Core Application Description
Kev Ua Haujlwm Kev Ua Haujlwm: Raws li "skeleton" ntawm cov roj hlwb, lawv yuav tsum ua kom tau raws li peb qhov tseem ceeb ntawm "gas sealing (tiv thaiv kom tsis txhob ntws), hluav taws xob thiab thermal conductivity, thiab corrosion thiab hnav tsis kam", uas cuam tshuam ncaj qha rau lub zog ceev, lifespan, thiab kev nyab xeeb ntawm pawg.
Tsim nyog Scenario:
Feem ntau yog yoog rau proton txauv membrane roj hlwb (PEMFCs), tshwj xeeb tshaj yog tsim rau 30-150kW kev lag luam tsheb (logistics tsheb, tsheb loj), 5-20kW cov khoom siv hluav taws xob, thiab cov chaw tsim hluav taws xob ruaj khov.
Piv nrog cov hlau bipolar daim hlau, lawv tsim nyog rau cov xwm txheej rhiab rau tus nqi thiab nrog cov kev xav tau ntawm lub zog nruab nrab; piv nrog cov khoom sib xyaw bipolar daim hlau, lawv muaj cov hluav taws xob zoo tshaj thiab thermal conductivity thiab ntev lifespan.
| kev faib tawm | qhov project tshwj xeeb | Cov kev cai tseem ceeb/scope | Kev piav qhia (hloov mus rau roj cell yuav tsum tau) |
| 1. Cov yam ntxwv ntawm lub cev | |||
| ceev | 1.80-1.95g / cm³ (nruab nrab 1.85-1.90g / cm³) | Tsawg ntom → siab porosity, yooj yim rau to; Ntau dhau → kev ua haujlwm nyuaj thiab nce nqi, 1.85-1.90g / cm ³ sib npaug kev ua haujlwm thiab tus nqi | |
| Porosity (tom qab immersion) | Tsawg dua lossis sib npaug li 5% (substrate porosity ntawm 15% -20%) | Cov pores yuav tsum tau sau los ntawm impregnation los tiv thaiv hydrogen / oxygen to thiab electrolyte to, kom ntseeg tau tias lub sealing ntawm cov roj cell pawg. | |
| tus nqi nqus dej | Tsawg dua lossis sib npaug li 1% | Tsawg dej nqus tus nqi zam qhov cuam tshuam ntawm cov khoom siv dej nqus ntawm cov khoom siv hluav taws xob thiab cov qauv kev ruaj ntseg | |
| 2. Conductivity thiab thermal conductivity | |||
| ntim resistivity | Tsawg dua los yog sib npaug li 10 μ Ω· m (zoo dua Tsawg dua lossis sib npaug li 8 μ Ω· m) | Tsis tshua muaj resistivity txo qhov tam sim no conduction poob, txhim kho pawg efficiency, thiab ua tau raws li qhov yuav tsum tau conductivity ntawm Ntau tshaj los yog sib npaug rau 180S / cm rau pawg | |
| thermal conductivity | Ntau tshaj lossis sib npaug rau 120W / (m·K) (25 degree) | Ua sai sai cov tshuaj tiv thaiv tshav kub ntawm cov roj cell pawg, zam lub zos overheating ua rau aging ntawm daim nyias nyias electrode, thiab hloov mus rau dej -txias / cua- txias cua sov dissipation systems | |
| 3. Mechanical zog | |||
| compressive zog | Ntau dua lossis sib npaug rau 60MPa (zoo dua ntau dua lossis sib npaug rau 80MPa) | Tiv thaiv lub siab sib dhos ntawm cov roj cell pawg (feem ntau 0.5-1.0MPa) kom tsis txhob deformation lossis rupture | |
| Ntug Hardness (HS) | Ntau dua lossis sib npaug rau 60 (tom qab immersion) | Txhim kho qhov hnav tsis kam, txo kev sib txhuam tsis zoo nrog cov membrane electrodes, thiab txuas ntxiv kev pab cuam lub neej | |
