Vim li cas Carbon Electrodes Suit Photovoltaic Devices
Kev lag luam hnub ci txuas ntxiv txhim kho cov thev naus laus zis photovoltaic uas txhim kho kev ua tau zoo, ruaj khov thiab tsim kev lag luam. Graphite thiab carbon-raws li cov ntaub ntawv ua lub luag haujlwm loj hlob nyob rau tom ntej- tiam cell, tshwj xeeb tshaj yog perovskite solar cells thiab dye-sensitised solar cells, qhov twg cov pa roj carbon txheej ua raws li cov electrodes rov qab los yog counter electrodes nyob rau hauv qhov chaw ntawm precious hlau.
Peb lub cuab yeej piav qhia txog kev txaus siab. Graphite ua hluav taws xob zoo txaus los sau thiab thauj tus nqi; nws yog tshuaj ruaj khov nyob rau hauv lub xub ntiag ntawm noo noo, oxygen thiab iodide -raws li electrolytes; thiab nws raug nqi tsawg dua li kub, nyiaj lossis platinum thaum tseem sib xws nrog kev luam ntawv thiab txheej txheej siv rau ntawm cov substrates loj.
Graphite Back Electrodes nyob rau hauv Perovskite Solar Cells
Nyob rau hauv lub perovskite lub hnub ci cell lub nraub qaum electrode sau thiab thauj cov nqi tsim tawm thaum lub sij hawm photovoltaic txheej txheem. Cov pa roj carbon thiab graphite cov khaubncaws sab nraud povtseg tau tshawb fawb dav dav los hloov cov hlau electrodes evaporated, thiab lawv coj ntau qhov zoo rau cov khoom siv.
Kev sau nqi tau zoo- cov txheej txheem carbon conductive muab txoj hauv kev txuas mus ntxiv rau kev tshem tawm cov cab kuj, txo cov kev poob qis hauv lub cell.
Tshuaj stability- carbon tsis tshua muaj kev cuam tshuam ntau dua li cov hlau electrodes rau corrosion thiab ion tsiv teb tsaws, thiab nws zam cov dej noo thiab thermal raug thaum lub sijhawm ua haujlwm.
Tsawg- nqi, scalable deposition- graphite pastes thiab carbon inks tuaj yeem siv los ntawm kev tshuaj ntsuam luam ntawv, qhov- txheej txheej tuag lossis cov hniav txheej, txhawb nqa loj - thaj chaw tsim khoom nrog txo cov khoom pov tseg.
Mechanical robustness- cov ntawv luam tawm carbon electrode tsis yooj yim dua li cov yeeb yaj kiab nyias nyias thiab tuaj yeem ua raws li cov txheej txheem yooj yim.
Cov yam ntxwv no ua rau cov pa roj carbon-raws li cov khoom siv perovskite ib txoj hauv kev tseem ceeb rau kev ruaj khov thiab ua lag luam scalable photovoltaics.
Carbon Counter Electrodes hauv Dye-Sensited Solar Cells
Hauv dye-sensitised solar cells lub txee electrode catalyses txo qis tri-iodide ions hauv electrolyte thiab ua tiav txoj kev hloov hluav taws xob. Platinum ib txwm ua tiav lub luag haujlwm no vim nws txoj haujlwm catalytic, tab sis nws cov nqi txwv tsis pub loj - kev xa mus ua lag luam.
Graphite thiab lwm cov ntaub ntawv carbon nyob rau hauv uas txwv thaum khaws cov electrode ua haujlwm:
Zoo hluav taws xob conductivitykom muaj txiaj ntsig zoo khaws cov khoom siv hluav taws xob thoob plaws hauv cheeb tsam electrode.
Kev ua haujlwm catalytic txausrau iodide/tri-iodide redox cov tshuaj tiv thaiv ntawm electrode nto.
Cov khoom siv qis duatshaj platinum, uas yog txiav txim rau tus nqi -sensitive modules.
Haum rau cov khoom siv tau yooj yim thiab loj - cheeb tsam, txij li cov electrode tuaj yeem luam tawm ntau dua li tso rau hauv lub tshuab nqus tsev.
Cov pa roj carbon-raws li cov txee electrodes yog li no tau kawm ntau ntxiv raws li kev hloov pauv hauv cov xim zoo nkauj-sensitised modules nrog rau hauv hybrid thiab tandem architectures.
