| 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 | |
| 2020-09-02 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
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| Volume | 12Issue:35Pages:39181-39194 |
| Abstract | 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. |
| DOI | 10.1021/acsami.0c10605 |
| WOS ID | WOS:000569268800035 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/155675 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation 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. |
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