| tawg toughness | Ntau dua lossis sib npaug rau 1.2MPa·m¹/² | Tsis txhob tawg tawg thaum lub sijhawm ua haujlwm lossis siv, thiab hloov mus rau qhov pib nquag -nce thiab kaw cov xwm txheej ntawm lub reactor | |
| 4. Cov khoom siv tshuaj | |||
| Tsau cov ntsiab lus carbon | Ntau dua lossis sib npaug rau 99.95% (siab- qib purity), nyiam dua ntau dua lossis sib npaug rau 99.99% | Tsawg impurities (cov ntsiab lus tshauv Tsawg dua los yog sib npaug li 5ppm) tiv thaiv cov khoom siv corrosion los ntawm kev kis kab mob ntawm daim nyias nyias electrode, kom ntseeg tau 5000-8000 teev kev pabcuam lub neej ntawm cov roj cell. | |
| cov ntsiab lus tshauv | Tsawg dua lossis sib npaug rau 5ppm (zoo dua Tsawg dua lossis sib npaug rau 3ppm) | Cov impurities (Fe, Si, Al, thiab lwm yam) tuaj yeem ua rau lub degradation ntawm daim nyias nyias electrodes thiab yuav tsum tau tswj nruj me ntsis. | |
| corrosion kuj | Resistant mus rau 0.5-2.0mol / LH ₂ SO ₄ (80 degree) thiab 100% av noo ib puag ncig, tsis muaj corrosion los yog leaching | Hloov mus rau qhov chaw ua haujlwm acidic ntawm cov roj hlwb, tsis muaj kev ua haujlwm tsis zoo tom qab siv sijhawm ntev - | |
| 5. Kev ua haujlwm raug | |||
| flatness | Tsawg dua lossis sib npaug li 0.02mm / m (zoo dua Tsawg dua lossis sib npaug rau 0.015mm / m) | Xyuas kom nruj haum nrog daim nyias nyias electrode, txo kev tiv thaiv kev tiv thaiv, thiab tiv thaiv roj to | |
| qhov kam rau ua | ± 0.03mm (qhov tseem ceeb) | Kho kom haum raws li qhov yuav tsum tau ua kom raug ntawm cov khoom faib khoom kom tsis txhob sib khi tsis ua haujlwm los ntawm qhov sib txawv ntawm qhov sib txawv | |
| Channel machining raug | Channel dav / qhov tob kam rau ua ± 0.02mm, nto roughness Ra Tsawg dua los yog sib npaug rau 0.8 μ m | Uniformly faib hydrogen / oxygen kom txo cov kua dej thiab txhim kho pawg tshuaj tiv thaiv kev ua haujlwm | |
| 2, Cov yam ntxwv ntawm cov khoom siv graphite | 1. Cov yam ntxwv tseem ceeb | High purity, siab ceev, tsawg porosity, zoo heev hluav taws xob thiab thermal conductivity, muaj zog tshuaj stability, zoo corrosion kuj. | Txuas ncaj qha rau cov ntsiab lus tseem ceeb ntawm "kev tiv thaiv tawm, kev poob qis, thiab lub neej ntev" rau roj hlwb |
| 2. Feature adaptability | -High purity → corrosion-tiv taus thiab tsis muaj kuab paug impurity; -High ceev → low porosity to tiv thaiv; -High conductivity thiab thermal conductivity → txo lub zog poob | Ib qho -rau- ib qho kev sib txuas lus ntawm cov yam ntxwv thiab cov yam ntxwv tsis zoo yog lub hauv paus rau kev ua kom tau raws li kev ua haujlwm ntawm cov roj hlwb | |
| 3. Kev txwv thiab kev txhim kho | Siab brittleness thiab tsis muaj zog cuam tshuam → lub zog yog txhim kho los ntawm impregnating resin / hlau; Kev ua haujlwm siab → Optimizing CNC tshuab | Cov kev txwv yuav tsum tau hais los ntawm kev xaiv cov khoom siv thiab kev ua haujlwm kom haum rau qhov kev siv tiag tiag | |
