Battery coating adhesion a ɛma ɛyɛ kɛse a ɛne nea ɛkorɔn-power corona ayaresa .
Nhyɛnmu
Ahoɔden a ɛkɔ soro a wɔhwehwɛ, kyinhyia a ɛware, ne ahobammɔ a ɛkɔ soro wɔ lithium-ion batere mu a wonnyae no de ahwehwɛde ahorow a ebi mmae da ahyɛ sɛnea wɔyɛ no pɛpɛɛpɛ no so. Anamɔn a ɛho hia, nanso wɔtaa bu ani gu so wɔ electrode a wɔyɛ mu ne ade a wɔde kata ade a ɛyɛ adwuma no so ne mprempren nneɛma a wɔboaboa ano no ntam a ɛbata ho. Adhesion a enye no ma delamination, emu sɔre tia, ne huammɔdi a ɛyɛ hu. Saa asɛm yi hwehwɛ sɛnea wɔde-power corona ayaresa a ɛkorɔn no di dwuma sɛ ɔkwan a etu mpɔn kɛse, ɛyɛ kusuu, na ɛnyɛ nea atwa yɛn ho ahyia a ɛbɛma dade a wɔde ayɛ nneɛma no ani ayɛ kɛse kɛse, na ɛnam so ahwɛ ahu sɛ ade a wɔde kata ade so a ɛkorɔn a wɔde bɛkata so ama nea edi hɔ-awosu mu batere adwumayɛ.
1. Nnianim Asɛm: Abatade a Ɛbata Battery a Wɔyɛ Ho Asɛnnennen .
Standard lithium-ion battery electrode yɛ composite structure a slurry a ɛyɛ active materials a ɛyɛ slurry (sɛ nhwɛso no, lithium cobalt oxide a wɔde yɛ cathodes, graphite ma anode), conductive additives, ne binders a wɔde kata so wɔ dade a ɛyɛ tratraa so a wɔde dade ayɛ{3}}a ɛtaa yɛ aluminium ma ɔkraman ne kɔbere a wɔde ma no. Saa ade a wɔde akata so yi mudi mu kura yɛ ade titiriw.
adhesion a ɛnnɔɔso wɔ foil no so no foil-coating interface no betumi ama:
Delamination: .Nkataso no tetew ne ho fi foil no ho bere a wɔreyɛ calendering, slitting, anaasɛ nkwammoaa no.
Ɔsɔretia a ɛkɔ soro:Nkitahodi a enye ma anyinam ahoɔden a ɛwɔ ntam no kɔ soro, na ɛtew ahoɔden a efi mu ba no so na ɛyɛ adwuma yiye.
Tumi no fade & cycle asetra so tew:Nneɛma a ɛyɛ adwuma a ɛyɛ adwuma a wɔatew ho no bɛyɛ nea ɛnyɛ adwuma wɔ electrochemical mu, na ɛma wotumi yera ntɛmntɛm.
Ahobammɔ hazsafety asiane ahorow:Delamination betumi ama hotspots ne emu short circuits, a ɛkanyan thermal runaway.
Atetesɛm akwan a wɔfa so ma adhesion tu mpɔn no gyina binder chemistry ne calendering pressure so kɛse. Nanso, saa akwan yi wɔ anohyeto ahorow na enni asɛm titiriw no ho dwuma: dade a ɛho ntew a ɛwɔ soro no ahoɔden a ɛba fam, a mpɛn pii no ngo ne oxide a ɛrehuruhuruw no ho agu fĩ, na ɛma ɛyɛ nea efi awosu mu yɛ nea nsu ntumi nkɔ mu na ɛyɛ den ma nsu anaa aduru a wɔde yɛ nsu-gyina nsu a ɛyɛ nwini so ma ɛyɛ nsu a ɛyɛ nwini.
2. Nyansahu a ɛfa High-Power Corona ayaresa ho .
Corona ayaresa yɛ wim plasma mfiridwuma a ɛde-voltage electrical discharge di dwuma de ionize mframa a atwa ade a wɔayɛ no aduru ho ahyia. Wɔ-power corona treater nhyehyɛe a wɔayɛ ama batere a wɔyɛ mu:
Adeyɛ no:Metal foil web no twam wɔ rola a ɛwɔ fam so. Wɔ n’atifi no, electrode a ɛka ho a ɛne-frequency, a ɛkorɔn-voltage tumi generator no yɛ electrostatic field a ahoɔden wom. Saa field yi yɛ ionize mframa a atwa yɛn ho ahyia (O2, N2, H2o), a ɛyɛ mununkum a ɛyɛ den a ɛwɔ plasma a ions, electron, free radicals, ne molecule ahorow a ɛyɛ anigye wom (te sɛ ozone te sɛ ozone O2).
Nneɛma a ɛwɔ soro a ɛsakra: .Sɛ saa plasma yi kɔ foil no ani a, nneɛma atitiriw abien ba:
1. AniNneɛma a ɛwɔ soro a ɛho tew:Plasma ahorow a ɛma ahoɔden no ma efĩ nketenkete te sɛ ngo a ɛwɔ nipadua no mu ne mfutuma fi mu ma ɛyɛ hyew na woyi fi hɔ yiye.
2. Ɔfasuo so dwumadie: .Nea ɛho hia kɛse no, plasma no de polar functional akuw (a ne titiriw hydroxyl -OH, carbonyl C=O, ne carboxyl -COOH) ba foil no ani so denam oxidation reactions so. Saa adeyɛ yi a wonim no sɛ functionalization no sesa chemistry a ɛwɔ soro no koraa.
