Iyo lithium ion bhatiri hupenyu hunogona kuwedzerwa kuwedzera hydrogen element?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Портативті электр станциясының жеткізушісі

Vatsvagiri veRaunns Rifo Moore National Laboratory (LLNL) vakawana kuti huwandu hwebhatiri hunogona kuvandudzwa zvakanyanya chero bedzi hydrogen element ichiwedzerwa kumaelectrodes ebhatiri ye lithium-ion, inozowedzera nguva yekushanda uye kukurumidza kutapurirana mabasa. Iyo lithium ion bhatiri imhando yebhatiri rechargeable, uye lithium ion inotamiswa kubva mubhatiri kuenda kune yakanaka electrode panguva yekubuda, uye iyo lithium ion yeiyo yakanaka electrode inodzoserwa kumashure kune yakaipa electrode panguva yekuchaja. Iyo lithium ion bhatiri imhando yebhatiri rechargeable, uye lithium ion inotamiswa kubva mubhatiri kuenda kune yakanaka electrode panguva yekubuda, uye iyo lithium ion yeiyo yakanaka electrode inodzoserwa kumashure kune yakaipa electrode panguva yekuchaja.

Lithium ion mabhatiri ane akati wandei akakosha maitiro, voltage, uye simba density, kuita kweaya maitiro kunozotemerwa nekubatanidzwa kwe lithium ion uye electrode zvinhu. Muchigadziro che electrode, kushanduka kusinganzwisisike mumakemikari uye maumbirwo kunogona kukanganisa zvakanyanya kuti lithium ions yakasungirirwa zvakasimba sei kuhutano hwavo hwakasimba. Kuburikidza nekuyedza uye kuverenga, vagadziri veLivermore National Lab vakawana kuti mubhatiri relithium-ion, iyo hydrogen-yakagadziriswa graphene foam electrode inoratidza huwandu hwepamusoro uye nekukurumidza kutapurirana simba.

"Izvi zvakawanikwa zvinopa kuongororwa kwemhando, iyo inobatsira kugadzira emagetsi emagetsi epamusoro akavakirwa pane graphene zvinhu," LLNL zvinhu zvesainzi Morriswang akadaro. Ndiye zvakare mumwe wevanyori veizvi zvakaburitswa mu Natural Science Report (NatureScientificReports Journal). Gallene zvinhu mukushandiswa kwekutengesa kwesimba rekuchengetedza zvinhu, zvinosanganisira lithium-ion mabhatiri uye supercapacitors, zvichikanganisa zvakanyanya kugona kwayo kugadzira chinhu ichi nemutengo wakaderera.

Iyo inowanzoshandiswa kemikari synthesis nzira inozopedzisira yasiya nhamba yakakura yeatomu yehydrogen, izvo zvakaoma kuziva mhedzisiro ye electrochemical performance yegraphene. Zviyedzo muLivermore Lab vaongorori vakawana kuti iyo hydrogen element inovandudza nemaune tembiricha yekurapwa kwezviyo-yakapfuma graphene, iyo inogona kunyatso kuvandudza chiyero. Mushure mekukanganisa kweiyo hydrogen element uye kukanganisa mugraphene, iyo diki pore inovhurwa, iyo inogona kukurudzira lithium ions nyore kupinda, nekudaro ichivandudza kutapurirana.

Yakawanda cyclicable kugona inogona kupihwa kuburikidza ne lithium ion yakasungirirwa kumucheto mutsva (inowanzo kuomerera kune iyo hydrogen element). "Kunatsiridza kwekuita kwe electrode ibudiriro yakakosha, inogona kuvhura mamwe maapplication epasirese," akadaro postdoctoral muongorori weLivermore Laboratory Materials Science uye munyori akakosha wemapepa ekutsvagisa akadaro. Kuti vashandise kushandiswa kwehydrogenation uye hydrogenation defects mu lithium ion storage properties ye graphene, vatsvakurudzi vakashandisa mamiriro akasiyana-siyana ekupisa kupisa akafumurwa neinosunga hydrogen element, vachitarisa pane electrochemical properties ye 3D graphene nanofoam (GNF).

Yakagadzirwa neyakakanganisika graphene. Vatsvakurudzi vanoshandisa 3D graphite nano foam nokuti ine zvakasiyana-siyana zvinogona kushandiswa, kusanganisira hydrogen storage, catalysis, filtration, insulation, simba rekutora, capacitance desal, supercapacitors uye lithium-ion mabhatiri, nezvimwewo. Hunhu hwegraphene 3D foam isina-adhesive adhesive haigone kuomesesa nekuti iyo yekuwedzera yakanyanya kuomarara, uye nekudaro inogona kushandiswa seyakanakira sarudzo yekutsvaga michina.

"Takaona kuti mushure mekurapwa kwehydrogen element, iyo graphite olee foam electrode ine kufambira mberi kukuru. Nekubatanidzwa kwekuyedza uku, isu tinoteedzera kupindirana kusinganzwisisike uye kufambira mberi pakati pehurema nehydrogen mhinduro. Mukupindura kune mhedzisiro yedzimwe shanduko diki mugraphene chemistry uye morphology, zvinokwanisika kuunza zvinoshamisa mhedzisiro mukuita, "LLNL vaongorori vanewo mumwe munyori wechidzidzo ichi" Brandonwood.

Sekureva kwechidzidzo ichi, iyi inodzorwa hydrogen element kurapwa inogona zvakare kushandiswa mune imwe graphene-based anode zvinhu kuti iwane yakagadziridzwa lithium ion kutapurirana uye kushandiswazve kuchengetedza maapplication.