Betri e bohareng e ka etsa hore koloi ea motlakase e tjhaje nako metsotso e seng mekae feela

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Umhlinzeki Wesiteshi Samandla Esiphathekayo

Bapisa li-supercapacitor le libeteri, joalo ka ha ho bonts&39;itsoe betereng e bohareng e nang le botenya ba li-electrode tse tharo tse fapaneng, matla a mangata a phahameng, le matla a phahameng a matla. Mohloli: Mokhatlo oa American Chemistry o hokae, o tšoana le katleho ea theknoloji ea betri, empa ha se betri. Litlhaloso tsa likarolo tsa Nanotekinstruments, Inc.

le lithuso tsa eona, Angstronmaterials, Inc. ea Ohton, e ntlafalitsoeng Tlhaloso e Ncha, e sebelisetsoang ho rala lisebelisoa tsa polokelo ea matla, ho itšetlehile ka shuttle e potlakileng ea palo e kholo ea li-ion tsa lithium ka electrode, electrode ena e na le sebaka se seholo sa graphene. Sesebelisoa sena sa polokelo ea matla se ka ipaka se le molemo haholo bakeng sa likoloi tsa motlakase, tse ka fokotsang nako ea ho tjhaja, e khutsufalitsoeng ho tloha ka tlase ho motsotso ho tloha lihora.

Lisebelisoa tse ling li ka kenyelletsa polokelo ea matla e ka nchafatsoang (mohlala, matla a ho boloka letsatsi le matla a moea) le marang-rang a bohlale. Bafuputsi ba boletse hore sesebelisoa sena se secha ke betri ea phapanyetsano ea lithium ion bakeng sa ts&39;ebetso ea graphene holim&39;a metsi, kapa ho feta, betri e tsamaeang ka holim&39;a metsi (SMCS: Surface-Mediatedcells). Le hoja lisebelisoa tsa morao-rao li sebelisa lisebelisoa le mehaho e sa buloang, li se li ka feta libeteri tsa lithium-ion le li-supercapacitor.

Sesebelisoa sena se secha se ka fana ka 100 kilowatts ka kilowatt ea betri, makhetlo a 100 ho feta libeteri tsa khoebo tsa lithium-ion, makhetlo a 10 ho feta supercapacitor. Ha boima ba matla bo phahame, lebelo la phetisetso ea matla le ka potlako (le ka fella ka lebelo la ho tjhaja ka potlako). Ho phaella moo, betri ena e ncha e ka boloka matla a matla a 160 watts ka kilogram ea betri, e ka bapisoang le betri ea lithium-ion e rekisoang, makhetlo a 30 ho feta supercapacitor ea setso.

Ha matla a mangata a matla, matla a mangata a ka bolokoa, matla a mangata a bolokiloe (ka sebaka se selelele sa ho khanna likoloi tsa motlakase). Haeba ho na le boima ba thepa e tšoanang, betri ea hona joale e sebelisoang ka holim&39;a metsi le libeteri tsa lithium-ion li ka sebelisoa bakeng sa likoloi tsa motlakase, &39;me mothehi oa Nano Instrument le Angerstron Materials Company Joint mothehi Jiang Bauz (Borz.jang) Ho boleloa hore betri ea rona e kentsoeng ka holim&39;a metsi e tšoana le betri ea hona joale ea lithium-ion, e ka eketsa matla a eona le ho ntlafatsa matla a eona.

Leha ho le joalo, ha e le hantle, libeteri tse tsamaeang ka holimo li ka lefisoa ka metsotso e seng mekae (e ka &39;na ea se ke ea feta motsotso o le mong), ho e-na le lihora tse ngata, feela joaloka betri ea lithium-ion e sebelisoang likoloing tsa motlakase. Jiang Bauldz le molekane oa hae Nanotechnology Instrument Co., Ltd.

le Angersmia Material Company e hatisitse thuto ena, e leng thuto ea lisebelisoa tsa polokelo ea matla ea moloko o latelang, e hatisitsoeng morao tjena "Nano Express" (Nanoletters). Likhamphani tsena ka bobeli li sebetsa ka thata khoebong ea li-nanomaterials, Angerstrong ke moetsi o moholo ka ho fetisisa lefatšeng oa nano-granite (NGPS: Nanographeneplatelets). Feela joalokaha bafuputsi ba hlalosa lipatlisisong tsa bona, ho na le matla le mefokolo ea bona ho boloka matla, libeteri le li-supercapacitor.

