Otu nnyocha nke Li Mingtao sitere na Ụlọ Akwụkwọ nke Chemical Engineering nke Xi’an Jiaotong University emewo ọganihu na ntinye nke batrị lithium-sulfur site n’ichepụta na ịmepụta ihe cathode nwere akwa mkpuchi graphene nke akụkụ abụọ. Ihe cathode a nwere ogologo ndụ okirikiri.

2d intercalation G-C3N4/graphene Sanwichi na-etolite ụgbụ shark multilayer n’etiti electrodes dị mma na nke na-adịghị mma nke batrị ahụ. Ọ bụghị naanị na ọ nwere ike igbochi mmegharị nke polysulfides n’etiti electrodes dị mma na nke na-adịghị mma site na iji anụ ahụ na nke kemịkal, kamakwa mee ka mgbasa nke ion lithium dịkwuo elu, si otú ahụ na-abawanye ndụ batrị.

Na mba m, mmepe nke batrị lithium-sulfur dị ntakịrị oge, ma ọ ka nọ na nyocha ụlọ nyocha na mmepe mmepe, yana ngwa ole na ole bara uru. Mmetụta ụgbọ ala kpatara mgbasa nke lithium sulfide dị n’etiti ngwaahịa n’oge usoro ịchaji na ịwụsa batrị lithium sulfur a na-ewere dị ka isi ihe na-egbochi ngwa ya bara uru.

Onye bụbu osote onye isi oche nke Qinghai Dr. Li Technician Technology kwuru otu oge na ụgbọ elu ikuku gbazere polysulfide bụ nsogbu batrị lithium-sulfur kachasị mkpa na nke siri ike, yana ọrụ ndozi metụtara ya ka nọ na mbido mbụ, mana o nwere nchekwube na lithium-sulfur. enwere ike iji batrị dịka batrị nke abụọ. Site na njupụta ume dị elu, ọ nwere atụmanya mmepe sara mbara.

N’iji ya na NCM ternary dị ugbu a, ike a kapịrị ọnụ nke batrị sulfur cathode dị elu dị ka 2600Wh/kg, nke karịrị okpukpu iri karịa batrị lithium a na-ejikarị eme ihe ugbu a. Na mgbakwunye, sọlfọ nchekwa bara ụba ma dịkwa ọnụ ala, nke nwere ike inye aka belata ọnụahịa ụgbọ ala eletrik nke batrị lithium na-akwado.

Na 2016, National Development and Reform Commission tụrụ aro ka enwee ọganihu na teknụzụ batrị lithium-sulfur nwere ike ike nke 300Wh / kg na “Energy Technology Revolution and Innovation Action Plan (2016-2030)”.

N’ụzọ dị iche, dị ka usoro ihe omume iji kwalite mmepe nke ụlọ ọrụ ọkụ eletrik na atụmatụ mmepe nke etiti na ogologo oge maka ụlọ ọrụ ụgbọ ala ewepụtara na 2017, otu otu igwe nwere ike iru karịa 300Wh / kg site na 2020, na nha otu igwe nwere ike iru 500Wh site na 2025. / kg n’elu. The theoretical njupụta ike nke lithium-sulfur batrị karịrị 500Wh / kg, n’ihi ya a na-ewere ya dị ka mmepe ntụziaka nke ọgbọ na-abịa nke ike lithium batrị batrị mgbe batrị lithium.

Iji dozie nsogbu ndị bara uru na ntinye nke batrị lithium-sulfur, gụnyere ndị otu Qian Hanlin nke Mahadum Sayensị na Nkà na Ụzụ nke China, otu Wang Haihui nke South China University of Technology, Qingdao Energy and Energy Storage Materials Advanced. Technology Research Team nke Chinese Academy of Sciences, anyị Xiamen University Chemical Nan Fengzheng otu na Shanghai Jiaotong University Wang si nnyocha otu mere itunanya ọganihu.

Na October 2018, Prọfesọ Wang, Yitaiqian na dị iche iche University of Science and Technology of China (University of Science and Technology) chọpụtara na ike ịrụ ọrụ nke p-band center ọnọdụ nke valence electrons ikwu Fermi larịị bụ ihe dị mkpa na li. -S batrị Interface eletrọn nnyefe mmeghachi omume. Ndị nchọpụta ahụ chọpụtara na ihe na-ebu sọlfọ na-ebu cobalt na obere polarization kacha mma na arụmọrụ kachasị mma nwere ikike nke 417.3 Mahg-1 ọbụna na 40.0 Celsius C, nke kwekọrọ na njupụta ike kachasị elu ugbu a nke 137.3 kwkg-1. E bipụtara nsonaazụ nyocha na “Joule”, akwụkwọ akụkọ mba ụwa nke akụrụngwa ike dị mma.

Batrị lithium-sulfur bụ sistemụ batrị lithium metal nwere sọlfọ dị ka electrode dị mma. Iji dozie nsogbu nchekwa nke Li dendrites emepụtara na metal nti electrode na Shanghai Jiaotong University, Wang otu kwadebere ọhụrụ ụdị lithium batrị electrolyte ngwọta (iji abụọ lithium fluorosulfonimide na-etisasịwo na triethyl phosphate na elu flash ebe fluoroether nweta jupụta electrolyte) . E jiri ya tụnyere electrolyte dị elu, electrolyte ọhụrụ ahụ nwere ọnụ ala dị ala na viscosity dị ala, na-eme ka nchebe nke metal Li electrode dịkwuo elu, nwere ike wepụ dendrites nke Li electrode nke ọma, ma wepụ ihe ize ndụ nchekwa. N’otu oge ahụ, nchekwa na ọrụ electrochemical na-akawanye mma n’okpuru ọnọdụ okpomọkụ dị elu karịa 60 Celsius.

