1. Omusingi gw’ebintu
High-Carbon Flake Graphite ye graphite eya waggulu-end ekoleddwa okuva mu natural flake graphite nga ekintu ekisookerwako ekisookerwako, ekolebwa okuyita mu kulongoosa mu mubiri (nga flotation, acid okunaaba) oba enkola z’okulongoosa mu kemiko.Ekifaananyi kyayo ekikulu ye kaboni etali ya kukyukakyuka eya>=94% n’okukuuma mu bujjuvu ensengekera ya layered flake ya natural graphite. Omugaso gwayo omukulu guli mu kugatta obulongoofu obw’amaanyi n’eby’obutonde n’eddagala ebirungi ennyo. Ye kintu ekikulu eky’omusingi ekiyunga eby’obugagga eby’obutonde ebya graphite n’ennimiro ez’enkomerero eza waggulu-nga bbaatule za lithium, obutambuzi obw’enkomerero-enkomerero, n’okuziyiza omuliro, nga kiwa obuwagizi obw’omusingi okulongoosa omutindo gw’ebintu wansi.
2.Ebipimo by’eby’ekikugu
|
Ebiraga eby’ekikugu |
Omunwe |
Obunene obwa bulijjo |
Ebiragiro |
|
Ebirimu kaboni ebinywevu |
% |
94.0-99.95 |
Ebiraga ebipimo ebikulu, 94% -96% ku kaboni omungi owa bulijjo, 97% -99% ku bulongoofu obw’amaanyi, n’okusukka 99.9% ku bulongoofu obw’amaanyi ennyo; Ultra high purity esinga kukozesebwa mu bintu bya bbaatule za lithium ne graphene |
|
Sayizi ya minzaani |
mm |
0.1-1.5 |
Okuwagira okulongoosa, ebiragiro ebya bulijjo: 0.1-0.3mm (ku bbaatule za lithium), 0.3-0.8mm (ku bintu ebitambuza), 0.8-1.5mm (ku bintu ebiziyiza) |
|
Ebirimu evvu |
% |
Entono oba yenkana 0.1-6.0 |
Enkolagana embi n’obungi bwa kaboni obutakyukakyuka, evvu eriri wansi oba yenkana 0.1% nga kaboni atakyukakyuka ali 99.9%, n’evvu eri wansi oba yenkana 6.0% nga kaboni atakyukakyuka ali 94% |
|
Ebirimu obunnyogovu |
% |
Ekitono oba ekyenkana 0.5 |
Fuga okutereka n’okukola okutebenkera okwewala okukuŋŋaanyizibwa oba okukosa enkola z’okukola wansi |
|
Ebirimu ebikyukakyuka |
% |
Ekitono oba ekyenkana 1.0 |
Kitegeeza ebirungo ebiwunya ebirimu ku diguli 200 , ekiyinza okuleeta ebiwujjo mu kiseera ky’okulongoosa n’okukosa omutindo gw’ebintu singa kiba waggulu nnyo |
|
Ebirimu ekyuma |
% |
Ekitono oba ekyenkana 0.02-0.5 |
Obucaafu obukulu obw’obulabe bwetaagibwa okuba Obutono oba obwenkana 0.02% mu kifo kya bbaatule ya lithium ate Obutono oba obwenkana 0.5% mu kifo ky’amakolero aga bulijjo |
|
Ebirimu ekibiriiti |
% |
Ekitono oba ekyenkana 0.03-0.1 |
Ekosa omulimu gw’ebbugumu erya waggulu, nga kyetaagisa Ekitono oba ekyenkana 0.03% mu bitundu by’okuziyiza omuliro ne bbaatule za lithium okwewala okukola ggaasi ez’obulabe ku bbugumu erya waggulu |
|
Obuziyiza bw’eddoboozi |
μΩ·m |
Entono oba yenkana 10 |
Okupima obutambuzi, omuwendo gye gukoma okuba wansi, gye gukoma okusaanira ennimiro y’ebintu ebitambuza ne bbaatule za lithium. Ebikwata ku bulongoofu obw’amaanyi ennyo bitera okuba Ntono oba okwenkana 5μΩ·m |
|
Obungi bw’ebintu ebingi |
g/cm3 |
1.0-1.6 |
Ebikwatagana n’obunene bw’ekipimo, minzaani ennungi zirina density y’okupakinga eya wansi (1.0-1.2g/cm3) ate minzaani enzirugavu zirina density esingako (1.4-1.6g/cm3) . |
|
Omuwendo gwa pH |
- |
6.0-8.0 |
Neutral oba weakly alkaline, okwewala okukulukuta kw’ebyuma ebirongoosa wansi, ebikwatagana n’ebisinga obungi electrolytes n’ebintu ebikozesebwa wansi |
3.Ebifaananyi by'ebintu
Obulongoofu bwa waggulu ate obucaafu obutono: Ebirungo bya kaboni ebitali bikyukakyuka okutwalira awamu biba wakati wa 94% ne 99.9%, era ebimu ku bikwata ku nkomerero-eby’enkomerero bisobola okutuuka ku bitundu ebisukka mu 99.95%; Evvu liri mutono (ebiseera ebisinga Kitono oba kyenkana 0.1% -6%, nga kitereezeddwa mu ngeri ey’emabega nga kirimu kaboni atakyukakyuka), era obucaafu obw’obulabe nga silikoni, aluminiyamu, ekyuma, ne salufa bufugibwa nnyo ku mitendera egya wansi ennyo (nga ekyuma Ekitono oba ekyenkana 0.02%, ekibiriiti kitono oba kyenkana 0.05%), ekiyinza okwewala okutaataaganyizibwa mu nkola y’ebintu wansi.
