Iibhetri zeLithium zitshintshe izixhobo zombane eziphathwayo kwaye zisetyenziswa kwizixhobo zamandla amatsha, kodwa uphuculo olongezelelweyo ebomini namandla luya kufuna ubugcisa obutsha. Enye inketho ibhetri yensimbi ye-lithium, enobomi obude bebhetri kunye nesantya sokutshaja ngokukhawuleza, kodwa kukho iingxaki kule teknoloji. Iidiphozithi zeLithium, ezibizwa ngokuba zii-dendrites, zikholisa ukukhula kwi-anode kwaye zinokwenza isekethe emfutshane, ibangele ukusilela kwebhetri, umlilo okanye ugqabhuko-dubulo.

Okwangoku, abaphandi abavela kwiZiko leKhemistry, iAkhademi yaseTshayina yeSayensi, iYunivesithi yaseTshayina yeSayensi yeSayensi, kunye neZiko loPhando lweSayensi ePhakamileyo yaseTshayina kunye neTekhnoloji yoPhando baye baqulunqa isahluli senwebu esekelwe kwi-carbon allotropes. Ibizwa ngokuba yigraphene, esebenza njengesihluzo se-lithium ion ukuthintela ukukhula kwe-dendritic [Shangetal. Izinto eziphathekayo.10 (2018) 191-199].

Iibhetri zesinyithi ze-lithium zifana nengcamango kwiibhetri ze-lithium, kodwa zithembele kwi-lithium metal anode. Ngethuba lenkqubo yokukhupha, i-lithium anode inikezela ngee-electron kwi-cathode ngokusebenzisa isiphaluka sangaphandle. Nangona kunjalo, xa utshaja, i-lithium ifakwe kwi-anode. Kule nkqubo, i-dendrites engafunwayo iya kwenza.

Lo ngumsebenzi we-diaphragm. Isahluli se-membrane esenziwe nge-ultra-thin (10nm) yegraphite diacetylene (i-two-dimensional hexagonal carbon atom monolayer edityaniswe ngamatyathanga e-succinic acid) inexabiso elisebenzayo elibalulekileyo. I-graphite diacetylene ayinayo kuphela i-elasticity kunye nokuqina, kodwa isakhiwo sayo sekhemikhali senza inethiwekhi ye-pore efanayo, evumela ukuba i-lithium ion enye idlule. Oku kulawula ukuhamba kweeyoni kwi-membrane, okukhokelela ekusasazweni okufanayo kwee-ion. Okubalulekileyo, olu phawu luthintela ngokufanelekileyo ukukhula kwe-lithium dendrites.

U-Li Yuliang we-Institute of Chemistry ye-Chinese Academy of Sciences, owayekhokela uphando, wachaza ukuba i-lithium dendrites inokuzinzisa i-interface eqinile ye-electrolyte, ngaloo ndlela yandisa ubomi besixhobo kunye namandla e-Coulomb. Thintela isekethe emfutshane emile okwemithi kwaye ufikelele kwibhetri ngokukhuselekileyo.

Abaphandi bakholelwa ukuba iifilimu zegraphene-diethyne zinokoyisa ezinye zeengxaki ezinameva ezijongene neebhetri ze-lithium kunye nezinye iibhetri zesinyithi zealkaline.

U-Li uthe i-graphitic diacetylene yimpahla ye-getter ene-hyper-conjugated structure, i-gap ye-inherent band, isakhiwo se-macroporous yendalo kunye nomsebenzi we-semiconductor. Ibonelela ngethemba elikhulu lokusombulula iingxaki ezinkulu zenzululwazi kweli candelo.

Idatha ye-two-dimensional nayo ilula kakhulu, kwaye kulula ukuyifumana phantsi kweemeko eziqhelekileyo zaselabhoratri.

Abaphandi baxelele iintatheli ukuba nangona umsebenzi omninzi kufuneka wenziwe ukuphucula umgangatho weefilimu ze-graphite-diacetylene kwizinga elikhulu, sikholelwa ukuba i-graphite-diacetylene ingaba nefuthe elibi kukhuseleko lweebhetri ze-lithium.