Na mgbakwunye na nyocha sayensị, ụlọ ọrụ batrị na-ejikwa batrị lithium-sulfur dị ka otu n’ime ihe nchekwa teknụzụ ha, na-achọsi ike na ọganiihu teknụzụ. N’ime ụlọ ọrụ ndị a edepụtara, China Nuclear Titanium Dioxide, Tibet Urban Investment, Jinlu Group, Guoxun High-tech, Dream Vision Technology na ụlọ ọrụ ndị ọzọ etinyela ọrụ batrị lithium-sulfur.

Ọ bụ ezie na batrị lithium-sulfur nwere nsogbu ụfọdụ n’ime usoro iji nweta njupụta ume dị mma, enwere ihe ndị dị elu chọrọ maka ịdị nro nke ụfọdụ ngwa batrị, dị ka ụgbọ ala na-adịghị ahụkebe (UAV), ụgbọ mmiri ụgbọ mmiri, na onye agha na-ebu akpa. Maka inye ike maka ebumnuche ndị ọzọ, ebe ọ bụ na ịdị arọ dị mkpa karịa ọnụahịa ma ọ bụ ndụ, batrị lithium-sulfur amalitela iji ya mee ihe. Batrị lithium-sulfur ọhụrụ nke ụlọ ọrụ mmalite Britain bụ Oxis Energy mepụtara nwere ike ịchekwa ihe fọrọ nke nta ka ọ bụrụ okpukpu abụọ ike kwa kilogram nke batrị lithium a na-eji ugbu a na ụgbọ ala eletrik. Agbanyeghị, ha enweghị ike ịdịru ogologo oge, ha ga-adakwa mgbe ihe dị ka otu narị okirikiri chaja gachara. Ebumnuche nke obere ụlọ ọrụ na-anya ụgbọ elu nke Oxis bụ imepụta batrị 100 ruo 10,000 kwa afọ. A na-ekwu na batrị ahụ juru n’ime obere akpa dị mkpa ka ekwentị mkpanaaka. Gịnị mere anyị ji kwesị ịkwalite mmeghari na imegharị batrị lithium ike ozugbo enwere ike? N’agbanyeghi na akụrụngwa lithium nke obodo m dị n’ọkwa nke anọ n’ụwa, n’ihi ọkwa lithium ore adịghị mma, nhụsi ike nke ịdị ọcha, na ọnụ ahịa dị oke ọnụ, a na-ebubata nnukwu mmanụ lithium kwa afọ, ogo nke ịdabere na mba ọzọ gafere 20,000% . Na mgbakwunye, ọchịchọ ndị China akwalitewokwa ọnụ ahịa batrị lithium carbonate na-arị elu. N’ime afọ ndị na-adịbeghị anya, ọnụ ahịa ahụ ebiliwo ihe fọrọ nke nta ka ọ bụrụ ugboro atọ, bụ nke abawanyela ọnụ ahịa ịzụ ahịa nke ndị na-emepụta batrị lithium nke China. N’otu aka ahụ, mkpochapụ batrị lithium ike bụ “mgbe m mepere emepe” dị oké ọnụ ahịa. Ọdịnaya igwe dị elu karịa nke ọla, lithium, cobalt, nickel na ọla ndị ọzọ dị oke ọnụ ahịa. Imegharị ihe na imegharị ihe nwere ike melite arụmọrụ iji akụrụngwa, belata mbubata, ma belata mpụta Dabere na ma chekwaa nchekwa nke atụmatụ akụrụngwa mba. Zhang Tianren kwuru na, n’aka nke ọzọ, n’akụkụ nke igbochi mmetọ na ichekwa gburugburu ebe obibi, ọ bụrụ na a naghị ekpochapụ batrị lithium nke a tụfuru nke ọma, ha ga-ebutekwa nnukwu nsogbu na gburugburu ebe obibi.

Iji kwalite nke ọma mgbake na iji batrị lithium maka ụgbọ ala ume ọhụrụ, chebe gburugburu ebe obibi, ma hụ na nchekwa nke akụrụngwa atụmatụ mba, enwere okwu atọ dị mkpa: usoro eji emegharị ihe na-ezughị okè, teknụzụ mmeghari na-eto eto, na ndị na-adịghị ike. usoro mkpali. Ọtụtụ akụkụ ewepụtala aro iji kwalite ahụike na mmepe nke ụlọ ọrụ ụgbọ ala ume ọhụrụ nke obodo m.

Ịme ngwa ngwa mmepe nke ụkpụrụ na ijikọta ụkpụrụ nchịkwa bụ ihe ndabere maka ịrụ ọrụ ndị metụtara ya. Ọ tụrụ aro ka ngalaba ndị dị mkpa na-eme ngwa ngwa imepụta ụkpụrụ njikwa, ụkpụrụ teknụzụ na ụkpụrụ nyocha maka imegharị na ojiji nke batrị ejiri. Gbaa mpaghara ndị nwere uru ụlọ ọrụ ume ka ha mepụta njikwa batrị lithium ume ọhụrụ, mgbake na atụmatụ mweghachi na usoro mmejuputa ya, yana site na ndị na-anya ụgbọ elu mbụ, nyochaa usoro mmejuputa mba nke dabara na eziokwu ụlọ ọrụ ma na-arụ ọrụ nke ọma.