Chikwata chekutsvagisa chaLi Mingtao kubva kuChikoro cheChemical Engineering cheXi’an Jiaotong University chaita pundutso mukushandiswa kwemabhatiri e-lithium-sarufa nekugadzira nekugadzira zvinhu zvecathode zvine maviri-dimensional graphene inodzivirira. Iyi cathode zvinhu ine hupenyu hurefu hwekutenderera.

2d intercalation G-C3N4/graphene sandwich inoumba multilayer shark net pakati pezvakanaka uye zvisina kunaka electrode yebhatiri. Haikwanisi chete kuvhara kufamba kwe polysulfides pakati pezvakanaka uye zvisina kunaka electrodes kuburikidza nekushandiswa kwepanyama uye kwemakemikari, asiwo kukurumidza kupararira kwe lithium ions, nokudaro kuwedzera zvakanyanya kutenderera hupenyu hwebhatiri.

Munyika yangu, kuvandudzwa kwemabhatiri e-lithium-sarufa kwave kunonoka, uye ichiri murabhoritari yekutsvagisa uye danho rekusimudzira, iine mashoma anoshanda. Iyo shuttle mhedzisiro inokonzerwa nekuparara kweyepakati chigadzirwa lithium sulfide panguva yekuchaja uye yekuburitsa mabhatiri e lithium sulfur inoonekwa sechinhu chakakosha chinomisa kushanda kwayo.

Aimbova mutevedzeri wemutungamiri weQinghai Dr. Li Technician Technology akambotaura kuti polysulfide yakanyungudutswa space shuttle ndiyo inonyanya kukosha uye yakaoma lithiamu-sarufa bhatiri dambudziko, uye inoenderana nekuvandudza basa richiri padanho rekutanga, asi ane tarisiro yekuti lithium-sarufa. mabhatiri anogona kushandiswa sechipiri mabhatiri. Nekuwanda kwesimba remagetsi, ine tarisiro yakakura yebudiriro.

Kana ichienzaniswa neiyo mainstream ternary NCM, iyo theoretical chaiyo simba resarufa cathode bhatiri rakakwira se2600Wh/kg, inodarika kagumi pane yerino shandiswa zvakanyanya lithium bhatiri. Pamusoro pezvo, matura esarufa akawanda uye asingadhure, izvo zvinogona kubatsira kuderedza mutengo wemotokari dzemagetsi dzinofambiswa nebhatiri retimu.

Muna 2016, National Development and Reform Commission yakaronga budiriro mune lithium-sarufa bhatiri tekinoroji ine simba density ye300Wh/kg mu “Energy Technology Revolution uye Innovation Action Plan (2016-2030)”.

Kusiyana neizvi, maererano neMatanho Ekuita Ekusimudzira Kukudziridzwa kweIndasitiri Yemagetsi Emotokari uye Yepakati uye Yenguva Yakareba Yekuvandudza Chirongwa cheIndasitiri yeMotokari yakaburitswa muna 2017, chiyero chemuchina mumwe chete chinogona kusvika kupfuura 300Wh/kg panosvika 2020, uye the single-machine ratio inogona kusvika 500Wh ne2025./kg pamusoro. Iyo theoretical simba density yemabhatiri e-lithium-sarufa yakakura kupfuura 500Wh/kg, saka inoonekwa senzira yekusimudzira yechizvarwa chinotevera chesimba re lithium bhatiri masisitimu mushure me lithium mabhatiri.

Kugadzirisa matambudziko anoshanda mukushandiswa kwemabhatiri e-lithium-sarufa, kusanganisira timu yeQian Hanlin yeYunivhesiti yeSainzi neTekinoroji yeChina, timu yeWang Haihui yeSouth China University of Technology, Qingdao Energy uye Energy Storage Materials Advanced. Tekinoroji Yekutsvagisa Chikwata cheChinese Academy yeSainzi, timu yedu yeXiamen University Chemical Nan Fengzheng uye timu yeShanghai Jiaotong University Wang yekutsvagisa yakafambira mberi.

Muna Gumiguru 2018, Muzvinafundo Wang, Yitaiqian neYunivhesiti yeScience neTekinoroji yakasiyana-siyana yeChina (Yunivhesiti yeSainzi neTekinoroji) vakawana kuti kushanda nesimba kwep-band centre chinzvimbo chevalence maelectrons maererano neFermi level chinhu chakakosha mu li. -S mabhatiri Interface electron transfer reaction. Vatsvakurudzi vakaona kuti cobalt-based sulfur-carrying material ine diki diki yakanaka polarization uye yakanakisa chiyero chekuita ine simba re 417.3 Mahg-1 kunyange pa40.0 ° C, iyo inofanana neiyo yakanyanya simba density ye137.3 kwkg-1. Mhedzisiro yetsvagiridzo yakabudiswa mu “Joule”, bhuku repasi rose rezvakanakisa simba zvekushandisa.

