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Tsev > Txuj ci kev lag luam > Cov ntsiab lus

Tus Anode yog dab tsi?

Edit: Shaanxi Elade tshiab khoom Technology Co., Ltd    Date: Apr 18, 2016

Anode

Tus anode yog tus electrode mus txog twg pa tam sim no tsev ua hluav taws xob ib tug dais polarized. Ib hom mnemonic yog kua QAUB rau "anode tam sim no rau hauv tej dais". Ntawm (zoo) fais tam sim no yog opposite to uas txaus electron: electrons (tshuam them) txaus seb tus anode mus rau hauv Circuit Court nraum zoov.

Lub polarity ntawm voltage rau ib tug anode txoj kev mob cathode nws txawv nyob ntawm seb yam ntaus ntawv thiab rau nws cov hauj lwm hom. Cov piv txwv nram qab no, yog tsis zoo rau hauv tej dais uas muab hwj huam rau anode, thiab zoo rau ib tug dais uas kov fais fab.

Muaj discharging roj teeb galvanic cell (daim duab hauv txoj cai), yog tus anode yog tus tsis zoo davhlau ya nyob twg vim nws yog ib qhov twg tam sim no faib rau hauv "tus dais" (xws li lub roj teeb ntawm tes). Qhov chaw sab hauv yog nas hauv nras externally electrons mus outwards, tsis yuav nqi ntws hauv ib li siab xav tau tshaj electrically kom zoo xwb ntws khiav hauv kev.
Lub roj teeb recharging, los yog ib electrolytic ntawm tes, tus anode yog tus zoo davhlau ya nyob twg, uas tau txais tam sim no los ntawm ib lwm generator. Cov chaw hauv lub roj teeb recharging yog opposite to uas tam sim no lub sij hawm kws; ua txhais, cov electrode uas yog tus cathode lub roj teeb kws yuav tus anode thaum lub roj teeb recharging.
Diode, cov anode yog tus zoo davhlau ya nyob twg thaum tus Tsov tus tw ntawm tus xub cim (ncaj nraim sab ntawm koj lub daim duab peb sab), uas tam sim no faib mus ua cov ntaus. Ceeb toom electrode naming rau diodes yeej raws li ntawm cov pem chaw (cov xub, uas cov chaw faib ua "mas yooj yim"), txawm rau Zener diodes los solar hlwb cov chaw uas txaus siab qhov twg cov chaw tshab.
Ib tug cathode txoj sab ci tube, tus anode yog tus zoo davhlau ya nyob twg qhov twg electrons ntws tawm ntawm tus ntaus ntawv, xws li, qhov twg zoo fais tamsis no faib ua nyob rau hauv.

Ndlwg ntawm electrons
Txaus rau ntawm electrons nyob rau yeej anode los cathode lwm qhov ntawm tes los yog ntaus ntawv, tsis hais cov hom ntawm tes los yog ntaus ntawv thiab hom hauj lwm, tshwj qhov diodes, qhov twg electrode naming yeej assumes tam sim no nyob rau hauv cov kev taw qhia pem (uas ntawm lub xub cim), i.e., electrons txaus khiav hauv kev, txawm tias cov diode nraud-qha kuas ua txhua leej sib tsoo (tsis tau ib qho diode) los yog tsim (lawm ib Zener diode Diam duab-tam sim no txog ib photodiode).

Electrolytic anode
Electrochemistry, cov anode yog qhov twg oxidation muaj tshwm sim thiab yog kev tiv tauj polarity zoo nyob rau lub electrolytic ntawm tes. Ntawm anode, anions (ions tsis zoo) yog yuam raws qhov hluav taws xob tej zaum sib hnov mob thiab muab tawm electrons (oxidation) yam ntawd txaus mus thiab mus ua tus tsav Circuit Court. Mnemonics: LEO Red miv (poob ntawm Electrons yog Oxidation, yuav txo tau kev tshwm sim li ntawm lub Cathode), AnOx liab miv (Anode Oxidation, txo Cathode), los yog roj RIG (Oxidation yog hluav taws, yog txo koj qhov nce ntawm electrons), los yog kav thaus liv Roman thiab Orthodox (yuav txo tau-Cathode, anode-Oxidation), los sis LEO tus Tsov hais NTXAWG (cwj electrons Oxidation, Gaining electrons yog txo).

Txoj kev no yog lug siv hauv refining co. Piv txwv, hauv tooj liab refining, tooj liab anodes, ib yam khoom intermediate ntawm lub furnaces, yog electrolysed nyob rau hauv ib cov tshuaj (xws li sulfuric acid) rau cov paib purity siab cathodes (99.99%). Tooj liab uas ua siv tus qauv no cathodes yog nyob li tooj electrolytic.


Sacrificial anode

Sacrificial anodes mounted "ntawm yoov" corrosion tiv thaiv ib tug ntseg hlau
Cathodic kev tiv thaiv, ib tug hlau anode uas yog reactive rau lub chaw corrosive ntawm lub cev yuav tiv thaiv tau nws yog electrically uas yuav zoo rau lub cev tiv thaiv, thiab cov corrodes los yog dissolves, uas tiv cov hlau ntawm nws txuas nrog rau lawv. Raws li tus piv txwv, tus hlau los yog hlau nkoj tus hull yuav tiv thaiv ua ntej los ntawm ib tug zinc sacrificial anode, uas yuav yaj mus ua tus seawater thiab tiv thaiv lub hull los yog corroded. Sacrificial anodes yog tshwj xeeb tshaj yog yuav tsum tau tshuab uas muaj zoo li qub xwb no generated los ntawm qhov kev txiav txim ntawm ntws kua ntau xwb, xws li cov pipelines thiab watercraft. Sacrificial anodes feem ntau kuj siv nyob rau hauv hom tank dej tso cua sov.

1824 rau kom tug electrolytic daim ntawv no rau ships hulls, cov fastenings thiab underwater, khoom ntawm tus paub txog-tug engineer Sir Humphry Davy, tsim lub npe thiab tseem ntau lug siv marine electrolysis tiv thaiv lawv. Davy ntsia sacrificial anodes ua los ntawm ib tug reactive ntau electrically (tsawg noble) hlau uas txuas tus txog ntsha hull thiab electrically txuas nrog tsim ib txoj kev tiv thaiv cathodic Circuit Court.

Lub kuj cuab kev piv txwv ntawm hom kev tiv thaiv yog txoj hlau galvanising. Txoj kev no coats hlau lug (xws li fencing) nrog rau lub txheej ntawm zinc hlau. Raw li tus zinc tshua lawm, hlau yog kev tiv thaiv los ntawm corrosion. Inevitably, tus laj txheej zinc yuav ua raws, tog twg los yog cracking los yog lub cev puas tsuaj. Tom qab qhov no tshwm sim, corrosive hais ua ib ntsha thiab ua ke nrog zinc/hlau ua electrodes. Cov chaw resultant Saib kuas tias tus zinc txheej yog sacrificed tab sis tias hlau los luj tsis corrode. Zoo li no ib txheej tiv thaiv tau ib lub qauv hlau rau ob peb xyoo lawm, tiam sis thaum cov txheej protecting ntim, hlau loj corrodes.


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