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莱斯大学:石墨烯碳纳米管混合电极可将锂电池容量提升3倍,抑制锂枝晶形成!
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       JINSHULIBEITUFUZAISHIMOXI/TANNAMIGUANHUNHECAILIAOSHANGZUOWEIDIANCHIFUJI, LIJINSHUTUFUFUJIDESANWEIJIEGOU,BIMIANXINGCHENGZHIJING。

       JINRIXIAOXI,LAISIDAXUEDEYANJIURENYUANCHUANGJIANLEYIZHONGJIYUSHIMOXIHETANNAMIGUANHUNHEWUDEKECHONGDIANLIDIANCHI,QIRONGLIANGSHIMUQIANSHANGYELILIZIDIANCHIRONGLIANGDESANBEI。ZHEIZHUYAOGUIGONGYUTAMENJIEJUELEZHANGJIUYILAIKUNRAOLIDIANCHIDEXINGNENGTISHENGDE“LIZHIJING”WENTI。

       该电池将金属锂涂覆在石墨烯/碳纳米管复合材料上作为负极。石墨烯/碳纳米管无缝复合材料在2012年就首次被莱斯大学的科研人员制备出来了,由于具有三维结构,该材料的比表面积非常大,可以提供丰富的储存锂的空间。

莱斯大学:石墨烯碳纳米管混合电极可将锂电池容量提升3倍,抑制锂枝晶形成!

       DIANZIXIANWEIJINGTUXIANGXIANSHIJUNYUNTUFUYOUJINSHULIDETANNAMIGUAN。ZAILAISIDAXUECHUANGJIANDESHIMOXI - TANNAMIGUANFUJIDECESHIBIAOMING,TAKEYIDIKANGLISHUZHIZHUANGJINGTIDEXINGCHENG,YANZHANGDIANCHISHOUMING。

       该负极材料的容量达到了储存锂金属的理论最大值,可达3351mAh/g,同时还避免了锂枝晶的形成。锂离子电池在多个充/放电周期、大电流充电或者过长充电时间的情况下,容易在负极表面形成锂枝晶(树突状),不仅会缩减电池的电容量,还会导致短路等安全事故。这个难题已经成为阻碍锂电池向续航力能更久、充电更快发展的瓶颈之一。该研究成果发表在了最新的《ACSNano》杂志上。

莱斯大学:石墨烯碳纳米管混合电极可将锂电池容量提升3倍,抑制锂枝晶形成!

GONGJIAJIANHEDAOSHIMOXIJIDISHANGDETANNAMIGUAN

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       YIGEXINGQIHOU,RajiHETADEYIGEHUOBANCHANGSHIJIANGLIJINSHUCHENJIZAIYIGEDULIDEFUHEFUJICAILIAOSHANG,YIBIANKEYIYONGXIANWEIJINGGUANCHA,“WOMENJINGDAILE,FAXIANMEIYOULIZHIJINGSHENGZHANG,ZHEIJIANGYOUKENENGCHUANGZAOLISHI,”TASHUO。

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       XUDUOKEYANRENYUANZUODIANCHIDEXIANGGUANYANJIUSHIZHIGUANZHUFUJICAILIAO,YINWEIZUOQUANDIANCHIYOUXIEKUNNAN。TourSHUO,YUTAMENBUTONG,WOMENJIANGKAIFAJIYULIUZHENGJIDEJISHUYISHIYINGJIYUZHEIZHONGCHAOGAORONGLIANGDEFUJICAILIAO。WOMENZHENGZAIYIZHONGSHIGUIMOSHENGCHANZHEIZHONGQUANDIANCHI,BAOKUOZHENGJIHEFUJICAILIAO,BINGJINXINGCESHI。LI-LIUDIANCHISHIYIJINSHULIWEIFUJI,DANZHILIUWEIZHENGJIDEERCIDIANCHI,YINQIJUYOUGAODELILUNBIRONGLIANG(1675mAh/g)JILILUNNENGLIANGMIDU(2600 Wh/kg),CHENGWEIZUIJUFAZHANQIANLIDEXINXINGGAONENGHUAXUEDIANYUANTIXIZHIYI。BINGQIE,LIUCHULIANGFENGFU、CHENGBENDILIAN、HUANJINGYOUHAO,SHIYIZHONG"LVSEDIANCHI"。

莱斯大学研制出无缝石墨烯/碳纳米管复合材料(2014)

莱斯大学:石墨烯碳纳米管混合电极可将锂电池容量提升3倍,抑制锂枝晶形成!

       MEIGUOLAISIDAXUEYANJIURENYUANRIQIANYANZHICHUZHANGDUKEYIDADAO120WEIMIDEWUFENGSHIMOXI/TANNAMIGUANFUHECAILIAO,HUOKEZUOWEIZUIHAODEDIANJIJIEMIANCAILIAO,ZAIZHUDUOCHUNENGHEDIANZIQIJIANDEDAOYINGYONG。DANGJIARESHI,TANNAMIGUANTONGGUOCUIHUAXIANGMOTIANDALOUYIYANGZAISHIMOXICENGSHANGKAISHIXIANGSHANGSHENGZHANG,TAMENJIANGLVYANGHUAWUCENGDINGQI,TONGZEZUOWEISANWEIFUHECAILIAODEYOULIANGJIDIANQI。DIANZIXIANWEIJINGTUXIANGXIANSHIDANBI、SHUANGBIHESANBINAMIGUANDOULAOLAODIQIANZAISHIMOXINEI,TONGSHIDIANCESHIXIANSHIZAIJIAOJIECHUDIANLIUKEWUZUKANGTONGGUO。

 

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