3. Mfaso titiriw a ɛwɔ so ma batere no mu anyinam ahoɔden .
Corona treater a ɛkorɔn-power a wɔde ka ho tẽẽ wɔ coating line no mu no de mfaso kɛse ba:
Nkɔanim a emu yɛ den a ɛba wɔ asase ani ahoɔden so:Polar akuo a wɔde aba no dannan foil no firi-ahoɔden, non{1}}aduru soro kɔ soro-ahoɔden, nsuo a ɛyɛ nsuo. Eyi ma electrode slurry no wettability ne ne trɛw tu mpɔn kɛse, na ɛma wotumi de coating a ɛyɛ pɛ, pinhole-akata so.
Ahoɔden a ɛkorɔn a wɔde bata ho:Ɛnam sɛ ɛyɛ nsuo a ɛyɛ papa na ɛyɛ tẽẽ a nnuru no de bɔ mu denam dwumadie akuo foforɔ no so nti, mfiri a ɛka bom ne van der Waals tumi a ɛwɔ ntam no yɛ den kɛseɛ. Eyi de abusuabɔ a emu yɛ den a ɛtra hɔ ma nhyɛso a ɛwɔ drying, calendering, ne long-bere mu electrochemical cycling ba.
Nneɛma a ɛkɔ so pɛpɛɛpɛ a ɛkɔ so wɔ ɔkwan a wɔfa so yɛ adwuma no so & aba:Ɛdenam ɔfasu a ɛho tew na ɛyɛ adwuma bere nyinaa a wɔde ma so no, corona ayaresa yi batch-to{1}}batch nsakrae a efi foil su a ɛsakrasakra mu ba no fi hɔ. Eyi ma nneɛma a wɔsɛe no so tew na ɛma nneɛma a wɔyɛ no nyinaa tu mpɔn.
Dry, solvent-a ɛwɔ mu, na ɛyɛ ntɛm ara:Nea ɛnte sɛ nnuru a wɔde di dwuma wɔ nnuru a wɔde di dwuma anaa ogya a wɔde yɛ aduru no mu no, corona ayaresa yɛ adeyɛ a ɛho tew. Ɛnhia nnuru biara a wɔde siw ano, ɛmma nsu a ɛyɛ fĩ biara mma, na ne nkɛntɛnso no yɛ ntɛm ara, na ɛma ɛyɛ nea eye ma-ntɛmntɛm a ɛkɔ so yɛ nneɛma a ɛkɔ so no.
Nneɛma a ɛkɔ akyiri a ɛne no hyia:Bere a nnwuma no rekɔ electrode ahorow a ɛyɛ den, silicon-anodes, ne solid-tebea batere so no, ahwehwɛde a ɛfa ntam a ɛyɛ pɛ a ɛbata ho no bɛyɛ nea ɛho hia kɛse mpo. High-power corona treatment yɛ adwinnade a ɛyɛ adwuma pii a ɛtumi sesa ma saa nneɛma foforɔ yi.
4. Nneɛma a wɔde di dwuma ho nsusuwii .
Sɛnea ɛbɛyɛ a mfaso a ɛwɔ-power corona treater so no bɛyɛ kɛse no, ɛsɛ sɛ nneɛma pii yɛ nea eye sen biara:
Tumi a ɛwɔ mu: .Tumi a ɛkorɔn (a wɔasusuw wɔ W/min/m2 mu) ma plasma a ɛyɛ den ba, na ɛde ɔfasu no ani a ɛyɛ adwuma kɛse ba. Ɛsɛ sɛ wɔkyerɛ dodow a eye sen biara no na wɔakwati ayaresa a ɛboro so a ebetumi ama wɔanya ayaresa a ɛwɔ akyi anaasɛ wɔayɛ no ketewaa bi.
Electrode Nsusuwii:Wobetumi de standard anaa segmented electrodes adi dwuma a egyina wɛb no tɛtrɛtɛ ne hia a ɛhia sɛ wɔde zonal control di dwuma.
Wɛb ahoɔhare & nkabom:Ɛsɛ sɛ wɔde nhyehyɛe no ka coater a ɛwɔ hɔ dedaw no ho a biribiara nhaw no, na ɛne wɛb ahoɔhare no hyia na ama wɔayɛ ayaresa a ɛkɔ so daa a ɛrensɛe line nhyɛso.
Ozone sohwɛ:Wɔde Ozone Destruction Units (ODUS) a wɔaka abom ahyɛ nnɛyi aduru a wɔde yɛ aduru no mu ma atumi asɛe ozone a wɔayɛ no dwoodwoo, na ama wɔanya adwumayɛbea a ahobammɔ wom.
5. Awiei .
Wɔ akansi kɛse a ɛfa batere a wɔyɛ ho no, mfaso kakraa bi a wobenya wɔ adwumayɛ ne ahotoso mu no ho hia kɛse. High-power corona treatment di fapem a ɛyɛ manufacturing bottleneck denam engineering surface properties of current collector foils at a molecule level. Ɛdenam hwɛ a wɔbɛhwɛ ma abata ade a wɔde kata so ne nea wɔde ahyɛ mu no abata ho a mfomso biara nni ho so no, ɛboa tẽẽ ma wɔyɛ batere ahorow a ɛwɔ tumi kɛse, ɛma obi tumi tra hɔ kyɛ, na ɛma ahobammɔ ho kwan a ɛkɔ anim. Sɛnea ɛte no, ɛnyɛ anammɔn a wɔde di dwuma ara kwa na mmom ɛyɛ mfiridwuma a ɛho hia a ɛma ahoɔden a wɔde sie a ɛkɔ anim daakye.