Tawagar bincike ta Li Mingtao daga makarantar koyar da sinadarai ta jami’ar Xi’an Jiaotong ta yi wani gagarumin nasara wajen yin amfani da batirin lithium-sulfur ta hanyar kerawa da kuma kera wani nau’in cathode mai nau’in kariya na graphene mai fuska biyu. Wannan kayan cathode yana da rayuwa mai tsawo.

2d intercalation G-C3N4/graphene sandwich yana samar da ragamar shark mai yawa tsakanin ingantattun na’urorin lantarki na baturi. Ba wai kawai zai iya toshe motsi na polysulfides tsakanin ingantattun lantarki da mara kyau ta hanyar amfani da jiki da sinadarai ba, amma kuma yana hanzarta yaduwar ions lithium, ta haka yana haɓaka rayuwar baturi sosai.

A cikin ƙasata, haɓakar batirin lithium-sulfur ya ɗan ɗan yi latti, kuma har yanzu yana cikin binciken dakin gwaje-gwaje da ci gaba, tare da ƴan aikace-aikace masu amfani. Tasirin motsi da ya haifar ta hanyar narkar da matsakaicin samfurin lithium sulfide yayin caji da aiwatar da aikin batir lithium sulfur ana ɗaukarsa a matsayin maɓalli mai iyakance aikace-aikacen sa.

Tsohon mataimakin shugaban kasar Qinghai Dr. Li Technician Technology ya taba bayyana cewa, narkar da jirgin ruwa na polysulfide a sararin samaniya, shi ne mafi muhimmanci da kuma wuya matsalar baturi na lithium-sulfur, kuma aikin inganta da alaka da shi har yanzu yana kan matakin farko, amma yana da kwarin gwiwa cewa lithium-sulfur. ana iya amfani da batura azaman batura na biyu. Tare da yawan makamashi mai yawa, yana da fa’idodin haɓaka haɓaka.

Idan aka kwatanta da NCM na ternary na yanzu, ƙayyadadden ƙayyadaddun makamashi na baturin cathode na sulfur ya kai 2600Wh/kg, wanda ya ninka fiye da sau goma na baturin lithium da ake amfani da shi a yanzu. Bugu da kari, ajiyar sulfur yana da yawa kuma ba shi da tsada, wanda zai iya taimakawa wajen rage farashin motocin lantarki da batir lithium ke aiki.

A cikin 2016, Hukumar Ci Gaba da Gyara ta Ƙasa ta ba da shawarar ci gaba a fasahar batirin lithium-sulfur tare da ƙarfin makamashi na 300Wh / kg a cikin “Tsarin Ayyukan Fasaha da Ƙirƙirar Ƙirƙirar (2016-2030)”.

Sabanin haka, bisa ga Matakan Ayyuka don Haɓaka Ci gaban Masana’antar Wutar Lantarki na Kera motoci da Tsare Tsare Tsare Tsare da Tsawon Ci Gaba na Masana’antar Kera Motoci da aka fitar a cikin 2017, rabon injin guda ɗaya zai iya kaiwa sama da 300Wh/kg ta 2020, kuma Matsakaicin injin guda ɗaya zai iya kaiwa 500Wh ta 2025. /kg a sama. Matsakaicin adadin kuzari na batirin lithium-sulfur ya fi 500Wh/kg, don haka ana ɗaukarsa a matsayin jagorar ci gaban ƙarni na gaba na tsarin batirin lithium mai ƙarfi bayan batirin lithium.

Domin warware matsalolin da ake amfani da su wajen amfani da batirin lithium-sulfur, ciki har da tawagar Qian Hanlin na jami’ar kimiyya da fasaha ta kasar Sin, da tawagar Wang Haihui na jami’ar fasaha ta kasar Sin ta Kudu, da Qingdao Makamashi da Kayan Ajiye Makamashi Na Ci gaba. Tawagar binciken fasaha ta Kwalejin Kimiyya ta kasar Sin, da tawagarmu ta jami’ar Xiamen Chemical Nan Fengzheng da tawagar jami’ar Shanghai Jiaotong ta Wang sun samu ci gaba.

A watan Oktoba na shekarar 2018, Farfesa Wang, Yitaiqian da jami’ar kimiyya da fasaha daban-daban ta kasar Sin (Jami’ar Kimiyya da Fasaha) sun gano cewa aikin cibiyar p-band na valence electrons dangane da matakin Fermi wani muhimmin abu ne a cikin li. -S batura Interface electron canja wurin dauki. Masu binciken sun gano cewa cobalt na tushen sulfur mai ɗaukar kayan aiki tare da mafi ƙarancin polarization mai kyau da mafi kyawun aiki yana da damar 417.3 Mahg-1 har ma a 40.0 ° C, wanda yayi daidai da mafi girman ƙarfin halin yanzu na 137.3 kwkg-1. An buga sakamakon binciken a cikin “Joule”, mujallar kasa da kasa na kyawawan kayan makamashi.

