Kuhlelo lwamanje lwebhethri ye-lithium-ion yezentengiselwano, isici esikhawulelayo ikakhulukazi ukuqhutshwa kukagesi.Ikakhulukazi, i-conductivity enganele yezinto ezibonakalayo ze-electrode ikhawulela ngokuqondile umsebenzi we-electrochemical reaction.Kudingekile ukwengeza i-ejenti ye-conductive efanelekile ukuze kuthuthukiswe ukuqhutshwa kwento futhi kwakhiwe inethiwekhi ye-conductive ukuze kuhlinzekwe isiteshi esisheshayo sokuthutha ama-electron futhi kuqinisekiswe ukuthi impahla esebenzayo isetshenziswa ngokugcwele.Ngakho-ke, i-ejenti yokuqhuba nayo iyinto ebaluleke kakhulu ebhethri ye-lithium ion ehlobene nento esebenzayo.

Ukusebenza kwe-ejenti yokuqhuba kuncike kakhulu ekwakhekeni kwezinto ezisetshenziswayo kanye nezindlela ethintana ngayo nezinto ezisebenzayo.Ama-agent conductive ebhethri e-lithium ion asetshenziswa ngokuvamile anezici ezilandelayo:

(1) Ikhabhoni emnyama: Ukwakheka kwekhabhoni emnyama kuvezwa izinga lokuhlanganisa izinhlayiya zekhabhoni ezimnyama zibe yiketango noma umumo wamagilebhisi.Izinhlayiya ezinhle, iketango lenethiwekhi eliminyene, indawo enkulu ethize engaphezulu, kanye nesisindo seyunithi, okuzuzisa ukwakha uhlaka lweketango lokuqhuba ku-electrode.Njengommeleli we-conductive agents, i-carbon black okwamanje iyona esetshenziswa kakhulu e-conductive agent.Ububi ukuthi intengo iphezulu futhi kunzima ukuyihlakaza.

(2)I-graphite: I-graphite ye-conductive ibonakala ngosayizi wezinhlayiyana eduze kwaleyo yezinto ezisebenzayo ezilungile nezingalungile, indawo ethile ephakathi nendawo, kanye nokuhamba kahle kukagesi.Isebenza njenge-node yenethiwekhi ye-conductive ebhethri, futhi ku-electrode engalungile, ayikwazi nje ukuthuthukisa i-conductivity , kodwa futhi umthamo.

(3) I-P-Li: I-Super P-Li ibonakala ngosayizi wezinhlayiyana ezincane, ezifana ne-carbon conductive black, kodwa indawo ethile ephakathi nendawo, ikakhulukazi ngesimo samagatsha ebhethri, okuzuzisa kakhulu ukwakha inethiwekhi ye-conductive.Ububi ukuthi kunzima ukuhlakazeka.

(4)Ama-Carbon nanotubes(CNTs): Ama-CNT ama-ejenti okuqhuba avele eminyakeni yamuva.Ngokuvamile banobubanzi obungaba ngu-5nm nobude obuyi-10-20um.Abakwazi nje ukwenza "njengezintambo" kumanethiwekhi okuqhuba, kodwa futhi babe nomphumela wengqimba ye-electrode ephindwe kabili ukunikeza ukudlala kuzici zezinga eliphezulu lama-supercapacitor.I-thermal conductivity yayo enhle iphinde ibe nomthelela ekulahlekeni kokushisa ngesikhathi sokushajwa nokukhipha ibhethri, ukunciphisa ukuhlukaniswa kwebhethri, ukuthuthukisa ukusebenza kwebhethri okuphezulu nokuphansi kwezinga lokushisa, kanye nokwelula impilo yebhethri.

Njenge-ejenti ye-conductive, ama-CNT angasetshenziswa ngokuhambisana nezinto ezihlukahlukene zama-electrode ukuze kuthuthukiswe umthamo, izinga, nokusebenza komjikelezo wento/ibhethri.Izinto ze-electrode ezinhle ezingasetshenziswa zihlanganisa: LiCoO2, LiMn2O4, LiFePO4, polymer positive electrode, Li3V2(PO4)3, manganese oxide, nokunye okunjalo.

