Munyaya yekuchengetedza simba repamusoro, mabhatiri ekuyerera akave achishanda kwenguva refu, kunyanya pakushandiswa kwakafanana nekubatanidza grid, kubatanidzwa kwesimba rinogona kudzokororwa, uye masisitimu ekuchengetedza eindasitiri. Pakati pezvinhu zvikuru zvinosarudza mashandiro uye hurefu hwemasisitimu aya, graphite felt inoonekwa sechinhu chakakosha—kunyanya mukati mehurongwa hwe electrode.
Graphite yakanzwachinhu chine maburi, chakagadzirwa nekabhoni chine mafambiro emhepo akawanda, chinodzivirira makemikari, uye kugadzikana kwekupisa. Izvi zvinoita kuti chikwanise kushandiswa nema flow battery systems, uko ma liquid electrolytes anoramba achipfuura nepakati pe electrochemical cells panguva yekuchaja nekuburitsa ma cycles. Kusiyana nemabhatiri echinyakare uko ma electrodes ari madiki uye akasimba, flow battery dzinoshandisa kufamba kwemvura nguva dzose pamusoro pe electrode. Graphite felt, nekuda kwe fibrous network yayo nenzvimbo yakakura, inopa nzira inoshanda yekufambisa ma electron uye redox reactions.
Mumabhatiri evanadium redox flow (VRFBs), ayo ari pakati pemhando dzakakura dzekutengesa, graphite felt inowanzo shandiswa kune ese ari maviri ma electrodes akanaka neasina kunaka. Nzvimbo yakakwirira inokurudzira kusangana zvinobudirira ne vanadium ions mu electrolyte, nepo kugadzikana kwechinhu ichi pasi penzvimbo dzine acid yakawanda kunovimbisa kugara kwenguva refu kwezviuru zvema cycles. Uyezve, chimiro chayo chinochinjika chinobvumira mainjiniya kugadzira kana kudzvanya felt kuti iwedzere kumanikidzwa kwekubatana, kuderedza kuramba kwemukati, uye kuvandudza kushanda kwemagetsi.
Kugadzirwa kwegraphite felt kunowanzo sanganisira carbonization ye synthetic fibers, senge PAN (polyacrylonitrile), pasi pemhepo inodzorwa, zvichiteverwa ne thermal activation treatments. Kurapa uku kunowedzera simba remagetsi pamusoro, zvichiita kuti pave nenzvimbo dzinoita kuti pave ne redox reactions. Mhando dzepamusoro dzegraphite felt dzinogonawo kuputirwa ne metal oxides kana mamwe ma layers anoshanda kuti pave ne selectivity, kuderedza polarization loss, uye kukurumidzisa reaction kinetics.
Imwe mukana unoshamisa we graphite felt kupfuura ma electrode esimbi kana kuti akasimba ane carbon-based electrodes iri muchimiro chayo che three-dimensional microstructure. Network ye fiber yakabatana haingobatsiri chete kugoverwa kwema electrolyte akafanana asiwo inoshivirira kusawirirana kudiki kwekuyerera kwemhepo kana kushanduka kwedzvinyiriro, izvo zvinowanzoitika mumasisitimu makuru ekuchengetera simba. Izvi zvinobatsira kuchengetedza mashandiro e electrochemical akafanana kunyangwe mumamiriro ezvinhu anochinja-chinja e dynamic load.
Mumasystem anoshanda, graphite felt haisi chinhu chinongoshandiswa chete. Kushanda kwayo kunoenderana zvikuru nekugadzirwa kwemasero, chiyero chekumanikidzwa, kuumbwa kweelectrolyte, uye tembiricha yekushanda. Mainjiniya anofanirwa kuyera nekungwarira porosity, conductivity, uye kumanikidzwa pavanosarudza chinhu chakakodzera chefelt. Kuwanda kwakanyanya kunogona kukonzera kurasikirwa kwe ohmic, nepo mafelt akawandisa anogona kudzora kufamba kwemvura uye kuderedza mwero wekutakura maion.
Ongororo iri kuenderera mberi iri kutsvaga nzira dzekusundira miganhu yekushanda kwegraphite felt. Imwe nzira inosanganisira kugadzirisa nzvimbo dzefiber kuti dziunze mapoka anoshanda anosarudza kukurudzira ma redox couples chaiwo. Imwe pfungwa ndeyema hybrid felts anobatanidza graphite nezvimwe zvinhu zvinofambisa mhepo zvakaita se carbon nanotubes kana graphene kuti vavandudze simba remakanika uye reactivity yepamusoro pasina kukanganisa conductivity.
Sezvo tekinoroji yemabhatiri ekufambisa ichiwedzera uye ichiwana kushandiswa kwakakura, basa regraphite rinoonekwa rinogona kuwedzera kukosha. Kubva pakuchengetera simba remumba kusvika kuma grid systems e megawatt-scale, kudiwa kwezvinhu zvemagetsi zvakasimba, zvisingagadzirisike zvakanyanya, uye zvinoshanda zvakanyanya kunoramba kuripo.Graphite yakanzwa, nemusanganiswa wayo wakasiyana wechimiro uye mashandiro ayo, inoramba iri dombo guru mukuvandudzwa uku.
Nguva yekutumira: Zvita-29-2025