Kunezinkomba eziningi zobuchwepheshe zezinto zokwenziwa kwama-anode we-graphite, futhi kunzima ukubheka, ikakhulukazi kufaka phakathi indawo ethile engaphezulu, ukusatshalaliswa kosayizi wezinhlayiyana, ukuncipha kobukhulu, ukuqina kokukhipha, ukusebenza kahle kokuqala, ukusebenza kahle kokuqala, njll. Ngaphezu kwalokho, kukhona izinkomba ze-electrochemical ezinjengokusebenza komjikelezo, ukukala ukukala, ukuvuvukala, njalonjalo. Ngakho-ke, yiziphi izinkomba zokusebenza kwezinto zokwakha i-graphite anode? Okuqukethwe okulandelayo kwethulwa kuwe nge-HCMILLILING (Guilin Hongcheng), umenzi weIzinto ze-anode ukugaya umgodi.

01 indawo ethize engaphezulu

Kubhekiswa endaweni engaphezulu kwento ngayinye yeyunithi. Incane yizinhlayiyana, enkulu indawo ethize.

I-electrode engemihle enezinhlayiya ezincane kanye nendawo ephakeme ephezulu yendawo ineziteshi eziningi kanye nezindlela ezimfishane zokufuduka kwe-lithium ion, futhi ukusebenza kwesilinganiso kungcono. Kodwa-ke, ngenxa yendawo enkulu yokuxhumana ne-electrolyte, indawo yokwenza ifilimu ye-SEI nayo inkulu, futhi ukusebenza kahle kokuqala nakho kuzoba phansi. . Ngakolunye uhlangothi, izinhlayiya, zinenzuzo yobuningi obukhulu bokuhlangana.

Indawo ethile engaphezulu yendawo ye-anode ye-graphite ikulungile ngaphansi kwe-5m2 / g.

02 Ukusatshalaliswa kosayizi wezinhlayiyana

Ithonya losayizi wezinhlayiyana ze-graphite anode impahla ekusebenzeni kwayo kwe-electrochemical ukuthi usayizi wezinhlayiyana we-anode impahla uzothinta ngqo ubuningi bempompo yezinto ezibonakalayo kanye nendawo ethile yangaphandle yezinto ezibonakalayo.

Ubukhulu bokwehla kwethepha kuzothinta ngqo ngobuningi bevolumu ye-material, futhi kuphela ukusatshalaliswa okungusayizi kwezinhlayiyana okufanele kungandisa ukusebenza kwezinto.

03 Thepha Ubuningi

Ubuningi bempompi buyinqwaba yevolumu ngalinye elinganiselwa ngokudlidliza okwenza i-powder ivele ngendlela eqinile yokupakisha. Kuyinkomba ebalulekile ukukala impahla esebenzayo. Ivolumu yebhethri le-lithium-ion lilinganiselwe. Uma ubuningi bempompi buphezulu, impahla esebenzayo ngevolumu ngayinye yeyunithi inenqwaba enkulu, futhi umthamo wevolumu uphezulu.

04 Ukuhlangana Kwamandla

Ubuningi bokusebenzisana ikakhulukazi kwengxenye yePole, okubhekisele ekubunjweni ngemuva kokugoqa ngemuva kokufakwa kwe-electrode okusebenzayo kanye nesiqeshana se-pole / (ubukhulu besiqeshana sendawo ngemuva kokugoqa ama-a ubukhulu be-foil yethusi).

Ukuqina kokuhlangana kuhlobene kakhulu ne-Sheet Amandla athile, ukusebenza kahle, ukumelana kwangaphakathi nokusebenza komjikelezo webhethri.

Ukuthonya izici zobunzima bokusebenzisana: usayizi wezinhlayiyana, ukusatshalaliswa kanye ne-morphology konke kunomphumela.

05 Ubuningi Beqiniso

Isisindo sendaba eqinile ngeyunithi ngayinye yeyunithi yezinto ezihlanganayo ngokuphelele (ngaphandle kwe-voids yangaphakathi).

Njengoba ubukhulu beqiniso bukalwa ngesimo esihlanganisiwe, kuzoba ngaphezulu kobukhulu obuthathiwe. Ngokuvamile, ubuningi beqiniso> Ubuningi obuhlanganisiwe> Ubuningi obuthile.

06 Icala lokuqala futhi likhipha amandla athile

Izinto ze-anode ye-graphite zinamandla angaphenduki kumjikelezo wokuqala wokukhipha umshayeli. Ngesikhathi senqubo yokuqala yokushaja yebhethri le-lithium-ion, ingaphezulu lezinto ze-anode ziyenziwa ngama-lithium ion kanye nama-molecule we-solvent ku-electrolyte afakiwe, futhi ingaphezulu lezinto ezibonakalayo ze-anode zibola kakhulu ukwakha i-sei. Ifilimu yokudlula. Kungemva kokuba i-electrode engemihle imbozwe yifilimu ye-SEI ngokuphelele, ama-solecule e-solvent awakwazanga ukuhambisa, futhi ukusabela kwamiswa. Isizukulwane sefilimu ye-SEI sisebenzisa ingxenye ye-lithium ion, futhi le ngxenye yama-lithium ion ayinakukhishwa ebusweni be-electrode engemihle ngesikhathi senqubo yokuphuma, ngaleyo ndlela kudale amandla okukhishwa okuqala.

07 ukusebenza kwe-couloms yokuqala

Inkomba ebalulekile yokuhlola ukusebenza kwezinto ze-anode ukusetshenziswa kwayo kokuqala kokukhishwa, owaziwa nangokuthi i-coulom kahle yokuqala. Ngokokuqala ngqa, ukusebenza kahle kwe-coulombic kunquma ukusebenza kwe-electrode impahla.

