Ziziphi iinguqu kunye nokulungiswa ekufuneka zenziwe ekusebenzeni kwe-graphitized petroleum coke?

Ukuze kuhlangatyezwane neemfuno zeebhetri ze-lithium-ion zesizukulwana esilandelayo ezisebenza kakuhle, i-graphitized petroleum coke ifuna ukuphuculwa kokusebenza kwesantya, uzinzo lomjikelo, ukusebenza kobushushu obuphantsi, amandla olwakhiwo, ukusebenza kakuhle kokuqala, kunye nokusebenza kakuhle kweendleko ngokweenkqubo zemveliso. Uhlalutyo oluthile lulandelayo:

I. Ukuphucula Ukusebenza Kwezinga kunye Nozinzo Lwemijikelo

Ingxaki: Ngexesha leenkqubo zokutshaja nokukhupha, ukufakwa nokukhutshwa kwee-ion ze-lithium kwi-graphitized petroleum coke kunokubangela ukwanda kunye nokucutheka kwee-graphite layers. Ngexesha elide, oku kunokukhokelela kumonakalo wesakhiwo, okuchaphazela ukuzinza komjikelo. Imiyalelo yoPhuculo:

• Uhlengahlengiso lweSakhiwo seeNgcambu: Khetha ii-precursors ze-needle coke ezifanelekileyo kwaye usebenzise izinto ezikwaziyo ukuzoba njenge-pitch njengemithombo yekhabhoni kwii-binders. Ngokulungisa ezi zinto kwi-rotary oven, ii-particles ezininzi ze-needle coke zinokudityaniswa ukuze zenze ii-particles zesibini ezinobukhulu obufanelekileyo bee-particle, kulandele i-graphitization. Le ndlela inciphisa ngempumelelo i-crystallite orientation index yezinto (ixabiso le-OI) kwaye iphucula indlela yokusasazwa kwee-ion ze-lithium, ngaloo ndlela iphucula ukusebenza kwesantya.
• Ukuguqulwa kweCoating Surface: Coating petroleum coke eyenziwe ngegrafiti enezinto ezifana ne-amorphous carbon, i-metal oxides, okanye iipolymers ukwakha amasuntswana akhiwe “nge-core-shell”. Umaleko wecoating unokwahlula unxibelelwano oluthe ngqo ne-electrolyte, unciphise iindawo ezisebenzayo kumphezulu, unciphise indawo ethile yomphezulu, kwaye ngaxeshanye uphucule amandla okufakwa kunye nokusasazwa kwee-ion ze-lithium, ngaloo ndlela uphucula uzinzo lomjikelo.

II. Ukuphucula Ukusebenza kobushushu obuphantsi

Ingxaki: Kwiindawo ezinobushushu obuphantsi, izinga lokusasazeka kwee-ion ze-lithium kwi-graphitized petroleum coke liyancipha, nto leyo ekhokelela ekwehleni kokusebenza kwebhetri. Imiyalelo yoPhuculo:

• Ukufunxa ngeSoft Carbon: Ukufaka inxenye ethile yecarbon ethambileyo kwi-anode yegraphite kunokuphucula ukusebenza kwebhetri kokutshaja kubushushu obuphantsi. Isoft carbon inesakhiwo esingaguqukiyo esinesithuba esikhulu phakathi kweeleya kunye nokuhambelana okuhle ne-electrolyte, nto leyo ekhokelela ekusebenzeni kakuhle kubushushu obuphantsi. Nangona kunjalo, umlinganiselo wokufunxa kufuneka ulawulwe ngononophelo ukuze ulinganise ukusebenza kobushushu obuphantsi kunye nobomi bomjikelo.
• Ukuphucula ukwenziwa kwe-Electrolyte: Ukuphucula ukwenziwa kwe-electrolyte ngokongeza izongezo ezintsha okanye ukutshintsha ukwakheka kwe-solvent ukuze kuncitshiswe i-viscosity ye-electrolyte kumaqondo obushushu aphantsi kwaye kuphuculwe izinga lokusasazwa kwee-ion ze-lithium.

III. Ukuphucula Amandla kunye nozinzo lweSakhiwo

Ingxaki: Izixhobo zekhabhoni ezinegrafiti ephezulu, nangona zinamandla aphezulu kunye namaqonga okukhupha itshaja azinzileyo, zinokubonisa ukusebenza kakubi komjikelo kunye nokusebenza kobushushu obuphantsi. Imiyalelo yoPhuculo:

• Ukulawula iGraphitization Degree: Ngexesha lenkqubo yegraphitization, inqanaba legraphitization kufuneka lilawulwe ukuze kugcinwe ezinye izakhiwo ezingafaniyo phakathi kwee-microcrystals, ngaloo ndlela kugcinwe inqanaba elithile lamandla esakhiwo.
• Ukwazisa iiNanostructures: Ngokwakha ii-nanostructures okanye izakhiwo ezinemingxuma, inani leendlela zokufaka kunye nezokukhupha ii-ion ze-lithium linokwandiswa, nto leyo ephucula uzinzo lwesakhiwo sezinto.

IV. Ukuphucula ukusebenza kakuhle kokuqala kunye nokunciphisa iindleko

Ingxaki: Njengesixhobo se-anode, i-graphitized petroleum coke inokubonisa ukusebenza okuphantsi kokuqala kunye neendleko eziphezulu zemveliso. Imiyalelo yoPhuculo:

• Unyango lwe-Oxidation Surface: Nyanga i-petroleum coke ene-graphitized ngesisombululo se-oxidizing agent esinamandla ukuze u-oxidize kwaye udlulise amandla asebenzayo kumphezulu kwaye unciphise amaqela asebenzayo, ngaloo ndlela uphucula ukusebenza kakuhle kokuqala.
• Ukuphucula iinkqubo zemveliso: Ukuphucula iinkqubo zemveliso ezifana ne-calcination kunye ne-graphitization ukunciphisa iindleko zemveliso kunye nokuphucula ukusebenza kakuhle kwemveliso.