Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

doi:10.1021/acsami.9b08656

	Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries
	Nie, Lu; Li, Yingfeng; Chen, Shaojie; Li, Ke; Huang, Yuanqi; Zhu, Yubo; Sun, Zhetao; Zhang, Jicong; He, Yingjie; Cui, Mengkui
刊名	ACS APPLIED MATERIALS & INTERFACES
	2019-09-04
卷号	11 期号:35 页码:32373
关键词	biofilm nanofibers separator lithium dendrite rate capability high-voltage cathode
ISSN号	1944-8244
DOI	10.1021/acsami.9b08656
文献子类	Article
英文摘要	Rechargeable batteries that combine high energy density with high power density are highly demanded. However, the wide utilization of lithium metal anode is limited by the uncontrollable dendrite growth, and the conventional lithium-ion batteries (LIBs) commonly suffer from low rate capability. Here, we for the first time develop a biofilm-coated separator for high-energy and high-power batteries. It reveals that the coating of Escherichia coli protein nanofibers can improve electrolyte wettability and lithium transference number and enhance adhesion between separators and electrodes. Thus, lithium dendrite growth is impeded because of the uniform distribution of the Li-ion flux. The modified separator also enables the stable cycling of high-voltage Li vertical bar Li1.2Mn0.6Ni0.2O2 (LNMO) cells at an extremely high rate of 20 C, delivering a high specific capacity of 83.1 mA h g(-1), which exceeds the conventional counterpart. In addition, the modified separator in the Li4Ti5O12 vertical bar LNMO full cell also exhibits a larger capacity of 68.2 mA h g(-1) at 10 C than the uncoated separator of 37.4 mA h g(-1), Such remarkable performances of the modified separators arise from the conformal, adhesive, and endurable coating of biofilm nanofibers. Our work opens up a new opportunity for protein-based biomaterials in practical application of high-energy and high-power batteries.
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26851]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Nie, Lu,Li, Yingfeng,Chen, Shaojie,et al. Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(35):32373.
APA	Nie, Lu.,Li, Yingfeng.,Chen, Shaojie.,Li, Ke.,Huang, Yuanqi.,...&Liu, Wei.(2019).Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries.ACS APPLIED MATERIALS & INTERFACES,11(35),32373.
MLA	Nie, Lu,et al."Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries".ACS APPLIED MATERIALS & INTERFACES 11.35(2019):32373.