Raws li cov khoom siv hlau ntxig hlau, ni {{{}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Fe Electrolysis Hydrogen Cov Khoom Siv Ntau Lawm, tshwj xeeb tshaj yog nyob rau hauv alkaline electrolyzers

Raws li cov khoom siv hlau ntxig hlau, ni {{{}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Fe Electrolysis Hydrogen Cov Khoom Siv Ntau Lawm, tshwj xeeb tshaj yog nyob rau hauv alkaline electrolyzers. Hauv qab no yog cov ncauj lus kom ntxaws ntxaws los ntawm ob yam ntawm daim ntawv thov cov xwm txheej thiab sib piv cov txiaj ntsig zoo:

I. DAIM NTAWV THOV NI {- Fe Ua Npuas Ncauj Hauv Cov Dej Electrolysis Hydrogen Ntau Lawm
1. Raws li cov khoom siv hluav taws xob

Cathode (hydrogen evolutionaction, nws): hlau {{- nickel alloy muaj kev tawm tsam hydrolution allolution, tshwj xeeb tshaj yog nyob hauv ib puag ncig alkaline.

Anode (Oxygen Evolution cov tshuaj tiv thaiv, OER): Nickel {{} Cov ntaub ntawv catalalzers, thiab cov hlau doping tuaj yeem txhim kho lawv cov haujlwm (xws li ni {fe oxide txheej).

Cov khoom lag luam electrode hluav taws xob: los ntawm kev hloov kho nto (xws li hauv - lia hydroceal), nws / o ua tiav, piv rau cov qauv electrolyzer.

2. Txhawb nqa substrate

Peb lub - qhov chaw ruaj khov ntawm ni {}}}}}}} kev ua kom zoo nkauj lossis cov khoom siv hlau ua kom zoo dua.
3. Cov txheej txheem kev sib txawv (GDL)
Nws cov siab tshaj plaws (70-95%) thiab caplicity fine electrolyte nkag mus los ntawm cov bubblealial blockage.

2. Piv txwv zoo ntawm cov hlau ua hlau - nickel
1. Piv nrog cov khoom siv hlau muaj nuj nqis (xws li PT, Iro₂)
{{{0 {0} Tus nqi siv nqi} {- Cov khoom siv npib tsib caug, thiab cov nqi muaj txiaj ntsig zoo, uas muaj cov khoom siv tau txo qis.
- Stability: Corrosion Resistance yog zoo dua li cov neeg muaj peev xwm zoo tshaj (xws li PT yog yooj yim oxidized thiab deactivated hauv ib puag ncig alkaline).
{- dual {}} Cov hlau} Cov neeg muaj peev xwm tshwj xeeb rau nws (xws li cov pa roj hmab tshwj xeeb (hiam)
2. Piv nrog tsoos hlau hluav taws xob (xws li stainless hlau, npib tsib xee)
-} Cov qauv ua npuas ncauj nce qhov chaw ua npuas dej ua nce thaj tsam los ntawm cov chaw nquag, thiab txo qis qhov chaw ntom tam sim no.
{- cua tshuab hluav taws xob muaj zog: lub cev muaj zog thiab ua kom zoo dua li cov oxide {}
{{0- huab cua hloov efficiency: Qhib Pores Accelerate Electrolyte kev tso tawm thiab npuas txo cov polarization.
3. Piv nrog carbon - raws cov ntaub ntawv (xws li cov ntawv carbon), graphite)
- Hinterity: Intrinsic conduction ntawm cov hlau (~ 10⁶ S / M) yog qhov zoo dua li cov ntaub ntawv carbon (~ 10²-10 feeb s / m).
{{0- ecidation tsis kam: ntev - Kev ua haujlwm hauv Alkaline ib puag ncig tsis muaj teeb meem carbon corrosion thiab lub neej ntev dua.
4. Kev sib piv nrog kev hloov tsheb hlau oxides / sulfides
{{{0} Txoj kev npaj npaj yooj yim: Foeded Hlau Nickel tuaj yeem siv ncaj qha rau cov hluav taws xob tsis muaj txheej txheem lossis cov txheej txheem sintering.
{{0-} Ua ke ua ke: Zam kev sib cuag tiv thaiv teeb meem ntawm oxide catalyst thiab tus sau tam sim no.

3. Cov ntsiab lus ntawm cov tub ntxhais kev ua tau zoo
Cov yam ntxwv Nickel Ua Npuas Ncauj Ua Si Ntawm Lwm Cov Ntaub Ntawv
Specific surface area Three-dimensional porous structure (porosity>90%), ntau qhov chaw nquag muaj txwv thaj chaw ntawm cov khoom siv tiaj tus lossis cov ntaub ntawv tuab
Conductivity hlau - qib xyaum ua (10⁶ s / m), qis impedance tsis zoo rau cov neeg oxides / sulfides (yuav tsum tau cia siab rau cov nqa khoom)
NEEG KHO TSHUAB POB ZEB EXIGINTION RAU HIGHT TAM SIM NTAWB
Nqi pheej yig pheej yig, siv lub tshuab tsim tau siab ntau ntawm cov hlau muaj nqis, ua cov carbon {}}} Cov ntaub ntawv
Cov txheej txheem sib xyaw tuaj yeem raug txiav ncaj qha thiab tsim, tau sib haum nrog}-}- roll manufeed brittle cov ntaub ntawv (xws li ceramics) yog qhov nyuaj rau cov txheej txheem

4. Cov Lus Qhia Kev Txhim Kho thiab Kev Txhim Kho
Txawm hais tias nws qhov tseem ceeb, Nickel ua npuas ncauj tseem yuav tau ua kom zoo:
1. Acidic ib puag ncig kev txwv: Tam sim no tsuas yog siv nyob rau hauv cov tshuaj electrolytic cell, nws yog ib qho yooj yim rau corrode nyob rau hauv acidic tej yam kev mob.
2. Txhim kho catalytic kev ua si: txhim kho cov kev ua si ntawm nano-} - cov ntaub ntawv (xws li graphene).
3. Ntev {- Lub sij hawm ruaj khov: Nrov roj hloov pauv yuav ua rau cov qauv vau, thiab cov qauv pore qauv tsim, thiab cov qauv pore qauv qauv tsim kom tau zoo.

V. Xaus
Foamed nickel iron has become a highly competitive electrode material in alkaline water electrolysis hydrogen production due to its unique three-dimensional porous structure, high conductivity, low cost and easy processing. Especially in the scenario of industrial-grade high current density (>500 ma / cmo), nws qhov loj hloov thiab ruaj khov zoo rau cov txiaj ntsig zoo dua. Nyob rau hauv lub neej yav tom ntej, los ntawm kev hloov kho saum npoo thiab kev ua kom zoo dua qub, nws yuav tsum tau txuas ntxiv rau cov khoom lag luam hlau zoo thiab txhawb nqa ntawm ntsuab hydrogen ntau lawm tshuab.