Sisebenzisa iikuki ukuphucula amava akho.Ngokuqhubeka nokukhangela le ndawo, uyavumelana nokusebenzisa kwethu iikuki.Iinkcukacha ezithe xaxe.
Njengoko i-industry yemoto yombane (EV) ikhula, ngokunjalo uphando kunye nophuhliso lweebhetri ze-lithium-ion eziphezulu ezibanika amandla.Uphando kunye nokwandiswa kobuchwepheshe bokutshaja nokukhupha iitekhnoloji, kunye nokwandisa ubomi bebhetri, yimisebenzi ephambili ekuphuhlisweni kwayo.
Izinto ezininzi, ezinje ngeempawu zokujonga i-electrode-electrolyte, i-lithium ion diffusion, kunye ne-electrode porosity, zinokunceda ukoyisa ezi ngxaki kwaye zifezekise ukutshaja okukhawulezayo kunye nobomi obandisiweyo.
Kwiminyaka embalwa edlulileyo, i-nanomaterials ezimbini-dimensional (2D) (izakhiwo zeshiti ezinobungqimba bee-nanometers ezimbalwa) ziye zavela njengezinto ezinokubakho ze-anode kwiibhetri ze-lithium-ion.Ezi nanosheets zinendawo ephezulu esebenzayo yoxinaniso kunye ne-aspect ratio ephezulu, enegalelo kwintlawulo ekhawulezileyo kunye neempawu ezibalaseleyo zokukhwela ibhayisekile.
Ngokukodwa, i-nanomaterials enamacala amabini asekelwe kwi-transition metal diborides (TDM) yatsala ingqalelo yoluntu lwezenzululwazi.Ndiyabulela kwiindiza ze-honeycomb ze-athomu ze-boron kunye neentsimbi zenguqu ezininzi, ii-TMD zibonisa isantya esiphezulu kunye nokuzinza kwexesha elide lemijikelezo yokugcina i-lithium ion.
Okwangoku, iqela lophando elikhokelwa nguProf. Noriyoshi Matsumi waseJapan Advanced Institute of Science and Technology (JAIST) kunye noProf. Kabir Jasuja we-Indian Institute of Technology (IIT) uGandhinagar usebenza ukuqhubela phambili ukuphonononga ukuba nokwenzeka kokugcinwa kwe-TMD.
Iqela liye laqhuba isifundo sokuqala somqhubi wokugcinwa kwe-titanium diboride (TiB2) i-hierarchical nanosheets (THNS) njengezinto ze-anode kwiibhetri ze-lithium-ion.Iqela laliquka uRajashekar Badam, owayenguMhlohli oMkhulu we-JAIST, u-Koichi Higashimin, iNgcali yezobuGcisa ye-JAIST, u-Akash Varma, owayengumfundi ophumelele i-JAIST, kunye noDkt Asha Lisa James, umfundi we-IIT Gandhinagar.
Iinkcukacha zophando lwabo zipapashwe kwi-ACS Applied Nano Materials kwaye ziya kufumaneka kwi-intanethi ngoSeptemba 19, 2022.
I-TGNS ifunyenwe nge-oxidation ye-TiB2 powder kunye ne-hydrogen peroxide elandelwa yi-centrifugation kunye ne-lyophilization yesisombululo.
Yintoni eyenza umsebenzi wethu ugqame kukunyuka kweendlela eziphuhliswe ukudibanisa ezi nanosheets zeTiB2.Ukuguqula nayiphi na i-nanomaterial kwitekhnoloji ebonakalayo, i-scalability yinto ethintelayo.Indlela yethu yokwenziwa ifuna kuphela ukuphazamiseka kwaye ayifuni zixhobo ziphucukileyo.Oku kubangelwa ukutshatyalaliswa kunye nokuziphatha kwe-recrystallization ye-TiB2, efunyenwe ngengozi eyenza lo msebenzi ube yibhuloho ethembisayo ukusuka kwibhulophu ukuya kwintsimi.