Lithium-sarufa bhatiri isimbi lithium bhatiri positive bhatiri system ine sulfur seyakanaka electrode. Kugadzirisa dambudziko rekuchengetedza reLi dendrites rinogadzirwa musimbi yakanaka electrode paShanghai Jiaotong University, timu yaWang yakagadzirira rudzi rutsva rwe lithium bhatiri electrolyte mhinduro (ichishandisa kaviri Lithium fluorosulfonimide inonyungudika mu triethyl phosphate uye yakakwira flash point fluoroether kuwana saturated electrolyte) . Kuenzaniswa ne-high-concentration electrolyte, iyo itsva electrolyte ine mari shoma uye yakaderera viscosity, inowedzera kuchengetedzwa kwesimbi Li electrode, inogona kunyatsobvisa dendrites yeLi electrode, uye inobvisa njodzi dzinogona kuitika. Panguva imwecheteyo, kuchengetedza uye kushanda kwe electrochemical kunovandudzwa pasi pemamiriro ekushisa akakwirira kupfuura 60 ° C.

Pamusoro pekutsvagisa kwesainzi, makambani ebhatiri anoshandisawo mabhatiri e-lithium-sarufa seimwe yenzvimbo dzavo dzekuchengetera tekinoroji, achishingairira budiriro yetekinoroji. Pakati pemakambani akanyorwa aya, China Nuclear Titanium Dioxide, Tibet Urban Investment, Jinlu Group, Guoxun High-tech, Dream Vision Technology nemamwe makambani akaisa mapurojekiti ebhatiri retimu-sarufa.

Kunyangwe mabhatiri e-lithium-sarufa aine mamwe matambudziko mukuita kuti awane simba resimba rakakwana, pane zvinodikanwa zvakakwirira zvekuonda kwemamwe mabhatiri ekushandisa, senge unmanned aerial vehicles (UAV), submarines, nemabhegi anotakura masoja. Kune magetsi ezvimwe zvinangwa, sezvo uremu hwakakosha kupfuura mutengo kana hupenyu, lithium-sarufa mabhatiri atanga kuiswa mukushandisa. Iyo nyowani lithium-sarufa bhatiri yakagadziridzwa neBritish kutanga-up kambani Oxis Energy inogona kuchengeta kanenge kaviri simba pakirogiramu ye lithium mabhatiri anoshandiswa mumotokari dzemagetsi. Nekudaro, ivo havagone kugara kwenguva refu uye vanozokundikana mushure meanenge zana ekuchaja-kuburitsa matenderera. Chinangwa chechirimwa chidiki cheOxis ndechekugadzira mabhatiri zviuru gumi kusvika makumi maviri pagore. Zvinonzi bhatiri rakazara mubhegi rakatetepa rakaenzana nenharembozha. Sei isu tichida kusimudzira kuvandudzwa uye kudzokororwa kwesimba lithium mabhatiri nekukurumidza sezvinobvira? Kunyangwe nyika yangu zviwanikwa zvelithium zviri pachinzvimbo chechina pasirese, nekuda kwegiredhi rakashata relithium ore, kuomerwa kwekucheneswa, uye kudhura kwakanyanya, huwandu hukuru hwelithium ore hunotengeswa kunze kwenyika gore rega, uye dhigirii rekutsamira kune dzimwe nyika rinopfuura 100% . Pamusoro pezvo, kudiwa kweChinese kwakafambisawo mutengo webhatiri-giredhi lithium carbonate uchikwira. Mumakore achangopfuura, mutengo wakakwira kanenge katatu, izvo zvakawedzera zvakanyanya mutengo wekutenga weChinese lithium bhatiri vanogadzira. Kune rumwe rutivi, kubviswa kwesimba lithium mabhatiri inokosha “mugodhi weguta”. Iyo simbi yemukati yakakwira zvakanyanya kupfuura yeore, lithium, cobalt, nickel uye mamwe masimbi anokosha. Kudzokorodza uye kudzokorodza zvakare kunogona kuvandudza zviwanikwa zvekushandisa zvakanaka, kuderedza zvinotengeswa kunze kwenyika, uye kuderedza zvekunze Zvitsamira nekuchengetedza kuchengetedzeka kwehurongwa hwezviwanikwa zvenyika. Zhang Tianren akati, kune rumwe rutivi, kubva pakuona kwekudzivirira kusvibiswa nekuchengetedza nharaunda, kana akaraswa mabhatiri e-lithium asina kuraswa zvakanaka, anozokonzera kukuvadza kukuru kune nharaunda.

Kuti tikudziridze zvirinani kudzoreredza uye kushandiswazve kwemabhatiri e-lithium kumotokari dzesimba idzva, kuchengetedza nharaunda, uye kuona kuchengetedzwa kwezviwanikwa zvepasirese, pane zvinhu zvitatu zvakakosha: iyo isina kukwana yekudzokorodza system, iyo immature regeneration tekinoroji, uye isina kusimba. incentive mechanism. Zviitiko zvakati wandei zvakaisa pamberi mazano ekusimudzira hutano uye kusimudzira budiriro yenyika yangu itsva magetsi emotokari indasitiri.

Kumhanyisa kukwidziridzwa kwemazinga uye kubatanidza manejimendi zviyero ndiyo hwaro hwekuita basa rakabatana. Akataura kuti madhipatimendi akakodzera akurumidze kuumbwa kwezviyero zvekutungamira, tekinoroji zviyero uye miyero yekuongorora yekudzokorodza uye kushandiswazve kwemabhatiri akashandiswa. Kurudzirai matunhu ane mabhenefiti akanakira kugadzira simba idzva relithium bhatiri kutarisa, kudzoreredza, uye kudzokorodza zvirongwa nematanho ekuita, uye kuburikidza nevatyairi vekutanga, ongorora matanho ekuita enyika anowirirana nezvinoitika mumaindasitiri uye anoshanda zvakanyanya.