Lithium-sulfur baturi ne karfe lithium baturi tabbatacce baturi tare da sulfur a matsayin tabbatacce electrode. Don warware matsalar aminci na Li dendrites samar a cikin karfe tabbatacce lantarki a Jami’ar Shanghai Jiaotong, Wang ta tawagar shirya wani sabon nau’i na lithium baturi electrolyte bayani (ta yin amfani da biyu Lithium fluorosulfonimide ne narkar da a triethyl phosphate da high flash batu fluoroether don samun cikakken electrolyte). . Idan aka kwatanta da na’ura mai mai da hankali sosai, sabon electrolyte yana da ƙarancin farashi da ɗan danko, yana haɓaka kariyar ƙarfe Li electrode, yana iya cire dendrites na Li electrode yadda ya kamata, kuma yana kawar da haɗarin aminci. A lokaci guda, aminci da aikin lantarki na lantarki suna inganta a ƙarƙashin yanayin zafin jiki sama da 60 ° C.

Baya ga binciken kimiyya, kamfanonin batir kuma suna amfani da batir lithium-sulfur a matsayin ɗaya daga cikin ma’ajin fasaha na su, suna buƙatar ci gaban fasaha. Daga cikin wadannan kamfanoni da aka jera, China Nuclear Titanium Dioxide, Tibet Urban Investment, Jinlu Group, Guoxun High-tech, Dream Vision Technology da sauran kamfanoni sun tura ayyukan batir lithium-sulfur.

Ko da yake batir lithium-sulfur suna da wasu matsaloli wajen cimma madaidaicin ƙarfin kuzari, akwai buƙatu masu girma don ɓacin ran wasu aikace-aikacen baturi, kamar motocin jirage marasa matuƙa (UAV), jiragen ruwa na ruwa, da sojan da ke ɗauke da jakunkuna. Don samar da wutar lantarki don wasu dalilai, tun da nauyi ya fi mahimmanci fiye da farashi ko rayuwa, batir lithium-sulfur sun fara amfani da su a aikace. Sabuwar batirin lithium-sulfur da wani kamfani na farko na Biritaniya Oxis Energy ya kirkira zai iya adana kusan ninki biyu na makamashin kowane kilogiram na batirin lithium da ake amfani da su a motocin lantarki a halin yanzu. Koyaya, ba za su iya dadewa ba kuma za su gaza bayan zagayowar caji kusan 100. Makasudin ƙaramin masana’antar matukin jirgi na Oxis shine samar da batura 10,000 zuwa 20,000 a kowace shekara. An ce batirin na kunshe ne cikin wata siririyar jaka mai girman wayar salula. Me yasa muke buƙatar haɓaka sabuntawa da sake amfani da batirin lithium mai ƙarfi da wuri-wuri? Duk da cewa albarkatun lithium na kasata suna matsayi na hudu a duniya, saboda rashin ingancin ma’adinin lithium, wahalar tsarkakewa, da tsadar ta, ana shigo da ma’adinan mai yawa a duk shekara, kuma adadin dogaro da kasashen waje ya wuce kashi 85%. . Bugu da kari, bukatar kasar Sin ta kuma haifar da tashin farashin lithium carbonate mai darajar batir. A cikin ‘yan shekarun nan, farashin ya tashi kusan sau uku, wanda ya kara tsadar farashin saye da kamfanonin kera batir Lithium na kasar Sin. A gefe guda, kawar da batir lithium mai ƙarfi shine “ma’adanin birni” mai daraja. Abun cikin karfen ya fi na tama, lithium, cobalt, nickel da sauran karafa masu daraja. Sake amfani da kayan aiki da sake amfani da su na iya inganta ingantaccen amfani da albarkatu, rage shigo da kayayyaki, da rage waje Dogara da kare tsaron dabarun albarkatun ƙasa. Zhang Tianren ya ce, a bangare guda, ta fuskar hana gurbacewar muhalli da kare muhalli, idan ba a yi watsi da batir lithium da aka zubar yadda ya kamata ba, za su haifar da babbar illa ga muhallin halittu.

Don inganta haɓakawa da sake amfani da batir lithium don sabbin motocin makamashi, kare muhalli, da tabbatar da amincin albarkatun dabarun ƙasa, akwai muhimman batutuwa guda uku: tsarin sake yin amfani da shi mara kyau, fasahar sabuntar da ba ta da ƙarfi, da raunana. tsarin ƙarfafawa. Daban-daban da dama sun gabatar da shawarwari don inganta lafiya da dorewar ci gaban sabuwar masana’antar kera motoci ta kasata.

Haɓaka haɓaka ƙa’idodi da haɓaka ƙa’idodin gudanarwa sune tushen aiwatar da ayyukan da ke da alaƙa. Ya ba da shawarar cewa sassan da abin ya shafa su hanzarta samar da matakan gudanarwa, ka’idojin fasaha da ka’idojin kimantawa don sake amfani da batura da aka yi amfani da su. Ƙarfafa yankunan da ke da fa’idodin masana’antu don tsara sabbin matakan kula da batirin lithium makamashi, dawo da tsare-tsaren sake yin amfani da su da matakan aiwatarwa, kuma ta hanyar matukan jirgi na farko, bincika matakan aiwatar da ƙasa waɗanda suka fi dacewa da gaskiyar masana’antu kuma sun fi aiki.