Silicon anodes yakakwezva kutarisisa kukuru muindasitiri yebhatiri.Kuenzaniswa nelithium-ion mabhatirivachishandisa graphite anodes, vanogona kupa 3-5 nguva yakakura simba.Iyo yakakura huwandu hunoreva kuti bhatiri rinogara kwenguva yakareba mushure mekuchaja yega yega, iyo inogona kuwedzera zvakanyanya kureba kwekutyaira kwemotokari dzemagetsi.Kunyangwe silicon yakawanda uye yakachipa, iyo yekuchaja-yekuburitsa mitsetse yeSi anodes ishoma.Munguva yega yega yekuchaja-kuburitsa kutenderera, vhoriyamu yavo ichawedzerwa zvakanyanya, uye kunyangwe capacitance yavo inoderera, izvo zvinozotungamira mukuputsika kweiyo electrode particles kana delamination yeelectrode film.

Dare reKAIST, rinotungamirirwa naProfessor Jang Wook Choi naProfessor Ali Coskun, vakashuma musi wa 20 July imwe molecular pulley adhesive yehukuru hwemabhatiri lithium ion nesilicon anodes.

Chikwata cheKAIST chakabatanidza mamolecular pulleys (anonzi polyrotaxanes) mubhatiri electrode binders, kusanganisira kuwedzera mapolymers kumagetsi ebhatiri kuti abatanidze maelectrodes kumasimbi substrates.Zvindori zviri mupolyrotane zvakanamirwa mupolymer skeleton uye zvinogona kufamba zvakasununguka pamwe neskeleton.

Mhete dziri mupolyrotane dzinogona kufamba zvakasununguka nevhoriyamu shanduko yesilicon particles.Kutsvedza kwezvindori kunogona kunyatso kuchengetedza chimiro chesilicon zvidimbu, kuitira kuti zvisaparare mukuenderera kwevhoriyamu shanduko.Zvinokosha kuziva kuti kunyange yakapwanyika silicon zvimedu zvinogona kuramba coalescent nekuda kwepamusoro elasticity ye polyrotane adhesives.Basa rezvinamira zvitsva zvakapesana neaya ezvinonamira zviripo (kazhinji zviri nyore mutsara mapolymer).Iwo anonamatira aripo ane mashoma elasticity uye saka haakwanise kuchengetedza zvakasimba chimiro chechidimbu.Zvekare zvinonamira zvinogona kuparadzira akapwanyika zvimedu uye kuderedza kana kutorasikirwa nehukuru hwesilicon electrode.

Munyori anotenda kuti ichi chiratidziro chakanakisa chekukosha kwekutsvaga kwekutanga.Polyrotaxane akahwina Mubairo weNobel gore rapfuura nekuda kweiyo pfungwa ye "mechanical bonds"."Mechanical bonding" ipfungwa ichangobva kutsanangurwa inogona kuwedzerwa ku classical chemical bonds, zvakadai se covalent bonds, ionic bonds, coordination bonds uye metal bonds.Kutsvakurudza kwenguva refu kwekutanga kuri kugadzirisa zvishoma nezvishoma matambudziko akareba e teknolojia yebhatiri pamwero usingatarisirwi.Vanyori vakataurawo kuti parizvino vari kushanda neanogadzira bhatiri hombe kubatanidza mamolecular pulleys muzvigadzirwa zvebhatiri chaizvo.

Sir Fraser Stoddart, 2006 Noble Laureate Chemistry Award kuNorthwestern University, akawedzera kuti: “Mechanical bond dzapora kekutanga munzvimbo yekuchengetedza simba.Chikwata cheKAIST neunyanzvi chakashandisa ma mechanical binders mu slip-ring polyrotaxanes and functionalized alpha-cyclodextrin spiral polyethylene glycol, zvichiratidza kubudirira mukushanda kwemabhatiri e-lithium-ion pamusika, apo pulley-shaped aggregates ane mechanical binders.Makomponi anotsiva zvakajairwa nekemikari imwe chete chisungo, icho chichava nemhedzisiro yakakura pane zvinhu zvemidziyo nemidziyo.