peev xwm ntawm lub roj teeb poob qis mus rau tus nqi teev tseg. Hais txog kev ua haujlwm ntawm lub voj voog, zaj duab xis SEI yuav cuam tshuam kev sib kis ntawm cov lithium ions rau qee qhov. Thaum tus naj npawb ntawm lub voj voog nce ntxiv, zaj duab xis SEI yuav txuas ntxiv poob, tev tawm, thiab tso rau ntawm qhov chaw ntawm lub electrode tsis zoo, ua rau maj mam nce ntxiv hauv qhov tsis kam sab hauv ntawm lub electrode tsis zoo, uas ua rau muaj cua sov thiab poob peev xwm.

09 Kev nthuav dav

Muaj kev sib raug zoo ntawm kev nthuav dav thiab lub neej voj voog. Tom qab lub electrode tsis zoo nthuav dav, ua ntej, lub plawv winding yuav raug deformed, cov khoom electrode tsis zoo yuav tsim cov kab nrib pleb me me, zaj duab xis SEI yuav raug tawg thiab rov tsim dua, cov electrolyte yuav raug noj, thiab kev ua haujlwm voj voog yuav raug puas tsuaj; qhov thib ob, lub diaphragm yuav raug nias. Kev nyem, tshwj xeeb tshaj yog qhov extrusion ntawm lub diaphragm ntawm ntug sab xis ntawm lub pob ntseg ncej, yog qhov hnyav heev, thiab nws yooj yim ua rau micro-luv circuit lossis micro-hlau lithium nag lossis daus nrog kev nce qib ntawm lub voj voog them-tawm.

Raws li qhov kev nthuav dav nws tus kheej, lithium ions yuav raug muab tso rau hauv qhov sib nrug ntawm graphite thaum lub sijhawm graphite intercalation, ua rau muaj kev nthuav dav ntawm qhov sib nrug ntawm interlayer thiab nce ntxiv. Qhov kev nthuav dav no tsis tuaj yeem rov qab tau. Qhov ntau ntawm kev nthuav dav yog cuam tshuam nrog qib ntawm kev taw qhia ntawm cov electrode tsis zoo, qib ntawm kev taw qhia = I004 / I110, uas tuaj yeem suav los ntawm cov ntaub ntawv XRD. Cov khoom siv graphite anisotropic feem ntau dhau los ntawm kev nthuav dav lattice hauv tib qho kev taw qhia (C-axis kev taw qhia ntawm graphite siv lead ua) thaum lub sijhawm lithium intercalation, uas yuav ua rau muaj kev nthuav dav ntawm lub roj teeb ntau dua.

10Ntsuas kev ua tau zoo

Qhov kev sib kis ntawm lithium ions hauv cov khoom siv graphite anode muaj qhov kev taw qhia zoo, uas yog, nws tsuas yog tuaj yeem ntxig rau perpendicular rau lub ntsej muag kawg ntawm C-axis ntawm graphite siv lead ua. Cov khoom siv anode nrog cov khoom me me thiab thaj chaw tshwj xeeb siab muaj kev ua tau zoo dua. Tsis tas li ntawd, qhov tsis kam ntawm electrode nto (vim yog SEI zaj duab xis) thiab qhov hluav taws xob conductivity kuj cuam tshuam rau kev ua tau zoo ntawm tus nqi.

Ib yam li lub neej voj voog thiab kev nthuav dav, lub isotropic negative electrode muaj ntau lub lithium ion transport channels, uas daws cov teeb meem ntawm qhov nkag tsawg dua thiab cov nqi diffusion qis hauv cov qauv anisotropic. Feem ntau ntawm cov ntaub ntawv siv cov thev naus laus zis xws li granulation thiab txheej los txhim kho lawv cov kev ua tau zoo.

HCMilling (Guilin Hongcheng) yog lub chaw tsim khoom ntawm cov khoom siv anode sib tsoo zeb.HLMX seriescov ntaub ntawv anode zoo kawg li-zoo zeb ntsug, HCHcov ntaub ntawv anode zeb ultrafinethiab lwm yam graphite sib tsoo zeb uas peb tsim tau siv dav hauv kev tsim cov khoom siv graphite anode. Yog tias koj muaj cov kev xav tau cuam tshuam, thov hu rau peb kom paub meej ntxiv txog cov khoom siv thiab muab cov ntaub ntawv hauv qab no rau peb:

Lub npe ntawm cov khoom siv raw

Khoom zoo (mesh / μm)

muaj peev xwm (t/h)