Ua ʻike nui ʻia nā anodes Silicon i ka ʻoihana pākaukau.Hoʻohālikelike ʻia menā pākahi lithium-ionme ka hoʻohana ʻana i nā anodes graphite, hiki iā lākou ke hāʻawi i 3-5 mau manawa ʻoi aku ka nui.ʻO ka mana nui, ʻo ia ka mea e lōʻihi ka lōʻihi o ka pākaukau ma hope o kēlā me kēia kau ʻana, hiki ke hoʻolōʻihi i ka mamao o ke kaʻa o nā kaʻa uila.ʻOiai ka nui a me ka liʻiliʻi o ke silika, ua kaupalena ʻia nā kaʻina hoʻokuʻu o Si anodes.I loko o kēlā me kēia pōʻai hoʻokuʻu, e hoʻonui nui ʻia ko lākou leo, a e emi iho ko lākou capacitance, e alakaʻi i ka haki ʻana o nā ʻāpana electrode a i ʻole ka delamination o ke kiʻi electrode.

ʻO ka hui KAIST, i alakaʻi ʻia e Professor Jang Wook Choi a me Professor Ali Coskun, i hōʻike i ka lā 20 Iulai i kahi molecular pulley adhesive no ka nui o ka mana lithium ion me nā anodes silicon.

Ua hoʻohui ka pūʻulu KAIST i nā pulley molecular (i kapa ʻia polyrotaxanes) i loko o nā mea hoʻopaʻa uila uila, me ka hoʻohui ʻana i nā polymers i nā electrodes pākahi e hoʻopili i nā electrodes i nā substrate metala.Hoʻopili ʻia nā apo o ka polyrotane i loko o ka iwi polymer a hiki ke neʻe manuahi ma ka iwi.

Hiki i nā apo i polyrotane ke neʻe wale me ka hoʻololi o ka leo o nā ʻāpana silika.Hiki i ka paheʻe o nā apo ke mālama pono i ke ʻano o nā ʻāpana silika, i ʻole lākou e hemo i ke kaʻina hoʻololi mau.He mea nui ia e hiki ke hoʻomau i ka coalescent ma muli o ka elasticity kiʻekiʻe o ka polyrotane adhesives.He ʻokoʻa loa ka hana o nā mea hoʻopili hou me nā mea hoʻopili i loaʻa (maʻa mau nā polymers linear maʻalahi).He liʻiliʻi ka elasticity o nā mea hoʻopili i kēia manawa a no laila ʻaʻole hiki ke mālama paʻa i ke ʻano o nā ʻāpana.Hiki i nā mea hoʻopili mua ke hoʻopuehu i nā ʻāpana i ʻoki ʻia a hōʻemi a nalowale paha i ka hiki o nā electrodes silicon.

Manaʻo ka mea kākau he hōʻike maikaʻi loa kēia o ke koʻikoʻi o ka noiʻi kumu.Ua lanakila ʻo Polyrotaxane i ka Nobel Prize i ka makahiki i hala no ka manaʻo o "mechanical bonds".ʻO ka "mechanical bonding" kahi manaʻo i wehewehe hou ʻia e hiki ke hoʻohui ʻia i nā mea paʻa kemika maʻamau, e like me nā paʻa covalent, nā paʻa ionic, nā kaula hoʻohui a me nā mea metala.Ke hoʻoponopono mālie nei ka noiʻi kumu lōʻihi i nā luʻi lōʻihi o ka ʻenehana pākaukau ma kahi wikiwiki i manaʻo ʻole ʻia.Ua ʻōlelo pū nā mea kākau e hana nei lākou me kahi mea hana pākaukau nui e hoʻohui i kā lākou molecular pulleys i nā huahana pākaukau maoli.

Ua hoʻohui ʻo Sir Fraser Stoddart, 2006 Noble Laureate Chemistry Award ma ke Kulanui o Northwestern: “Ua loaʻa hou nā paʻa mīkini no ka manawa mua i loko o kahi wahi mālama ikehu.Ua hoʻohana akamai ka pūʻulu KAIST i nā mea hoʻopaʻa mīkini i nā polyrotaxanes slip-ring a me ka alpha-cyclodextrin spiral polyethylene glycol, e hōʻailona ana i kahi holomua i ka hana ʻana o nā pā lithium-ion ma ka mākeke, i ka wā e hui pū ai ka pulley me nā mea hoʻopili mechanical.Hoʻololi nā mea hoʻohui i nā mea maʻamau me hoʻokahi paʻa kemika, e loaʻa ana ka hopena nui i nā waiwai o nā mea a me nā mea hana.