Chii chinonzi graphite bipolar plate?

Graphite bipolar ndirochinhu chakakosha chinoshandiswa mumagetsi emagetsi akadai semafuta maseru uye maelectrolyzers, anowanzo gadzirwa nepamusoro-kuchena graphite zvinhu. Inoita basa rakakosha mukuita kwe electrochemical, inonyanya kushandiswa kuita zvazvino, kugovera magasi ekuita (akadai sehydrogen neokisijeni), uye nzvimbo dzakasiyana dzekuita. Nekuti mativi ayo maviri anobata anode uye cathode yemaseru ari padyo nesero rimwe chete, achigadzira chimiro che "bipolar" (rimwe divi inzvimbo inoyerera yeanode uye rumwe rutivi ndiyo cathode flow field), inonzi bipolar plate.

Chimiro chegraphite bipolar plate

Graphite bipolar plates kazhinji ine zvikamu zvinotevera:
1. Flow Field: Pamusoro pebipolar plate yakagadzirwa neyakaoma kuyerera kwemunda chimiro kugovera zvakaenzana gasi rekuita (senge hydrogen, okisijeni kana mweya) uye kuburitsa mvura inogadzirwa.

2. Conductive layer: Graphite zvinhu pachazvo zvine yakanaka conductivity uye inogona kuitisa ikozvino zvakanaka.

3. Nzvimbo yekuisa chisimbiso: Mheto yemapuleti ebipolar anowanzo gadzirwa aine zvisimbiso zvimiro kudzivirira kubuda kwegasi uye kupinda kwemvura.

4. Zviteshi zvekutonhodza (sarudzo): Mune mamwe maapplication epamusoro-soro, nzira dzekutonhodza dzinogona kugadzirwa mukati mebipolar plates kudzora tembiricha yekushandisa yemidziyo.

Mabasa egraphite bipolar plates

1. Conductive basa:

Seye electrode yemagetsi emagetsi, iyo bipolar plate ine basa rekuunganidza uye kuitisa ikozvino kuti ive nechokwadi chekubuda kwesimba remagetsi.
2. Kugovera gasi:

Kuburikidza nekuyerera dhizaini dhizaini, iyo bipolar ndiro inogovera zvakaenzana gasi rekuita kune inokonzeresa layer, ichisimudzira iyo electrochemical reaction.
3. Kupatsanura nzvimbo dzekuita:

Mumafuta emafuta kana electrolyzer, bipolar plates inoparadzanisa anode uye cathode nzvimbo, kudzivirira magasi kubva pakusanganiswa.
4. Kubvisa kupisa uye kubuda mvura:

Bipolar mahwendefa anobatsira kudzora tembiricha yekushandisa yemidziyo uye kuburitsa mvura kana zvimwe ne-zvigadzirwa zvinogadzirwa nekuita.
5. Mechanical rutsigiro:

Bipolar plates inopa tsigiro yekuumbwa kwe membrane electrode, kuve nechokwadi kugadzikana uye kusimba kwemidziyo.

Sei uchisarudza graphite sebipolar plate zvinhu?

Zvinhu zve graphite bipolar plates
●High conductivity:

Iyo yakawanda resistivity yegraphite yakadzikira se10-15μΩ.cm (zviri nani pane 100-200 μΩ·cm yesimbi bipolar ndiro) .

●Corrosion resistance:

Zvinenge pasina kuora munzvimbo ine acidic yemafuta masero (pH 2-3), uye hupenyu hwebasa hunogona kusvika maawa anopfuura 20,000 .

●Huremu:

Density inenge 1.8 g/cm3 (7-8 g/cm3 yesimbi bipolar plate), iyo inobatsira pakudzikisa huremu mumashandisirwo emotokari.

●Gas barriers zvivakwa:

Iyo dense chimiro chegraphite chinogona kudzivirira zvinobudirira hydrogen kupinda uye ine yakanyanya kuchengetedzwa.

●Easy processing:

Graphite zvinhu zviri nyore kugadzirisa uye zvinogona kugadzirisa yakaoma kuyerera chiteshi magadzirirwo uye saizi zvinoenderana nezvinodiwa.

Ko graphite bipolar plates inogadzirwa sei?

Nzira yekugadzira yegraphite bipolar ndiroinosanganisira zvinotevera:
●Kugadzirira kwezvinhu:

Shandisa kuchena kwepamusoro (> 99.9%) magirafu echisikigo kana kuti artificial graphite powder.

Wedzera resin (senge phenolic resin) sebinder kuti uwedzere simba remagetsi.

●Compression Molding:

Iyo yakasanganiswa zvinhu inoiswa muforoma uye inotsikirirwa pasi pekushisa kwepamusoro (200-300 ℃) uye yakanyanya kudzvanywa (> 100 MPa).

●Graphitization kurapwa:

Kupisa kusvika ku2500-3000℃ mumhepo inert inoita kuti zvinhu zvisiri kabhoni zvinyunguduke uye kuita dense graphite chimiro.

●Runner processing:

Shandisa CNC michina kana lasers kuveza kunze nyoka, parallel kana interdigitated chiteshi (kudzika 0.5-1 mm).

●Surface treatment:

Impregnation ine resin kana simbi (yakadai segoridhe, titanium) coating inoderedza kusangana kuramba uye inonatsiridza kupfeka kuramba.

Ndeapi mashandisirwo emagraphite bipolar plates?

1. Fuel Cell:

- Proton exchange membrane fuel cell (PEMFC)

- Solid Oxide Fuel Cell (SOFC)

- Yakananga Methanol Fuel Cell (DMFC)

2. Electrolyzer:

-Kugadzirwa kweHydrogen nemvura electrolysis

- Chlor-alkali indasitiri

3. Simba rekuchengetedza system:

- Flow bhatiri

4. Chemical Indasitiri:

- Electrochemical Reactor

5. Tsvakurudzo yemurabhoritari:

-Prototype kuvandudza uye kuyedzwa kwemafuta masero uye electrolyzers

Pfupisa

Graphite bipolar plateszvinhu zvakakosha zvemidziyo yemagetsi senge masero emafuta uye magetsi emagetsi, uye zvine mabasa akati wandei senge conductivity, kugovera gasi, uye kupatsanurwa kwenzvimbo dzekuita. Nekuvandudzwa kwesimba rakachena tekinoroji, graphite bipolar mahwendefa ari kuwedzera kushandiswa mumagetsi matsva emagetsi, masisitimu ekuchengetedza simba, kugadzirwa kwemakemikari hydrogen uye mamwe minda.