Ii-silicon anodes zitsale ingqalelo enkulu kushishino lweebhetri. Xa kuthelekiswaiibhetri ze-lithium-ionUkusebenzisa ii-anode ze-graphite, zinokubonelela ngomthamo omkhulu ngokuphindwe ka-3-5. Umthamo omkhulu uthetha ukuba ibhetri iya kuhlala ixesha elide emva kokutshaja ngakunye, nto leyo enokwandisa kakhulu umgama wokuqhuba wezithuthi zombane. Nangona i-silicon ininzi kwaye ingabizi, imijikelo yokutshaja-ukukhupha ii-anode ze-Si ilinganiselwe. Ngexesha lomjikelo ngamnye wokutshaja-ukukhupha, umthamo wazo uya kwanda kakhulu, kwaye namandla azo aya kuncipha, nto leyo eya kukhokelela ekuqhekekeni kwamasuntswana e-electrode okanye ekuqhekekeni kwefilimu ye-electrode.

Iqela le-KAIST, elikhokelwa nguNjingalwazi uJang Wook Choi kunye noNjingalwazi u-Ali Coskun, libike ngomhla wama-20 kuJulayi nge-adhesive ye-molecular pulley yeebhetri ze-lithium ion ezinomthamo omkhulu kunye ne-silicon anodes.

Iqela le-KAIST lidibanise ii-pulleys ze-molecular (ezibizwa ngokuba zii-polyrotaxanes) kwii-battery electrode binders, kuquka nokongeza ii-polymers kwi-battery electrodes ukuze zincamathisele ii-electrodes kwi-metal substrates. Iiringi ezikwi-polyrotane zifakwe kwi-polymer skeleton kwaye zinokuhamba ngokukhululekileyo ecaleni kwe-skeleton.

Iindandatho ezikwi-polyrotane zinokuhamba ngokukhululekileyo ngotshintsho lomthamo wee-silicon particles. Ukutyibilika kwee-rings kunokugcina imo yee-silicon particles ngempumelelo, ukuze zingaqhekeki kwinkqubo yokutshintsha komthamo eqhubekayo. Kuyaphawuleka ukuba nee-silicon particles ezityumkileyo zinokuhlala zi-coalescent ngenxa yokuqina okuphezulu kwee-polyrotane adhesives. Umsebenzi wee-adhesives ezintsha wahluke kakhulu kowee-adhesives ezikhoyo (ngokuqhelekileyo ii-polymers ezilula). Ii-adhesives ezikhoyo zinokuqina okulinganiselweyo kwaye ngenxa yoko azikwazi ukugcina imo yee-particles ngokuqinileyo. Ii-adhesives zangaphambili zinokusasaza ii-particles ezityumkileyo kwaye zinciphise okanye zilahlekelwe ngumthamo wee-electrodes ze-silicon.

Umbhali ukholelwa ukuba oku kubonisa kakuhle ukubaluleka kophando olusisiseko. I-Polyrotaxane iphumelele iMbasa yeNobel kunyaka ophelileyo ngengcamango "yeebhondi zoomatshini". "Ibhondi yoomatshini" yingcamango entsha echazwe enokongezwa kwiibhondi zekhemikhali zakudala, ezifana neebhondi ze-covalent, iibhondi ze-ionic, iibhondi zokulungelelanisa kunye neebhondi zesinyithi. Uphando olusisiseko lwexesha elide lujongana kancinci kancinci nemingeni yexesha elide yetekhnoloji yebhetri ngesantya esingalindelekanga. Ababhali bakwakhankanye ukuba okwangoku basebenzisana nomenzi webhetri omkhulu ukudibanisa iipulleys zabo ze-molecular kwiimveliso zebhetri zokwenyani.

USir Fraser Stoddart, ophumelele iMbasa yeKhemistri yeNoble Laureate ka-2006 kwiYunivesithi yaseNorthwestern, wongeze wathi: “Iibhondi zoomatshini ziphinde zabuya okokuqala kwindawo yokugcina amandla. Iqela le-KAIST lisebenzise ngobuchule iibhondi zoomatshini kwi-polyrotaxanes ezityibilikayo kunye ne-alpha-cyclodextrin spiral polyethylene glycol, nto leyo ebonisa impumelelo ekusebenzeni kweebhetri ze-lithium-ion kwimarike, xa ii-pulley-shaped aggregates kunye nee-mechanical binders. Ii-compounds zithatha indawo yezinto eziqhelekileyo ngebhondi enye kuphela yekhemikhali, eya kuba nefuthe elikhulu kwiimpawu zezixhobo kunye nezixhobo.