I-California University yenza i-diaphragm yebhethri entsha ukuze igweme ukuqhuma kwebhethri ngokusebenzisa amanethi e-carbon nanotube

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Προμηθευτής φορητών σταθμών παραγωγής ενέργειας

I-nano-engineer yaseNyuvesi yaseCalifornia San Diego ithuthukise isici esiphephile esivimbela amabhethri ensimbi ye-lithium ukuthi afudumale ngokushesha futhi axoshwe lapho esebenza kancane. U-Liu Ping, uprofesa we-nano-engineering waseCalifornia, e-San Diego, ushicilele iphepha kumagazini othi "Advanced Materials", owanyatheliswa kumagazini othi "Advanced Materials", wethula umsebenzi wabo ngokuningiliziwe. Amabhethri ensimbi ye-lithium anamandla amakhulu ekusebenzeni, kodwa kulula ukwehluleka ngendlela yamanje.

Lokhu kungenxa yokukhula kwesakhiwo senaliti esibizwa ngokuthi i-dendritic crystal, i-dendrimature yenziwa ku-anode ngemva kokushajwa kwebhethri, futhi isihlukanisi singabhobozwa, futhi isihlukanisi sakhiwe phakathi kwe-anode ne-cathode. Umgoqo, amandla anciphisa nokugeleza kokushisa. Lapho lesi sithiyo sicekelwa phansi futhi ama-electron ekwazi ukugeleza ngokukhululeka kakhudlwana, akhiqiza ama-calories engeziwe, futhi izinto zizobe zingalawuleki, okubangela ukushisa kwebhethri, ukuhluleka, umlilo, ngisho nokuqhuma.

Ososayensi bafuna ukuxazulula lezi zinkinga ngamabhethri ensimbi ye-lithium ngezindlela ezihlukahlukene, lapho izendlalelo ze-ultrasonic noma ezikhethekile zokuzivikela zisebenzisa i-ultrasound noma izendlalelo ezikhethekile zokuzivikela ekubeni amathuba ambalwa kuphela. Ithimba lisule ingxenye yebhethri ebizwa ngokuthi i-diaphragm. I-diaphragm iyisithiyo phakathi kwe-electrode ephozithivu kanye ne-electrode eyinegethivu, ukuze kuthi lapho ibhethri lilifushane, amandla anqwabelene ebhethrini (okungukuthi, ukushisa) ageleze Kancane kancane.

Umbhali wokuqala wale thesis wamangala: “Asizami ukuvimbela ukwehluleka kwebhethri. Senza nje ibhethri livikeleke kakhulu, ngakho uma lehluleka, ibhethri ngeke libambe umlilo noma ukuqhuma. Amabhethri ensimbi ye-lithium Ngemva kokushaja ngokuphindaphindiwe, i-anode izovela ku-anode.

Ngokuhamba kwesikhathi, ukukhula kwe-dendritic isikhathi eside ngokwanele, kungena ku-diaphragm, kuphakamisa ibhuloho phakathi kwe-anode ne-cathode, okubangela izifunda ezimfushane zangaphakathi. Uma lokhu kwenzeka, ukugeleza kwe-electron phakathi kwama-electrode amabili kuyalahleka, okwenza ibhethri lijike kakhulu futhi iyeke ukusebenza. Ithimba labacwaningi eNyuvesi yaseCalifornia San Diego ngokuyisisekelo lincishisiwe.

Olunye uhlangothi lumboza ungqimba oluncane, inethiwekhi ye-carbon nanotube ehambisa kancane kagesi, engavimba noma yikuphi ukwakheka kwama-dendrites. Lapho i-dendritic inamathisela i-diaphragm futhi ishaya inetha ye-carbon nanotube, i-electronic ineshaneli, engaphuma kancane kancane, hhayi ngqo ku-cathode. U-Gonzalez uzoqhathanisa isihlukanisi sebhethri esisha nendlela yokukhipha amanzi edamini.

Uthe: “Uma idamu seliqala ukuvalelwa, uzovula ukuchitheka, udedele amanzi aphume ngendlela elawulekayo. Ngale ndlela, lapho idamu liwugwadule ngempela, awekho amanzi amaningi angabangela izikhukhula. Lona umqondo wesihlukanisi sethu, esinciphisa kakhulu isivinini sokushaja, ukuvimbela "ukukhukhula" kwe-electronic ku-cathode.

Lapho i-dendritic inqanyulwa ungqimba olusebenzayo lwesihlukanisi, ibhethri izoqala ukukhipha, ngakho-ke lapho ibhethri lifushane, awekho amandla anele okuba yingozi. "Omunye umsebenzi wokucwaninga ngebhethri ugxile ekuvimbeni ukungena kwama-dendrites ngento eqinile ngokwanele. Kepha uGonzalez uthe inkinga ngale ndlela ukuthi inwetshiwe kuphela imiphumela engenakugwemeka.

Lezi zihlukanisi zisadinga kahle, zivumela ama-ion ukuthi adlule ukuze ibhethri lisebenze. Ngakho-ke, lapho umuthi usudlulile ekugcineni, isifunda esifushane sizoba sibi kakhulu. Esivivinyweni, ibhethri yensimbi ye-lithium efakwe kusihlukanisi esisha sibonisa izimpawu zokwehluleka kancane kancane emijikelezweni engama-20 kuye kwengama-30.

Ngesikhathi esifanayo, ibhethri kanye nesipiliyoni esijwayelekile (futhi esiwugqinsi kancane) esihlukanisayo sivele sibe namaphutha emjikelezweni owodwa. "Ezimweni zangempela, ngeke ube nesixwayiso kusengaphambili mayelana nebhethri selizohluleka. Isekhondi elidlule lingase libe lilungile, lizoba nomlilo noma isifunda esifushane ngokuphelele ngomzuzwana olandelayo.

Lokhu bekungalindelekile, ”kusho uGonzalez. “Kepha ngomhlukanisi wethu, nizoxwayiswa kusenesikhathi, nibe kubi kakhulu, nibe kubi kakhulu, nisiba kubi kakhulu, nikhula njalo. "Nakuba okugxilwe kwalolu cwaningo amabhethri ensimbi ye-lithium, abacwaningi bathi lesi sihlukanisi singasetshenziswa futhi kuma-ion e-lithium nokunye ukusabela kwamakhemikhali ebhethri.

Ithimba locwaningo lizozibophezela ekwandiseni ukusetshenziswa kwezentengiso kwesihlukanisi. Inyuvesi yaseCalifornia iSan Diego ifake isicelo selungelo lobunikazi lesikhashana kulolu cwaningo.