Uma kuqhathaniswa namanye ama-conductive agents ajwayelekile, ama-carbon nanotubes anezinzuzo eziningi njengama-ejenti asebenzayo futhi angalungile amabhethri e-lithium ion.Ama-nanotubes e-carbon ane-conductivity ephezulu kagesi.Ngaphezu kwalokho, ama-CNT ane-aspect ratio enkulu, futhi inani eliphansi elingeziwe lingafinyelela umkhawulo we-percolation ofana nezinye izithasiselo (ukugcina ibanga lama-electron kunhlanganisela noma ukufuduka kwendawo).Njengoba i-carbon nanotubes ingakha inethiwekhi yezokuthutha yama-electron esebenza kahle kakhulu, inani le-conductivity elifana nelesengezo sezinhlayiyana esiyindilinga lingafinyelelwa ngo-0.2 wt% kuphela we-SWCNTs.

(5)I-grapheneiwuhlobo olusha lwezinto eziguquguqukayo ezinezinhlangothi ezimbili zekhabhoni ezine-conductivity enhle kakhulu kagesi kanye ne-thermal.Isakhiwo sivumela ungqimba lweshidi le-graphene ukuthi linamathele ezinhlayiyeni zezinto ezisebenzayo, futhi linikeze ngenani elikhulu lezindawo zokuxhumana ezisebenzayo zezinhlayiya zezinto ezisebenzayo ze-electrode esebenzayo, ukuze ama-electron aqhutshwe endaweni enezinhlangothi ezimbili ukuze akhe inethiwekhi ye-conductive yendawo enkulu.Ngakho-ke kubhekwa njenge-ejenti efanelekile yokuqhuba njengamanje.

I-carbon black kanye nezinto ezisebenzayo zixhumene nephuzu, futhi zingangena ezinhlayiyeni zezinto ezisebenzayo ukuze zikhulise ngokugcwele isilinganiso sokusetshenziswa kwezinto ezisebenzayo.I-carbon nanotubes ixhumene nomugqa wephuzu, futhi ingafakwa phakathi kwezinto ezisebenzayo ukwenza isakhiwo senethiwekhi, esingagcini nje ukwandisa ukuqhutshwa kwe-conductivity, Ngesikhathi esifanayo, ingakwazi futhi ukusebenza njenge-ejenti yokubopha ingxenye, kanye nemodi yokuxhumana ye-graphene. ukuxhumana okukhomba ubuso nobuso, okungaxhuma ubuso bezinto ezisebenzayo ukuze kwakhiwe inethiwekhi ye-conductive yendawo enkulu njengomzimba oyinhloko, kodwa kunzima ukumboza ngokuphelele izinto ezisebenzayo.Ngisho noma inani le-graphene elingeziwe likhuphuka ngokuqhubekayo, kunzima ukusebenzisa ngokuphelele into esebenzayo, nokusabalalisa ama-Li ions futhi konakalise ukusebenza kwe-electrode.Ngakho-ke, lezi zinto ezintathu zinenkambiso enhle ehambisanayo.Ukuxuba i-carbon black noma i-carbon nanotubes ne-graphene ukuze kwakhiwe inethiwekhi eqhutshwayo egcwele kakhulu kungathuthukisa ukusebenza kukonke kwe-electrode.

Ngaphezu kwalokho, ngokombono we-graphene, ukusebenza kwe-graphene kuyahlukahluka ezindleleni ezihlukene zokulungiselela, ngezinga lokunciphisa, ubukhulu beshidi kanye nenani le-carbon black, i-dispersibility, kanye nobukhulu be-electrode konke kuthinta imvelo. ama-ejenti conductive kakhulu.Phakathi kwabo, njengoba umsebenzi we-agent conductive ukwakha inethiwekhi ye-conductive yokuthutha i-electron, uma i-agent conductive ngokwayo ingahlakazeki kahle, kunzima ukwakha inethiwekhi ephumelelayo.Uma kuqhathaniswa ne-ejenti eqhuba ikhabhoni emnyama yendabuko, i-graphene inendawo ethize ephezulu kakhulu, futhi umphumela we-π-π we-conjugate wenza kube lula ukuhlanganisa izinhlelo zokusebenza ezingokoqobo.Ngakho-ke, indlela yokwenza i-graphene ibe uhlelo oluhle lokuhlakazeka nokusebenzisa ngokugcwele ukusebenza kwayo okuhle kakhulu kuyinkinga eyinhloko edinga ukuxazululwa ekusetshenzisweni okubanzi kwe-graphene.