近期(qi)，國聯研(yan)究(jiu)院創新團隊在動力(li)電(dian)池領(ling)域研(yan)究(jiu)取得系(xi)列新進展，涉及(ji)高比(bi)能(neng)動力(li)電(dian)池安全(quan)(quan)技術研(yan)究(jiu)、高比(bi)容量富鋰材料本征(zheng)機(ji)理研(yan)究(jiu)以(yi)及(ji)固(gu)(gu)態電(dian)解質和全(quan)(quan)固(gu)(gu)態電(dian)池技術發展趨(qu)勢等(deng)方面(mian)。

在(zai)高(gao)比能(neng)動(dong)(dong)力(li)電(dian)(dian)(dian)池(chi)安全(quan)(quan)技術(shu)方面取(qu)得新進展。國聯研(yan)究(jiu)院創新團隊圍繞(rao)電(dian)(dian)(dian)動(dong)(dong)汽車(che)核心部件——高(gao)比能(neng)動(dong)(dong)力(li)電(dian)(dian)(dian)池(chi)，就行業(ye)亟待解決(jue)的(de)(de)(de)安全(quan)(quan)性問題開展了深入研(yan)究(jiu)，探明了電(dian)(dian)(dian)池(chi)正負(fu)極(ji)、集流體、隔膜等內部組件在(zai)微短(duan)路(lu)(lu)演變時的(de)(de)(de)失效(xiao)過程(cheng)，揭示了微短(duan)路(lu)(lu)不(bu)同階(jie)段時外部電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓和溫度等易監測信號與內部過程(cheng)的(de)(de)(de)構效(xiao)關(guan)系(xi)。相關(guan)研(yan)究(jiu)成果對電(dian)(dian)(dian)池(chi)制造(zao)端提升高(gao)比能(neng)鋰離子電(dian)(dian)(dian)池(chi)的(de)(de)(de)安全(quan)(quan)性有重要指導意義，為電(dian)(dian)(dian)池(chi)使用端優化電(dian)(dian)(dian)池(chi)管(guan)理系(xi)統(tong)，實現微短(duan)路(lu)(lu)的(de)(de)(de)早(zao)期(qi)識別、準確評估、及時預警等關(guan)鍵(jian)技術(shu)提供了重要參考(kao)依據，部分研(yan)究(jiu)成果發表于能(neng)源領域(yu)國際(ji)頂級學術(shu)期(qi)刊Nano Energy（IF=16.602），題目(mu)為“Unveiling Micro Internal Short Circuit Mechanism in a 60 Ah High-Energy-Density Li-ion Pouch Cell”。(文(wen)章鏈(lian)接：http://doi.org/10.1016/j.nanoen.2021.105908 )

在(zai)(zai)高比容量富(fu)鋰材料(liao)(liao)本征(zheng)機理(li)研(yan)究方面取得新(xin)突破(po)。富(fu)鋰錳(meng)基材料(liao)(liao)作為(wei)下一代鋰離(li)子電(dian)池正(zheng)極材料(liao)(liao)，尚存在(zai)(zai)循環過程中(zhong)(zhong)結構(gou)(gou)(gou)相變(bian)帶來的(de)容量衰減(jian)和中(zhong)(zhong)壓降低等問(wen)(wen)題。近期(qi)，國(guo)聯研(yan)究院研(yan)發團隊圍繞上述(shu)問(wen)(wen)題，結合第一性原(yuan)(yuan)理(li)計算(suan)與電(dian)化(hua)學分析，揭示了富(fu)鋰錳(meng)基材料(liao)(liao)內部(bu)多(duo)(duo)種(zhong)復(fu)雜局域結構(gou)(gou)(gou)，以及(ji)這些復(fu)雜結構(gou)(gou)(gou)對材料(liao)(liao)電(dian)化(hua)學行為(wei)特別是陰離(li)子氧化(hua)還原(yuan)(yuan)反(fan)應(ying)行為(wei)的(de)影響，如電(dian)化(hua)學活性、電(dian)壓衰減(jian)、陰離(li)子氧化(hua)還原(yuan)(yuan)在(zai)(zai)多(duo)(duo)電(dian)位分布所(suo)導致(zhi)的(de)電(dian)壓滯后現象等，完善了富(fu)鋰錳(meng)基材料(liao)(liao)的(de)本征(zheng)理(li)論(lun)體系。部(bu)分成果發表于(yu)能源領域國(guo)際頂級(ji)學術期(qi)刊Nano Energy（IF=16.602），題目為(wei)“Insight of reaction mechanism and anionic redox behavior for Li-rich and Mn-based oxide materials from local structure”。(文章鏈接(jie)：http://doi.org/10.1016/j.nanoen.2021.105812 )

在(zai)固(gu)態(tai)電(dian)解質(zhi)和全固(gu)態(tai)電(dian)池技術(shu)(shu)發展趨勢(shi)方面(mian)取得(de)重要分(fen)析(xi)(xi)成果。全固(gu)態(tai)鋰電(dian)池是(shi)(shi)受到國(guo)際(ji)(ji)關(guan)注(zhu)的(de)(de)(de)具(ju)有未來應用(yong)前景(jing)的(de)(de)(de)下一(yi)代電(dian)池，固(gu)態(tai)電(dian)解質(zhi)作(zuo)為其(qi)應用(yong)的(de)(de)(de)核心(xin)技術(shu)(shu)和難點技術(shu)(shu)，是(shi)(shi)目前的(de)(de)(de)研(yan)(yan)究熱點。其(qi)中，硫銀(yin)鍺礦型固(gu)態(tai)電(dian)解質(zhi)因(yin)其(qi)較(jiao)高的(de)(de)(de)離(li)子(zi)導(dao)電(dian)性(xing)(xing)和力(li)學性(xing)(xing)能(neng)具(ju)有較(jiao)強(qiang)的(de)(de)(de)發展潛力(li)。國(guo)聯研(yan)(yan)究院(yuan)創新團隊通過查(cha)閱分(fen)析(xi)(xi)大量的(de)(de)(de)技術(shu)(shu)文獻(xian)，結合自(zi)身在(zai)固(gu)態(tai)電(dian)池技術(shu)(shu)方面(mian)的(de)(de)(de)研(yan)(yan)究工作(zuo)，對硫銀(yin)鍺礦型固(gu)態(tai)電(dian)解質(zhi)的(de)(de)(de)改性(xing)(xing)合成及其(qi)對離(li)子(zi)導(dao)電(dian)性(xing)(xing)、穩定性(xing)(xing)和界面(mian)性(xing)(xing)能(neng)的(de)(de)(de)影響進行了(le)深入的(de)(de)(de)分(fen)析(xi)(xi)，并對其(qi)在(zai)全固(gu)態(tai)電(dian)池中的(de)(de)(de)應用(yong)做出研(yan)(yan)判。相關(guan)論文成果發表(biao)于能(neng)源領域國(guo)際(ji)(ji)頂級(ji)學術(shu)(shu)期刊Journal of Materials Chemistry A（IF=11.301），題目為“Research progress in Li-argyrodite-based solidstate electrolytes”。(文章鏈接：http://doi.org/10.1039/D0TA08472G )。