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亞博網頁登陸于吉紅院士科研團隊在固態鋰空電池研發方面取得重要進展
作者:未來科學國際合作聯合實驗室  時間:2021-04-22  點擊數:

【xiaoxilaiyuan:weilaikexueguojihezuolianheshiyanshi】riqian,yabowangyedengluhuaxuexueyuan、wujihechengyuzhibeihuaxueguojiazhongdianshiyanshi、weilaikexueguojihezuolianheshiyanshiyujihongyuanshiyanjiutuanduizaixinxinggutaidianjiezhijigutaidianchiyanfafangmianqudezhongyaojinzhan,gaiyanjiuchengguoyi“a highly stable and flexible zeolite electrolyte solid-state li–air battery”(jiyufenzishaidianjiezhigaowendingrouxinggutailikongqidianchi)weitifabiaozai《ziran》shang(nature, 2021, doi: 10.1038/s41586-021-03410-9)。

likongqidianchijuyouchaogaodelilunnengliangmidu,beiyuweigemingxingdianchijishu。qizhong,gutailikongqidianchijiaochuantongdeyetailikongqidianchijuyougenggaodeanquanxinghewendingxing。gutaidianjiezhishigutaidianchideguanjiancailiao。shiyongyugutailikongqidianchidegutaidianjiezhi,chumanzugaolizidiandaolvhelianghaodejiemianxiangrongxingwai,huanyingmanzu:duikongqichengfenwending,shidianchinenggouzaikongqizhongyunxing;kangyanghuanengliqiang,yidikangdianchiyunxingguochengzhongchanshengdejuyouqiangyanghuanenglideyanghuanyuanzhongjiantidefushi。erchangjiandewujigutaidianjiezhicailiao,rushiliushi、gaitaikuang、nasiconheliuhuawudengyouyuduihuanjingkongqichengfenhuojinshulifujibuwending,bunengmanzugutailikongqidianchishijiyunxingdeyaoqiu。gengyanzhongdeshi,changyonggutaidianjiezhijiaogaodedianzidiandaolvshijinshuliyizaidianjiezhineibuchengheheshengchang,daozhidianchiduanlujineryinfaanquanshigu。jianjugaowendingxinghegaohuanjingshiyingxingdegutaidianjiezhicailiaodequefayanzhongzhiyuelegutailikongqidianchidefazhanheyingyong。

亞博網頁登陸于吉紅院士研究團隊設計研制了一種基于分子篩薄膜的全新固態電解質材料,該電解質展現出高達2.7×10?4S cm?1的離子電導率、低至1.5×10?10S cm?1的電子電導率、以及對空氣成分和鋰負極的高度穩定性,有效解決了傳統固態電解質材料的界面構建困難、內部鋰枝晶和穩定性差等問題,并通過原位生長策略設計構建了一體化柔性固態鋰空氣電池(圖1a)。得益于良好的“電解質-電極”低阻抗接觸界面(圖1b),該電池在實際空氣環境中展現出12020 mAh g?1的超高容量和149次的超長循環壽命(500 mA g?1和1000 mAh g?1),遠優于基于當前最穩定的NASICON型LAGP固態電解質的固態鋰空氣電池(12次),甚至優于同等條件下使用有機電解液的鋰空氣電池(102次)(圖1c)。同時,該電池展現出優異的柔性、高的安全性和良好的環境適應性(圖1d-f),并兼顧環境友好、成本低廉、工藝簡單的生產需求。分子篩固態電解質的應用還有望拓展到鋰離子電池、鈉離子電池、鎂離子電池、鈉空氣電池等固態儲能體系,展現出廣闊的應用前景。新型分子篩固態電解質的成功研制,為固態電解質材料和固態儲能器件的發展提供了新思路。

tu1:a,fenzishaijigutailikongqidianchiyitihuasheji。b,fenzishaigutaidianjiezhi-tannamiguanzhengjiyitihuajiegoudesaomiaodianjingtuhetoushedianjingtu。c,jiyuyoujidianjieye、shangyonglagphefenzishaigutaidianjiezhidelikongqidianchidexunhuanshoumingduibi。d,houdujinwei0.33mmdegutailikongqidianchideguangxuezhaopian。e,gutailikongqidianchiderouxing。f,gutailikongqidianchideanquanxinghehuanjingshiyingxing。

zheyiyanjiugongzuodedaoleguojiazirankexuejijin、111xiangmudengzhichi。yabowangyedengluweilunwenweiyiwanchengdanwei。yabowangyedengluyujihongjiaoshouhexujijingjiaoshouweilunwendegongtongtongxunzuozhe,yabowangyedengluzaiduboshiyanjiushengchiqianwenweilunwendiyizuozhe。

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