Surface Charge Engineering for Covalently Assembling Three-Dimensional MXene Network for All-Climate Sodium Ion Batteries

doi:10.1021/acsami.0c10605

CORC > 金属研究所 > 中国科学院金属研究所

	Surface Charge Engineering for Covalently Assembling Three-Dimensional MXene Network for All-Climate Sodium Ion Batteries
	Wang, Xin; Wang, Jie; Qin, Jinwen; Xie, Xi; Yang, Rui; Cao, Minhua
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020-09-02
卷号	12 期号:35 页码:39181-39194
DOI	10.1021/acsami.0c10605
英文摘要	MXenes, as excellent candidate anode materials for sodium ion batteries (SIBs), suffer from sluggish ion-diffusion kinetics resulting from the anchoring effect of the negatively charged functional groups on their surface on sodium ions. Herein, we introduce positively charged conductive polyaniline (PANI) to induce self-assembly of Ti3C2Tx MXenes into a three-dimensional PANI/Ti3C2Tx network. In this PANI/Ti3C2Tx network, PANI not only intercalates into Ti3C2Tx nanosheets to enlarge the interlayer spacing, but also promotes negative-to-positive transition of the surface charges of the Ti3C2Tx nanosheets, significantly improving ion-diffusion kinetics. Electrochemical test results further confirm the superb ion-diffusion kinetics of the PANI/Ti3C2Tx network. Meanwhile, a covalent interaction (Ti-N) between PANI and Ti3C2Tx, proved by X-ray photoelectron spectra (XPS) and X-ray absorption near-edge structure (XANES) tests, plays a key role in stabilizing this network structure. Therefore, PANI/Ti3C2Tx exhibits excellent sodium storage performances with a high specific capacity, superior rate performance and ultralong lifespan at high current density. More importantly, when operated at rigorous temperatures from +50 to -30 degrees C, PANI/Ti3C2Tx also exhibits good electrochemical performances. The present work presents a simple strategy for designing 3D porous MXene-based materials to realize high rate performance and all-climate energy storage device.
WOS记录号	WOS:000569268800035
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/155675]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Wang, Xin,Wang, Jie,Qin, Jinwen,et al. Surface Charge Engineering for Covalently Assembling Three-Dimensional MXene Network for All-Climate Sodium Ion Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(35):39181-39194.
APA	Wang, Xin,Wang, Jie,Qin, Jinwen,Xie, Xi,Yang, Rui,&Cao, Minhua.(2020).Surface Charge Engineering for Covalently Assembling Three-Dimensional MXene Network for All-Climate Sodium Ion Batteries.ACS APPLIED MATERIALS & INTERFACES,12(35),39181-39194.
MLA	Wang, Xin,et al."Surface Charge Engineering for Covalently Assembling Three-Dimensional MXene Network for All-Climate Sodium Ion Batteries".ACS APPLIED MATERIALS & INTERFACES 12.35(2020):39181-39194.