Masana kimiyya na Amurka sun sami asarar rayuwar batir lithium-ion? Ka huta!

2022/04/08

Mawallafi: Iflowpower -Mai Bayar da Tashar Wutar Lantarki

Kwanan nan, labarin da ake kira "Masana kimiyya na Amurka sun gano gajerun dalilai na asarar batirin lithium", kamar yadda mutum a cikin masana'antar batirin lithium-ion, shekaru da yawa kwarewa ya gaya mani cewa tsarin baturi ya bambanta, kayan aiki daban, yanayi ya bambanta Zai yi wani tasiri a rayuwar batir, don haka lokacin da wani ya tambayi dalilin rayuwar batirin lithium-ion, Xiaobian bai taba ba da amsar kai tsaye ba, dole ne a nemi tsarin baturi, bayan amfani da na'urar. da kuma yanayin da za a yi taka tsantsan In-mataki, don haka lokacin da Xiaobian ya ga irin wannan kalma, labarin ya yi babban gilashin ido ya fadi, ya tsorata Xiaobian da sauri ya sami wannan labarin don yin nazari a hankali, amma ya sami wannan labarin yana tunanin hargitsi, ra'ayi ba shi da tabbas, rashin taimako na gaba, Xiaobian dole ne a nemo sakamakon bincike na "masana kimiyya na Amirka" da aka ambata a cikin wannan labarin a cikin mujallolin "ScienceAdvance". "Masanin kimiya na Amurka" a cikin labarin kan layi mai suna Weizhang, yaya ake sauraron wannan ya saba? Ee, wannan shine almara Zhang Wei. Ya kamata a fassara taken wannan labarin zuwa "Lithium ion a cikin tsarin jujjuyawar taro na gida a cikin tsarin shigar da nanoparticles".

Ta hanyar taƙaitawa, mun fahimci cewa wannan labarin yana da mahimmanci don nazarin ilimin motsa jiki na kayan nano-liFepo4, kuma gano cewa ko da Li + Lokacin da aka saka a cikin nano LifePO4, rarrabawar rarraba Li + a cikin nanoparticles ba daidai ba ne, da kuma maida hankali na gida. na Li + a cikin nanoparticles kuma yana da sauye-sauye. Na gaba, bari mu dubi ra'ayoyin marubucin da ke son bayyanawa a cikin rubutun. Kuma akwai kuma wani sabon abu na gida li maida hankali hawa da sauka.

To mene ne amfanin wannan nemo? Bisa ga bayanin marubucin, wannan binciken zai samar da sabon hangen nesa don nazarin binciken microharitation a cikin mono-nanoparticles. Bayan haka, an gabatar da Xiaobian a takaice sakamakon binciken weizhang. Na dogon lokaci, saboda babban wurin zama na rufaffiyar tsarin da ƙarfe Li na baturin lithium-ion, yana da matukar wahala a yi nazarin tasirin tasirin batir lithium ion, don haka bayanan gwaji akan ƙarfin baturi na lithium-ion bincike yana da mahimmanci. nisa a baya ka'idar.

Gudun ci gaba. Koyaya, a cikin 'yan shekarun nan, saurin haɓakar abubuwan lura a cikin wurin yana ba mu damar bin tsarin amsawa a cikin barbashi guda ɗaya mai aiki, adadi mai zuwa yana nuna hanya don marubucin don lura da halayen haɗaɗɗen da aka yi amfani da su a cikin barbashi nano-LFP: 1 ) Na farko, Mawallafa suna shirya takarda-kamar crystal LFP guda ɗaya; 2), sa'an nan kuma haɗa waɗannan kayan LFP masu kama da takarda akan na'urar lantarki don duba TEM; 3) A ƙarshe an taru don gwada batura. Ta wannan hanyar, ana iya cajin baturi da fitarwa yayin da ake duban TEM.

Binciken WEIZHANG ya nuna cewa a lokacin Lithium Lithium, ba wai kayan da muke yawan jujjuya su daga lokacin FP zuwa halayen lokaci biyu ba, kuma babu wani abin da ya dace a fili a lokacin duk abin da ya faru, kuma dukkan tsarin hawan keke ya kamata ya zama tsayayyen ƙuduri. dauki tsari. Zane mai ƙarfi mai zuwa yana kwatanta canji a cikin maida hankali a cikin tsarin lithium tsarin LLP crystal barbashi a cikin yanki na 3 * 3 nm2 (ja yana wakiltar babban maida hankali Li, blue yana wakiltar ƙananan maida hankali), kuma ana iya gani daga tsarin dauki. fara A lokacin, yawan adadin Li na gida ya ƙaru da sauri (0.6-59s), kuma yawan LI na yankin babban taro na Li ya fara raguwa, kuma a ƙarshe ya faɗi zuwa 0.

1 (a 121S), sa'an nan an taso da maida hankali na gabaɗayan Li, wanda ya kai 0.7 (200S)), waɗanda suka fara fara lithium, amma a ƙarshe, sun kammala lithium. Ganowar WEIZHANG Lokacin da yankin bincike ya ƙara ƙaruwa zuwa 10 * 10 nm2, girman canjin maida hankali a cikin barbashi zai ragu sosai, kuma abin da ke haifar da haɓakar maida hankali ya kusan ba a gani yayin da aka ƙara haɓaka kewayon bincike zuwa 20 * 20 nm2. .

Canje-canje a cikin maida hankali na LI a cikin LFP dole ne a lura da shi ta hanyar manyan hanyoyin magancewa, wanda kuma aka lura a cikin binciken da suka gabata. Muhimmiyar gudummawa ga wannan aikin na WEIZHANG har yanzu a cikin gano ko da a cikin guda nanoparticle, har yanzu akwai wani sabon abu a cikin abin da lithium lithium ne m, da kuma gida har yanzu yana da wani sabon abu na lithoscopic hawa da sauka, wanda shine nazarin lithium kuzarin kawo cikas na LFP kayan. . An kawo sabon hangen nesa, amma marubucin bai ambaci wannan al'amari mara daidaituwa ba kuma ko lithium lithography zai yi tasiri sosai a rayuwar baturin lithium-ion.

Babu shakka, "Masana kimiyya na Amurka sun sami asarar rayuwar batirin lithium" Wannan labarin ya bayyana abin da ke cikin rubutun asali, akwai tuhuma da gangan karin gishiri, gashin ido mai launin fata. .

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