High-areal-capacity/power lithium metal microbattery configuration based on the mechanically flexible,ultra-lightweight,nanocellulose framework  

作　　者：Shaowen Li Ting Zhao Helin Wang Zhiqiao Wang Min Zhang Ahu Shao Jiacheng Liu Zhaohui Wang Yue Ma 

机构地区：[1]State Key Laboratory of Solidification Processing,Centre for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China [2]College of Materials Science and Engineering,Hunan University,Changsha 410082,China [3]The Faculty of Printing,Packaging Engineering and Digital Media Technology,Xi'an University of Technology,Xi'an 710048,China

出　　处：《Nano Research》2024年第9期8155-8162,共8页纳米研究（英文版）

基　　金：the financial support of the National Natural Science Foundation of China(Nos.52173229 and 52373229);the Natural Science Foundation of Shaanxi(Nos.2019KJXX-099 and 2023-JC-JQ-15);the Fundamental Research Funds for the Central Universities(Nos.3102019JC005 and D5000230114);the Key R&D Program of Shaanxi Province(No.2019ZDLGY04-05);the Outstanding Youth Scientist Foundation of Hunan Province(No.2021JJ10017).

摘　　要：The ubiquitous implementation of integrated microelectronics requires the on-chip power sources featured with the lightweight configuration design,high areal-capacity-loadings as well as facile reaction kinetics that beyond the current available microbattery prototypes.Herein,this study constructs a mechanically flexible,nanocellulose fiber(NCF)reinforced microbattery configuration,which consists of metal-organic frameworks(ZIF-8)modified NCF as the separator(MOF@NCF),the carbonized MOF@NCF as the metallic deposition substrate(c-MOF@NCF)as well as gradient-structured LiFePO4 particles infiltrated in the NCF matrix(LFP@NCF)as the cathode.The film-stacked,integrated NCF-based microbattery prototype not only achieves the facile reaction kinetics with homogenized,dendrite-free Li metal deposition at high-capacity-loadings(2 mAh·cm^(-2)),but also eliminates the necessary use of metallic current collector to maximize the electroactive mass ratio,which therefore enables the high energy density of 6.8 mWh·cm^(-2)at the power output of 1.36 mW·cm^(-2)as well as the robust cyclability upon various geometric flexing states.This study presents a quantum leap towards the facile reaction kinetics and multi-scale interfacial stability for the flexible microbattery construction that based on the sustainable utilization of bio-scaffolds.

关 键 词：NANOCELLULOSE MICROBATTERY mechanical flexible ULTRA-LIGHTWEIGHT high-areal-capacity 

分 类 号：O62[理学—有机化学]