Lub cheeb tsam tshwj xeeb (SSA) yog hais txog tag nrho thaj tsam ntawm thaj chaw ib pawg ntawm cov khoom siv, ntsuas ntsuas hauv ib gram (M² / G). Rau cov duab cuav, qhov ntsuas no cuam tshuam nrog rau nws cov khoom sib xyaw ua ke thiab cov khoom siv hluav taws xob, ua kom nws qhov ntsuas tseem ceeb rau kev ua haujlwm zoo.
Ⅰ.Yuav ua li cas yog thaj chaw tshwj xeeb cuam tshuam kev ua tiav kev ua tiav
1. Muab cov chaw tshaj tawm ntau tshaj plaws
- Raug nthuav tawm cov atoms loj heev txhais tau tias muaj ntau pab pawg atoms, muab cov khoom siv hluav taws xob ntau ntxiv rau cov roj av (xws li roj av thiab kua dej.
- Lub cev adsorption hauv lub cev: hauv kev kos duab lub cev ntawm cov van der Waals rog (xws li cov roj cia thiab tsw txawv teb chaws txiav txim siab adsorption muaj peev xwm adsorption adsorption muaj peev xwm. Piv txwv li, siab {{- nplaim} {}}}}}}} achiev້ອງ tau ua tiav cov txiaj ntsig zoo sib xws tom qab ua kom tiav.
2. Tswj Tshuaj Adsorption
- Cov pab pawg ua haujlwm tau siv: yog cov duab graphite tau hloov kho kom paub cov pab pawg ua haujlwm xws li cov pa tshuaj lom neeg tuaj yeem nthuav dav cov pab pawg, txhim kho cov tshuaj lom neeg muaj peev xwm nthuav dav dav rau cov hlau ions thiab polar lwg me me.
- Pore Cov Qauv Synergy: thaj chaw tshwj xeeb thiab pore faib (micropores<2 nm, mesopores 2-50 nm, macropores >50 nm) ua ke txiav txim siab ua tiav kev xaiv npe:
(1) Micropores: nyiam adsorb me me molecules (xws li h₂ thiab chi);
(2) Mesopores: Pab txhawb cov diffusion ntawm cov molecules loj (xws li dyes thiab cov protein);
(3) MacRopores: Ua haujlwm raws li cov chaw thauj rau cov khoom thauj.
Ⅱ. Lub luag haujlwm tseem ceeb ntawm thaj chaw tshwj xeeb hauv kev hloov pauv
1. Muab cov chaw nquag ua haujlwm
Qhov chaw tsis zoo atoms: thaj chaw tshwj xeeb txhais tau tias ntau dua cov atoms uas tsis muaj kev cuam tshuam rau cov npoo, tsis xws luag, thiab muaj kev cuam tshuam thiab muaj kev cuam tshuam thiab nyiam ua haujlwm. Cov xaib no muaj lub zog loj thiab muaj zog reactivity, ua rau lawv cov chaw tseem ceeb ntawm catalytic thiab electrochemical cov tshuaj tiv thaiv.
2. Txhim kho catalysic kev ua tau zoo
Ncaj qha catalysis: qhov chaw siab ntawm kev hloov kho cov duab cuav tuaj yeem ua rau cov chaw nquag, txhim kho catalytic efficiency.
Txhawb kev ua haujlwm: Thaum siv los ua cov roj cell catalyst kev txhawb nqa, thaj chaw siab tuaj yeem:
- Cov hlau tawg (piv txwv li, PT thiab PT) thiab tiv thaiv agglomeration;
- Txhim kho qhov interface ntawm kev txhawb nqa thiab cov nquag tiv thaiv.
- Pab txhawb cov diffulus ntawm reactants thiab cov khoom lag luam.
3. Kev cuam tshuam rau hauv electrochemical kev ua tau zoo
Lithium {{0} ion roj teeb anode:
- SEI Zaj Duab Xis Tsim: Cheeb Tsam ntau dhau nce thaj tsam electrolyte Yog li no, thaj tsam thaj tsam yuav tsum tau tswj hwm hauv thaj tsam ntawm 1-10 m² / g.
- Tus nqi kev ua tau zoo: Ib qho qauv Porerate txhim kho ION diffusion effenticy, tab sis qhov kev pheej hmoo ntawm cov kev tshwm sim sab nraud yuav tsum tau sib npaug. Supercapacitic Electrodes:
- Ob npaug - txheej thaj chaw muaj peev xwm ua tau zoo dua ntawm cov electrode {1} yog qhov tseem ceeb lav rau lub peev xwm ntawm supercapacitors.
- Pseudocapacitive koom haum: pab pawg saum npoo los yog sib xyaw ua haujlwm pseudocapitive cov ntaub ntawv tuaj yeem txhim kho kom yooj yim deb deb deb ntawm thaj chaw siab.
Ⅲ. Matching cov tswv yim nruab nrab ntawm daim ntawv thov cov xwm txheej thiab thaj chaw tshwj xeeb
| Cov Ntawv Thov | Qhov zoo tshaj plaws thaj chaw ntau | Cov yuav tsum tau ua |
| adsorbent |
>1000 m²/g |
Ua kom tiav lub cev ua kom muaj peev xwm |
| Lithium {{0} ion roj teeb tsis zoo rau hluav taws xob |
1-10 m²/g |
Ntsuas Sei Zaj Duab Xis Tsim thiab Ion Diffusion efficiency |
| Catalanst Carrier | Siab (yuav tsum tau sib phim cov khoom xyaw nquag) | Siab dispersion ntawm cov nquag sib xyaw thiab txhim kho kev cuam tshuam nrog interfacial |
| Supercapacitic Electrodes |
>1500 m²/g |
Kev txhim kho kev txhim kho ntawm ob npaug - txheej txheem capacitance thiab pseudocapacitance |
Ⅳ. Ntsiab lus: Cov duab ntawm ntsuas qhov chaw tshwj xeeb
Qhov tshwj xeeb thaj tsam ntawm cov duab cuav yog lub cev lub hauv paus ntawm nws qhov kev ua tau zoo, tab sis loj dua tsis yog zoo dua:
- Cov txiaj ntsig zoo: hauv Adsorbents, kev txhawb nqa catalyst, Supercapacitors, thiab lwm thaj chaw muaj ntau thaj chaw zoo dua los ntawm kev nce cov chaw.
- Cov kev txwv: Hauv cov ntawv thov xws li Lithium {{ion roj teeb, thaj chaw nto tshwj xeeb yuav tsum tsis txhob sab nraud thiab kev ua tau zoo.
Ua kom muaj kev ua tau zoo ntawm cov khoom siv cuav uas yuav tsum tau ua kom zoo ntawm thaj chaw saum npoo av, cov qauv poristry, thiab theem ntawm graphitization raws daim ntawv thov cov xwm txheej. Los ntawm cov saum toj no, peb muaj cov txheej txheem txheeb xyuas lub tshuab los ntawm qhov chaw tshwj xeeb cuam tshuam nrog kev ua haujlwm ntawm cov kab ke cuav thiab cov npe thov. Yog tias koj xav tau customized graphite cov ntaub ntawv nrog cov khoom tshwj xeeb, thov hu rau peb rau kev daws teeb meem.