Njengoba ifilimu ye-SEI yenziwa kakhulu ebusweni be-electrode material, indawo ethize ye-electrode impahla ithinta ngqo indawo yokwakheka kwefilimu ye-SEI. Indawo enkulu yendawo ethize, enkulu indawo yokuxhumana ne-electrolyte kanye nenkulu yendawo yokwakha ifilimu ye-SEI.

Ngokuvamile kuzwakala ukuthi ukwakheka kwefilimu elizinzile le-SEI kuyazuzisa ukushaja kanye nokukhishwa kwebhethri, futhi ifilimu elingaphephile le-SEI alilungile ngokusabela, okuzothuthukisa ngokuqhubekayo i-electrolyte, futhi khuphula ukumelana kwangaphakathi.

Ukusebenza komjikelezo we-08

Ukusebenza komjikelezo kwebhethri kubhekisele kwinani lamacala kanye nokukhishwa kwebhethri okuhlangenwe nakho okuhlangenwe nakho okuthile nokukhipha umbuso lapho kwehla ibhethri lapho kwehla ngenani elithile. Ngokuya ukusebenza komjikelezo, ifilimu ye-SE Iyovimba ukuguquguquka kwama-lithium ion ngezinga elithile. Njengoba inani lemijikelezo likhuphuka, ifilimu le-SE lizoqhubeka nokuwa, liphume, bese idiphozithi ebusweni be-electrode engemihle, okuholela ekunyuseleni kancane kancane kwe-electrode engemihle, okuletha ukuncipha kokushisa kanye nokulahleka kwamandla .

09 Ukunwetshwa

Kunokuhlangana okuhle phakathi kokunwetshwa nokuphila komjikelezo. Ngemuva kokuthi i-elektrodi engemihle yandisiwe, okokuqala, umnyombo ovunguzayo uzoba ngokonakaliswa, izinhlayiya ze-electrode ezingezinhle zizokwakha imifantu emincane, ifilimu le-SEI izophuka futhi isetshenziswe kabusha, ukusebenza ngomjikelezo kuzokwehla; futhi ukusebenza komjikelezo kuzokwehla; Okwesibili, i-diaphragm izoncipha. Ingcindezi, ikakhulukazi ukukhishwa kwedayaphragm ngakwesokunene se-pole endlebeni, kuyinto ebaluleke kakhulu, futhi kulula ukudala umjikelezo omncane we-lithium noma i-micro-metal ye-lithium ngenqubekela phambili yomjikelezo wokukhipha umjikelezo.

Ngokuqondene nokunwetshwa ngokwawo, ama-lithium ion azofakwa kwisikhala sokuhlasela kwe-graphite ngesikhathi senqubo yokuxhumana ye-graphite, okuholela ekunwetshisweni kwesikhala sokuhlasela kanye nokwanda kwevolumu. Le ngxenye yokunwebeka ayinakuphikwa. Inani lokunwetshwa lihlobene ne-degree yokuqagela i-electrode engemihle, izinga lokuqondisa = i-I004 / I110, elingabalwa kusuka kudatha ye-XD. Izinto ze-graphite ze-anisotropic zivame ukubhekana nokunwetshwa kwamathanga endaweni efanayo (ukuqondiswa kwe-c-axis yekriphu ye-graphium) ngesikhathi senqubo enkulu ye-lithium, ezoholela ekunwelisweni kwebhethri okukhulu kwebhethri.

10Ukusebenza kwesilinganiso

Ukuvikelwa kwama-lithium ions kwizinto ezibonakalayo ze-anode ye-graphite zinokuqondisa okuqinile, okungukuthi, kungafakwa kuphela nge-perpendicular kuze kube sekupheleni kobuso be-c-axis ye-c-axis ye-c-axis yekriphu ye-C-axis ye-C-axis ye-C-axis yekriphu ye-C-axis ye-C-axis yekriphu ye-C-axis ye-C-axis yekriphu ye-C-axis ye-c-axis yekriphu ye-C-axis ye-C-axis ye-CHSStal ye-Graphite. Izinto ze-anode ezinezinhlayiya ezincane kanye nendawo ephezulu yendawo ephezulu zinokusebenza okungcono kwesilinganiso. Ngaphezu kwalokho, ukumelana komhlaba we-electrode (ngenxa yefilimu ye-SEI) kanye nokuqhutshwa kwe-electrode kuthinta nokusebenza kwesilinganiso.

Ngokufanayo nempilo yomjikelezo kanye nokunwetshwa kwe-esotropic ne-electrode enama-lithium Ion Transport, exazulula izinkinga zokungena okuncane namanani aphansi we-anisotropic. Iningi lezinto zokwakha lisebenzisa ubuchwepheshe obunjengomgogodla kanye ne-coating ukuthuthukisa ukusebenza kwalo kwesilinganiso.

I-HCMILLILING (Guilin Hongcheng) ingumkhiqizi wezinto zokugaya ama-anode wokugaya umgodi.Uchungechunge lwe-HLMXIzinto ze-anode -khulu-Fine vertical Mill, HchIzinto ze-anode I-Ultra-Fine MillFuthi okunye ukugaya kokugaya okukhiqizwa yi-US kusetshenziswe kabanzi ekukhiqizweni kwezinto zokwakha i-graphite anode. Uma unezidingo ezihlobene, sicela uxhumane nathi ngemininingwane yemishini futhi unikeze ngolwazi olulandelayo kithi:

IGAMA LOKUFUNDA

Ubuchwepheshe Bomkhiqizo (Mesh / μm)

Amandla (T / H)