Le hoja matla a matla a betri ea lithium ion (120-150 watt / kg) a phahame haholo ho feta supercapacitor (5 watt / kg), betri ena e na le matla a fokolang a matla (1 kW / kg betri) , Bapisa 10 kW / kg betri). Lihlopha tse ngata tsa lipatlisiso li entse boiteko ba ho eketsa matla a matla a betri ea lithium-ion, ho ntlafatsa matla a matla a supercapacitor, empa libaka tsena tse peli li ntse li e-na le mathata a maholo. Hobane ho fanoe ka moralo o mocha, o ka sebelisoa bakeng sa lisebelisoa tsa polokelo ea matla, kahoo betere ena e ka holimo-limo e lumella bafuputsi ho qoba mathata ana.

Ntlafatsa sesebelisoa sena se secha sa polokelo ea matla, ho fokotsa lekhalo lipakeng tsa ts&39;ebetso ea betri ea lithium ion le supercapacitor, mme Jiang Bauz o boletse. Habohlokoa le ho feta, moralo ona o mocha oa ho etsa lisebelisoa tsa polokelo ea matla, o nolofalletsang bafuputsi ho fumana matla a mangata a matla, empa hape le matla a phahameng a matla, ntle le ho itela. Electrode ea betri e kentsoeng ka holim&39;a metsi e na le sebaka se seholo sa holimo, e le hore palo e kholo ea li-ion e potlakele ho koala, e tlisa nako ea ho tjhaja kapele.

Mohloli: Senotlolo sa ts&39;ebetso ea betri e pharalletseng ea Amerika Chemistry, ke cathode le anode e na le bokaholimo bo boholo ba graphene. Ha ba etsa libeteri, bafuputsi ba kenya tšepe ea lithium (ka mokhoa oa likaroloana kapa foil ea tšepe) ho anode. Ka potoloho ea pele ea ho tsoa, ​​lithium e ionized, palo ea lithium ion e tlisitsoe ho feta betri ea lithium ion.

Ha betri e sebelisoa, li-ion tsena li fallela ho cathode ka electrolyte ea mokelikeli, ka har&39;a li-pores tsa cathode ho fihla sebakeng se seholo sa graphene ka har&39;a cathode. Nakong ea ts&39;ebetso ea ho tjhaja, palo e kholo ea lithium ion flux e tloha ka potlako ho tloha ho cathode ho ea ho anode. E kholo haholo eleketrode holim&39;a sebaka, e le hore palo e khōlō ea ions ka potlako shuttle, matla a phahameng le segokanyipalo matla.

Bafuputsi ba hlalositse hore bokaholimo ba elektrode e porous (ho e-na le ho e-na le electrode e thibelang, joaloka betri e ka betri), u se ke ua ja nako ea ho kenya ts&39;ebetso. Nakong ea ts&39;ebetso ena, li-ion tsa lithium li tlameha ho kenngoa pakeng tsa li-electrode, e leng nako ea bohlokoa ea ho tjhaja betri. Phuputsong ena, le hoja bafuputsi ba sebelisitse palo e kholo ea mefuta e fapaneng ea graphite, mefuta e fapaneng ea graphene (oxidized, e fokotsehileng lera le le leng le le leng le le leng la graphene) e ne e lokiselitsoe, empa lisebelisoa tsena le litlhophiso li ile tsa hlahlojoa ka ho eketsehileng ho ntlafatsa sesebelisoa sena.

Ka lehlakoreng le leng, bafuputsi ba rera ho tsoela pele ho ithuta bophelo ba potoloho ea betri ena. Ho fihlela joale, ba fumana hore lisebelisoa tsena li ka boloka matla a 95% ka mor&39;a lipotoloho tsa 1000, esita le ka mor&39;a lipotoloho tsa 2000, ho ntse ho se na pontšo ea dendrite. Bafuputsi ba boetse ba rera ho buisana, mekhoa e fapaneng ea ho boloka lithium e amanang le ts&39;ebetso ea lisebelisoa.

Re hakanya hore khoebo ea thekenoloji ea betri e tsamaeang ka holimo e ke ke ea ba le litšitiso tse kholo, mme Jiang Bauz o boletse. Leha graphene ea hajoale e rekisoa ka theko e phahameng, Khamphani ea Angerstron Materials e ntse e holisa ka mafolofolo matla a tlhahiso ea graphene. Ho lebeletsoe hore lilemong tse latelang tsa 1-3, litšenyehelo tsa tlhahiso ea graphite li tla fokotseha haholo.