Emva koko, abaphandi bayila i-anode ye-lithium-ion isiqingatha seseli usebenzisa i-THNS njengesixhobo esisebenzayo se-anode kwaye baphanda iipropathi zokugcinwa kwentlawulo ye-anode esekwe kwi-THNS.
Abaphandi bafunde ukuba i-anode esekelwe kwi-THNS inomthamo ophezulu wokukhupha we-380 mAh / g kuxinzelelo lwangoku lwe-0.025 A / g kuphela.Ukongezelela, babone umthamo wokukhutshwa kwe-174mAh / g kwi-high density yangoku ye-1A / g, ukugcinwa kwamandla e-89.7%, kunye nexesha lokuhlawuliswa kwemizuzu eyi-10 emva kwemijikelezo ye-1000.
Ukongeza, i-lithium-ion anodes esekwe kwi-THNS inokumelana nemisinga ephezulu kakhulu, ukusuka malunga ne-15 ukuya kwi-20 A / g, ibonelela ngokutshaja okukhawulezayo malunga nemizuzwana eyi-9-14.Kwimisinga ephezulu, ukugcinwa kwamandla kudlula i-80% emva kwemijikelezo ye-10,000.
Iziphumo zolu phononongo zibonisa ukuba i-2D TiB2 nanosheets ngabaviwa abafanelekileyo ukutshaja ngokukhawuleza ubomi obude iibhetri ze-lithium-ion.Bakwaqaqambisa izibonelelo ze-nanoscale bulk materials ezifana ne-TiB2 kwiipropathi ezifanelekileyo ezibandakanya isantya esiphezulu sesantya, ukugcinwa kwentlawulo yepseudocapacitive kunye nokusebenza okugqwesileyo kwebhayisikile.
Le teknoloji yokutshaja ngokukhawuleza inokukhawulezisa ukuthandwa kwezithuthi zombane kwaye inciphise kakhulu ixesha lokulinda lokutshaja izixhobo ezahlukeneyo zombane.Siyathemba ukuba iziphumo zethu ziya kukhuthaza uphando olongezelelweyo kule ndawo, ekugqibeleni inokuzisa lula kubasebenzisi be-EV, ukunciphisa ukungcoliswa komoya wasezidolophini, kunye nokunciphisa uxinzelelo oluhambelana nobomi beselula, ngaloo ndlela kwandisa imveliso yoluntu lwethu.
Iqela lilindele ukuba le teknoloji iphawulekayo isetyenziswe kwizithuthi zombane kunye nezinye i-electronics kungekudala.
Varma, A., et al.(2022) I-Hierarchical nanosheets esekelwe kwi-titanium diboride njengezinto ze-anode kwiibhetri ze-lithium-ion.Isetyenziselwe i-nanomaterials ACS.doi.org/10.1021/acsanm.2c03054.
Kulo dliwano-ndlebe e-Pittcon 2023 e-Philadelphia, PA, sathetha noDkt. Jeffrey Dick malunga nomsebenzi wakhe kwi-chemistry ephantsi kunye nezixhobo ze-nanoelectrochemical.
Apha, i-AZoNano ithetha ne-Drigent Acoustics malunga neenzuzo ezinokuthi igraphene izise kwitekhnoloji ye-acoustic kunye ne-audio, kunye nendlela ubudlelwane benkampani kunye ne-graphene flagship eyimise ngayo impumelelo yayo.
Kolu dliwano-ndlebe, uBrian Crawford we-KLA uchaza yonke into ekhoyo malunga ne-nanoindentation, imingeni ekhoyo ejongene nentsimi, kunye nendlela yokuzoyisa.
I-AUTOsample-100 entsha ye-autosampler iyahambelana ne-benchtop 100 MHz NMR spectrometers.
I-Vistec SB3050-2 yinkqubo ye-e-beam lithography ye-state-of-the-art kunye ne-teknoloji ye-beam eguquguqukayo kwizicelo ezininzi zophando kunye nophuhliso, i-prototyping kunye nemveliso encinci.