| 3, Cov txheej txheem xaiv | 1. Hom substrate | Ua ntej isostatic pressed graphite (nrog zoo isotropy) thiab tsis suav nrog molded graphite (nrog anisotropy cuam tshuam rau conductivity thiab tshav kub conduction) | Isostatic siab graphite ua kom muaj kev ua tau zoo nyob hauv ntau qhov chaw ntawm cov roj cell pawg, tsis txhob muaj cua sov hauv zos lossis cov khoom siv tsis zoo. |
| 2. Cov cim tseem ceeb ntawm substrate | Cov pa roj carbon ntau dua lossis sib npaug 99.95%, cov ntsiab lus tshauv Tsawg dua lossis sib npaug ntawm 5ppm, ntom 1.85-1.90g / cm³, porosity 15% -20% | Kev ua tau zoo ntawm cov substrate ncaj qha txiav txim siab qhov kawg ntawm cov phaj bipolar, thiab kev tswj xyuas nruj ntawm cov khoom siv los xaiv | |
| 3. Kev xaiv cov khoom siv impregnating | -Cov xwm txheej ib txwm: Phenolic resin (tus nqi qis, cov txheej txheem paub tab); -Ib nrab mus rau theem siab kawg: epoxy resin (nrog rau qhov kub thiab txias); -High fais fab xwm txheej: tooj liab / Tin (txhim kho lub zog thiab thermal conductivity) | Raws li cov neeg siv xav tau, phenolic resin yog tsim rau nruab nrab lub zog thiab tus nqi rhiab qhov xwm txheej, suav txog ntau dua 80% ntawm kev ua lag luam. | |
| 4. Kev txheeb xyuas cov khoom siv | Daim ntawv qhia txog kev sim substrate (tsawg carbon, cov ntsiab lus tshauv, ntom) thiab cov ntawv tshaj tawm kev ntsuas kev ua haujlwm tom qab impregnation (porosity, corrosion resistance) | Xyuas kom meej tias cov khoom xaiv ua tau raws li cov txheej txheem xa khoom siv ntawm cov roj cell manufacturers | |
| 4, Cov kev xav tau ntawm kev ua haujlwm | 1. Cov txheej txheem tseem ceeb | CNC precision machining → nqus siab impregnation → kho kho → nto polishing → Hoobkas tshuaj xyuas | Txhua tus txheej txheem cuam tshuam rau qhov kev ua tau zoo kawg, thiab impregnation thiab kev ua kom raug yog cov ntsiab lus tseem ceeb tswj |
| 2. Cov txheej txheem tseem ceeb | - CNC machining: spindle ceev 10000-15000rpm, pub tus nqi 50-100mm/min; -Immersion txheej txheem: Nqus℃Tsawg dua los yog sib npaug rau 0.095MPa, kub 160-180 degree, rwb thaiv tsev 2-4 teev; - Kev kho deg: Ra Tsawg dua lossis sib npaug ntawm 0.8 μ m | Optimize kev ua tsis tau kom txo tau ntug breakage thiab kab nrib pleb, thiab xyuas kom meej lub pore filling los ntawm impregnation tsis | |
| 3. Cov txheej txheem tseem ceeb | -Channel ua: siv lub pob kawg milling cutters kom tsis txhob muaj cov ces kaum ntse (kom tiv thaiv kev ntxhov siab); -Immersion: resin cov ntsiab lus ntawm 30% -40%, kom ntseeg tau qhov tob tob | Kev tsim ntawm cov dej ntws cuam tshuam cuam tshuam rau cov pa xa tawm, thiab cov impregnation zoo txiav txim siab qhov kev ua haujlwm ntawm cov dej xau | |
| 4. Cov qauv ntsuas | Lub Hoobkas tshuaj xyuas cov khoom: ntom, porosity, resistivity, flatness, dimensional kam rau ua, airtightness (gas permeability Tsawg dua los yog sib npaug rau 1 × 10 ⁻⁸ cm ² / s) | ||
Cim npe nrov: Tuam Tshoj roj cell graphite phaj manufacturers, lwm tus neeg, Hoobkas
