由纳米棒单元组成的介观TiNbO笼用作高倍率锂离子电池阳极。
Mesoscopic TiNbO cages comprised of nanorod units as high-rate lithium-ion battery anode.
作者信息
Zeng Jinfeng, Yang Le, Shao Ruiwen, Zhou Lei, Utetiwabo Wellars, Wang Saisai, Chen Renjie, Yang Wen
机构信息
Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
Beijing Advanced Innovation Center for Intelligent Robots and Systems and Institute of Convergence in Medicine and Engineering, Beijing Institute of Technology, 100081 Beijing, China.
出版信息
J Colloid Interface Sci. 2021 Oct 15;600:111-117. doi: 10.1016/j.jcis.2021.04.136. Epub 2021 Apr 30.
Benefiting from large tunnel structure, zero strain feature, and excellent pseudocapacitive performance, TiNbO was considered as a potential anode material for lithium-ion batteries (LIBs). Herein, TiNbO cages comprised of nanorod units were elaborately designed. The mesoscopic structure could effectively shorten the ion diffusion pathway, and the big central electrolyte reservoir relieves the concentration polarization of electrolyte. Moreover, the perforated pore feature guarantees competent contact between electrolyte and framework. As the anode of LIBs, the mesoscopic TiNbO cages deliver high reversible capacity (302.5 mAh/g) and rate capability (134.3 mAh/g at 30 A/g). This unique mesoscopic structure holds excellent potential for the electrode design of high-rate and long-life LIBs.
得益于大隧道结构、零应变特性和优异的赝电容性能，TiNbO被认为是锂离子电池（LIBs）的一种潜在负极材料。在此，精心设计了由纳米棒单元组成的TiNbO笼。这种介观结构能够有效缩短离子扩散路径，而大的中央电解质储存库缓解了电解质的浓差极化。此外，多孔特征确保了电解质与骨架之间有足够的接触。作为LIBs的负极，介观TiNbO笼具有高可逆容量（302.5 mAh/g）和倍率性能（30 A/g时为134.3 mAh/g）。这种独特的介观结构在高倍率和长寿命LIBs的电极设计方面具有巨大潜力。
Zotero 插件