Cov khoom sib piv thiab kev txiav txim siab ntau lawm
Cov khoom ua haujlwm ntawm cov pa roj carbon electrode nyob ntawm qib graphite, cov txheej txheem khi thiab cov txheej txheem tso tawm, yog li cov lus qhia tshwj xeeb yuav tsum ua raws li tus qauv tsim es tsis yog ib daim ntawv teev nqi.
| Khoom | Cov txiaj ntsig hauv lub hnub ci cell | Parameter los tswj |
|---|---|---|
| High hluav taws xob conductivity | Kev sau nqi thiab kev thauj mus los tau zoo | Resistivity ntawm cov ntawv luam tawm |
| Tshuaj stability | Resistance rau corrosion thiab degradation | Purity, tshauv thiab sulfur cov ntsiab lus |
| Tus nqi khoom qis | Txo cov nqi tsim khoom module | Qib thiab binder xaiv |
| Printing compatibility | Haum rau scalable ntau lawm | Particle loj tis, muab tshuaj txhuam rheology |
| Cov peev txheej carbon ntau | Txhawb kev txhim kho hluav taws xob ruaj khov | Raw khoom traceability |
Particle loj tis thiab paste viscosity feem ntau txiav txim siab cov ntsiab lus thiab txheej txheej, thaum cov hmoov tshauv thiab sulfur qib cuam tshuam ntev -lub sij hawm ruaj khov nyob rau hauv lub xub ntiag ntawm electrolyte. Qhuav thiab curing tej yam kev mob yuav tsum tau sib phim rau lub substrate, vim hais tias qhov kub ntawm lub perovskite txheej yog nyob deb ntawm lub graphitisation kub siv los tsim cov graphite nws tus kheej.
Daim ntawv thov thiab kev taw qhia kev xaiv
Graphite thiab carbon cov ntaub ntawv yog siv tsuas yog nyob rau hauv perovskite rov qab electrodes, dye-sensitised counter electrodes, saj zawg zog photovoltaic li, luam tawm hnub ci modules thiab tsawg- nqi loj- cheeb tsam systems. Nrog rau qhov kev thov nce ntxiv rau kev siv hluav taws xob pheej yig dua, lub luag haujlwm ntawm carbon electrodes hauv kev tsim khoom ntawm tes yuav tsum loj hlob.
Rau kev yuav khoom tshwj xeeb, kho cov khoom ntawm cov txheej txheem kev tso tawm thiab tuaj yeem tshawb xyuas: particle loj faib, thaj chaw tshwj xeeb ntsuas los ntawm BET txoj kev rau GB / T 19587 thiab ISO 9277, cov ntsiab lus tshauv, cov ntsiab lus sulfur thiab noo noo. Rau cov khoom lag luam graphite electrode tau muab rau hauv ntau, qhov loj me thiab kev tsim qauv yog feem ntau hais txog GB / T 3072 thiab IEC 60239, thiab tib txoj kev qhuab qhia ntawm kev txwv kev txwv thiab kev pov thawj batch siv rau cov qib tsim los siv photovoltaic.
Cov lus nug nquag
Q: Vim li cas thiaj hloov hlau electrodes nrog graphite hauv lub hnub ci hlwb?
Graphite muaj kev ua tau zoo thiab tshuaj lom neeg ruaj khov ntawm tus nqi qis dua, thiab nws tuaj yeem luam tawm ntawm cov khoom loj lossis hloov tau yooj yim es tsis txhob muab tso rau hauv lub tshuab nqus tsev.
Q: Lub tshuab hluav taws xob hluav taws xob ua haujlwm li cas hauv cov xim xim -sensited cell?
Nws catalyses txo qis tri-iodide ions nyob rau hauv cov electrolyte thiab sau electrons, ua kom tiav lub Circuit Court uas platinum ib txwm ua hauj lwm nyob rau hauv hom cell.
Q: Puas yog carbon electrodes zoo li platinum counter electrodes?
Conductivity thiab catalytic kev ua ub no nyob ntawm qib graphite, binder thiab deposition txoj kev. Ib qho zoo-cov txheej txheem luam tawm cov pa roj carbon monoxide muab kev ua haujlwm txaus rau ntau yam xim -sensitised designs ntawm tus nqi qis dua.
Q: Cov cuab yeej twg feem ntau cuam tshuam rau kev luam ntawv electrode zoo?
Particle loj faib ua ke nrog paste rheology. Ob leeg tswj kev luam ntawv txhais, txheej thickness uniformity thiab resistivity ntawm tiav zaj duab xis.
Q: Vim li cas cov hmoov tshauv thiab sulfur tseem ceeb?
Residual impurities tuaj yeem hnov mob nrog cov electrolyte thiab degrade cov cuab yeej ruaj khov nyob rau lub sijhawm, yog li kev txwv purity feem ntau pom zoo nrog rau cov khoom siv hluav taws xob.
Q: Cov kev ntsuam xyuas twg yuav tsum nrog cov khoom xa tuaj?
Ib daim ntawv pov thawj batch npog particle loj tis, BET nto cheeb tsam, tshauv thiab leej faj cov ntsiab lus, noo noo thiab, qhov twg muaj feem xyuam, resistivity ntawm ib tug nias los yog luam tawm qauv.