I-Lonnmeter Group, umkhiqizi ohamba phambili kanye nomnikezeli wamamitha aphakathi komugqa wokuminyana, inikele amashumi eminyaka ekuhlinzekeni ngezixazululo zochwepheshe kumakhasimende emhlabeni wonke. Lezi zixazululo zisize izimboni eziningi zezimboni, izimboni zikagesi, kanye namabhizinisi e-metallurgical ukunciphisa izindleko kanye nokwenza ngcono ukusebenza kahle.

Iqhaza Elibalulekile Lokuxuba Udaka

Ukusebenza kwe-hydrogen fuel cell MEAs kuncike kakhulu ekufaneni nasekuzinzeni kwama-catalyst slurries. Isibonelo, ama-anode slurries adinga i-15% ye-Pt-C catalyst ehlakazwe ngokufanayo ku-solvent exubile engu-40% yamanzi e-deionized, 40% methanol, kanye nesisombululo se-ionomer esingu-5%; ama-cathode slurries adinga isilinganiso esiphezulu se-catalyst (20%) kanye ne-binder (10%). Lesi silinganiso esinembayo asithinti nje kuphela izici ezibonakalayo ze-slurry kodwa futhi sinomthelela ngokuqondile ekusabalaleni kwezindawo ezisebenzayo ze-catalytic kanye nokusebenza kwe-proton.

Ukulawula ukuminyana okungafanele kungase kubangele i-catalyst agglomeration noma i-sedimentation, kubangele ukushuba okungalingani kwe-catalyst eboshwe kanye nokusebenza kwebhethri sekukonke. Isibonelo, ukuminyana okuphezulu kungase kubonise i-catalyst eyeqile noma ukuhwamuka kwe-solvent, ukwandisa i-slurry viscosity futhi kubangele "ikhasi lewolintshi" noma "i-pinhole" ukukhubazeka ngesikhathi sokumboza; ukuminyana okuphansi kungase kubonise i-catalyst enganele, yehluleke ukunikeza amasayithi okusabela anele kanye nokunciphisa ukusebenza kahle kwebhethri.

Imikhawulo yokulawulwa kokuqina kwe-Slurry Density

Ukuxutshwa kwe-slurry kwe-catalyst yendabuko kuncike esikalini mathupha kanye nokuhlola okungaxhunyiwe ku-inthanethi kokuyisisekelo. Le ndlela isala ngemuva kakhulu kwenqubo yesikhathi sangempela—ukuthola imiphumela yokuhlolwa kokuthatha amasampula ngokuvamile kuthatha imizuzu eyi-15–30, ngaleso sikhathi udaka kungenzeka ukuthi selungene enqubweni elandelayo, okuholela ekuchithweni kabusha okukhulu.

Imisebenzi eyenziwa mathupha idonsa kanzima ukuthola i-nanoscale catalyst particle agglomeration. Ukwengeza, izici ezifana nokushintsha kwezinga lokushisa nokuhwamuka kwe-solvent kubangela ukuguquguquka okuguquguqukayo kokuminyana kuma-slurries, izinqubo zendabuko ezingakwazi ukunxephezela ngesikhathi sangempela, okuqhubekisela phambili izingozi zokungaqini kwekhwalithi.

Isimiso Sokusebenza kanye Nezinzuzo Zobuchwepheshe

Ukuze kubhekwane nalezi zinselele, onjiniyela be-Lonnmeter bathuthukise amamitha okuminyana asemgqeni asuselwa kumgomo wamandla we-Coriolis, okala imvamisa yokudlidliza okuwuketshezi ukuze bathole idatha yokuminyana kwesikhathi sangempela ngokunemba kufika ku-±0.001 g/cm³. Ekuxubeni okunodaka kwe-hydrogen fuel cell, lawa madivayisi okuqapha anembe kakhulu angafakwa lapho kuphuma khona amathangi axutshwayo noma amapayipi omjikelezo ukuze aqhubeke nokuqoqa idatha yokuminyana nezinga lokushisa, ngama-algorithms esinxephezelo asusa umthelela wezinga lokushisa ekuminyana.

Ngale kwamamitha we-Coriolis density, i-Lonnmeter iphinde yasungula amanye amamitha okuminyana asemgqeni afana nokulungisa amamitha okuminyana kwemfoloko namamitha wokuminyana kwe-ultrasonic ukuze inikeze izinzwa ezihlakaniphile zokuqapha ukuminyana kwezimo zokusebenza ezihlukene. Lapho ithola ukuthi ukuminyana kwe-cathode slurry kudlula inani eliqondiwe, isistimu ibala ngokuzenzakalelayo ukuchezuka bese yengeza inani elifanele le-solvent ngepompo yokukala; uma ukuminyana kuphansi kakhulu, kuyengezwa utshwala obudala obuhlakaziwe. Lokhu kulawulwa kwe-loop ashukumisayo akulungisi nje kuphela ukuchezuka kwefomula kodwa futhi kubikezela izinkinga ezingaba khona ngokuhlaziywa kwedatha okungokomlando. Uma ukushintshashintsha kokuminyana kudlula imikhawulo, isistimu icupha ama-alamu ukuze azise okungahle kube khona ukuhlakazeka okungafanani noma ukuhlukaniswa kwesigaba, ukugwema izingozi zekhwalithi yenqwaba ngokuqhubekayo.