Ensengeka ya minzaani enzijuvu: Enkula y’ekipimo ya bulijjo, nga obuwanvu bwayo butera okuva ku mm 0.1-1.5 ate obuwanvu bwa mm 2-10μm. Ensengekera ya kirisitaalo eriko layeri tekyuse; Endabika yaayo ya silver grey metallic luster, nga bulk density yaayo ya 1.0-1.6g/cm3. Ensengeka yaayo ey’enjawulo eya minzaani egiwa okusereba okulungi ennyo wakati mu layeri n’okukola.
Ebintu ebirungi ennyo eby’omubiri n’eby’eddagala: Olw’obutafaanagana bwa kirisitaalo n’obulongoofu obw’amaanyi, erina obutambuzi obulungi ennyo (obuziyiza obunene obutono oba obwenkana 10μΩ·m) n’obutambuzi bw’ebbugumu (obutambuzi bw’ebbugumu Obusinga oba obwenkana 150W/(m·K)); Okugumira ebbugumu ery’amaanyi erya waggulu, okusobola okugumira ebbugumu erisukka diguli 3000 mu mbeera etali ya maanyi, n’okutebenkera kw’eddagala okulungi ennyo mu mbeera za asidi ne alkaline (okuggyako asidi ez’amaanyi ezikola oxidizing), ekigifuula etali ya kukulukuta nnyo.
Okusobola okukyusakyusa mu nkola ennungi: Ensengekera ya minzaani nnyangu okumenya naye si kyangu kumenya mu butto mulungi, ekigifuula ennyangu okulongoosa oluvannyuma nga spheroidization, okubumba, okusiiga, n’ebirala; Tusobola okulongoosa obunene bwa minzaani n’omutindo gw’obulongoofu okusinziira ku byetaago byaffe, n’okukwatagana n’enkola ez’enjawulo eziri wansi. Okugeza, obusannyalazo bwa lithium negative bwetaaga minzaani ennungi (0.1-0.5mm), ate ebintu ebiziyiza omuliro byetaaga minzaani enzirugavu (0.8-1.5mm).
4. Enkozesa y’Ebintu
Ebintu ebisookerwako ebisookerwako eby’ebintu ebiyitibwa lithium-ion negative electrode materials: Nga ekintu ekikulu ekisookerwako eky’obusannyalazo bwa lithium-ion negative electrodes obw’obusobozi obw’amaanyi, spherical graphite ekolebwa okuyita mu nkola nga okumenya, okufuula spheroidization, n’okusiiga, era ekozesebwa mu bbaatule z’amaanyi (emmotoka empya ez’amaanyi), bbaatule ezitereka amaanyi (ebifo eby’amasannyalaze ebitereka amaanyi), ne bbaatule ezikozesa enkomerero-(laptops, drones); Obulongoofu obw’amaanyi busobola okutumbula obusobozi bwa bbaatule obw’enjawulo ( Obunene oba obwenkana 360mAh/g) n’obulamu bw’enzirukanya ( Obunene oba obwenkana enzirukanya 2000).
High-end conductive ebintu ebijjuza: Eyongerwa ku buveera, kapiira, n’ebizigo okukola ebintu ebikwatagana ebitambuza, ebikozesebwa mu bisenge by’ebyuma eby’amasannyalaze (anti-static), okusiba amatu ga bbaatule ya lithium (okusiba okutambuza), n’ebisiiga ebitambuza modulo y’ekitangaala; Obutambuzi obw’amaanyi busobola okukendeeza ku buziyiza bw’ebintu, okulongoosa obumu bw’obutambuzi, n’okutuukiriza ebyetaago by’obuuma obutuufu obw’amaanyi-.
Ebitundu by’ebintu eby’enjawulo ebiziyiza omuliro: High-Carbon Flake Graphite ekozesebwa okukola amatoffaali agaziyiza omuliro aga waggulu-(steel blast furnace lining), ebizigo ebiziyiza omuliro (okukuuma ebitundu by’ebyuma eby’omu bwengula eby’ebbugumu eringi-), n’ebiwujjo ebikuuma okusobola okusuula obutasalako; Obulongoofu obw’amaanyi n’okugumira ebbugumu eringi bisobola okutumbula okuziyiza okukulugguka kw’ebisasiro (slag erosion resistance) kw’ebintu ebiziyiza omuliro n’okwongera ku bulamu bwabyo obw’okuweereza (30% -50% waggulu okusinga ebintu ebya bulijjo ebiziyiza graphite).
Ebizigo ebituufu n’ebintu ebisiba: Ekoleddwa mu bizigo bya graphite (ebikozesebwa okusiiga yingini z’ennyonyi n’ebitundu by’ebyuma ebikozesebwa mu byuma ebituufu), nga ekozesa okusereba wakati wa layeri okukendeeza ku mugerageranyo gw’okusikagana (<=0.15); Oba erongooseddwa mu bizibiti bya graphite ebigonvu (ku bizibiti bya payipu ne vvaalu), nga byombi bigumira ebbugumu erya waggulu n’erya wansi (-200℃~600℃) n’obuziyiza bwa puleesa eya waggulu (<=30MPa) characteristics.
Ennimiro endala eza waggulu-enkomerero: Ekozesebwa mu makolero ga nukiriya ebitundu bya graphite (obucaafu obutono busobola okukendeeza ku kunyiga emisinde), ebisookerwako okuteekateeka graphene (obulongoofu obw’amaanyi bukendeeza ku buzibu bw’okulongoosa graphene), high-end pencil leads (high gloss and writing fluency) n’ennimiro endala, nga zeesigamye ku bulongoofu n’ebirungi by’enzimba okugaziya ensalo z’okukozesa.
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