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Title: Na-Ion Intercalation and Charge Storage Mechanism in 2D Vanadium Carbide

Abstract

Two-dimensional vanadium carbide MXene containing surface functional groups (denoted as V2CTx, where Tx are surface functional groups) was synthesized and studied as anode material for Na-ion batteries. V2CTx anode exhibits reversible charge storage with good cycling stability and high rate capability through electrochemical test. The charge storage mechanism of V2CTx material during Na+ intercalation/deintercalation and the redox reaction of vanadium were studied using a combination of synchrotron based X-ray diffraction (XRD), hard X-ray absorption near edge spectroscopy (XANES) and soft X-ray absorption spectroscopy (sXAS). Experimental evidence of a major contribution of redox reaction of vanadium to the charge storage and the reversible capacity of V2CTx during sodiation/desodiation process have been provided through V K-edge XANES and V L2,3-edge sXAS results. A correlation between the CO32- content and Na+ intercalation/deintercalation states in the V2CTx electrode observed from C and O K-edge in sXAS results imply that some additional charge storage reactions may take place between the Na+-intercalated V2CTx and the carbonate based non-aqueous electrolyte. The results of this study will provide valuable information for the further studies on V2CTx as anode material for Na-ion batteries and capacitors.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [1];  [5];  [1]
  1. Chemistry Division, Brookhaven National Laboratory, Upton NY 11973 USA
  2. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley CA 94720 USA
  3. X-Ray Science Division, Argonne National Laboratory, Argonne IL 60439 USA
  4. Institute of Physics, Chinese Academy of Science, Beijing 100190 China
  5. Department of Material Science and Engineering, A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia PA 19104 USA
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology; USDOE Office of Science - Energy Frontier Research Center - Fluid Interface Reactions, Structures and Transport (FIRST)
OSTI Identifier:
1415478
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Advanced Energy Materials; Journal Volume: 7; Journal Issue: 20
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; MXene; X-ray absorption; charge storage; sodium-ion battery; spectroscopy; vanadium carbide

Citation Formats

Bak, Seong-Min, Qiao, Ruimin, Yang, Wanli, Lee, Sungsik, Yu, Xiqian, Anasori, Babak, Lee, Hungsui, Gogotsi, Yury, and Yang, Xiao-Qing. Na-Ion Intercalation and Charge Storage Mechanism in 2D Vanadium Carbide. United States: N. p., 2017. Web. doi:10.1002/aenm.201700959.
Bak, Seong-Min, Qiao, Ruimin, Yang, Wanli, Lee, Sungsik, Yu, Xiqian, Anasori, Babak, Lee, Hungsui, Gogotsi, Yury, & Yang, Xiao-Qing. Na-Ion Intercalation and Charge Storage Mechanism in 2D Vanadium Carbide. United States. doi:10.1002/aenm.201700959.
Bak, Seong-Min, Qiao, Ruimin, Yang, Wanli, Lee, Sungsik, Yu, Xiqian, Anasori, Babak, Lee, Hungsui, Gogotsi, Yury, and Yang, Xiao-Qing. 2017. "Na-Ion Intercalation and Charge Storage Mechanism in 2D Vanadium Carbide". United States. doi:10.1002/aenm.201700959.
@article{osti_1415478,
title = {Na-Ion Intercalation and Charge Storage Mechanism in 2D Vanadium Carbide},
author = {Bak, Seong-Min and Qiao, Ruimin and Yang, Wanli and Lee, Sungsik and Yu, Xiqian and Anasori, Babak and Lee, Hungsui and Gogotsi, Yury and Yang, Xiao-Qing},
abstractNote = {Two-dimensional vanadium carbide MXene containing surface functional groups (denoted as V2CTx, where Tx are surface functional groups) was synthesized and studied as anode material for Na-ion batteries. V2CTx anode exhibits reversible charge storage with good cycling stability and high rate capability through electrochemical test. The charge storage mechanism of V2CTx material during Na+ intercalation/deintercalation and the redox reaction of vanadium were studied using a combination of synchrotron based X-ray diffraction (XRD), hard X-ray absorption near edge spectroscopy (XANES) and soft X-ray absorption spectroscopy (sXAS). Experimental evidence of a major contribution of redox reaction of vanadium to the charge storage and the reversible capacity of V2CTx during sodiation/desodiation process have been provided through V K-edge XANES and V L2,3-edge sXAS results. A correlation between the CO32- content and Na+ intercalation/deintercalation states in the V2CTx electrode observed from C and O K-edge in sXAS results imply that some additional charge storage reactions may take place between the Na+-intercalated V2CTx and the carbonate based non-aqueous electrolyte. The results of this study will provide valuable information for the further studies on V2CTx as anode material for Na-ion batteries and capacitors.},
doi = {10.1002/aenm.201700959},
journal = {Advanced Energy Materials},
number = 20,
volume = 7,
place = {United States},
year = 2017,
month = 7
}
  • We synthesized two-dimensional vanadium carbide MXene containing surface functional groups (denoted as V 2CT x, where T x are surface functional groups) and studied as anode material for Na-ion batteries. V 2CT x anode exhibits reversible charge storage with good cycling stability and high rate capability through electrochemical test. Furthermore, the charge storage mechanism of V 2CT x material during Na + intercalation/deintercalation and the redox reaction of vanadium were studied using a combination of synchrotron based X-ray diffraction (XRD), hard X-ray absorption near edge spectroscopy (XANES) and soft X-ray absorption spectroscopy (sXAS). Experimental evidence of a major contribution ofmore » redox reaction of vanadium to the charge storage and the reversible capacity of V 2CT x during sodiation/desodiation process have been provided through V K-edge XANES and V L2,3-edge sXAS results. A correlation between the CO 3 2- content and Na + intercalation/deintercalation states in the V 2CT x electrode observed from C and O K-edge in sXAS results imply that some additional charge storage reactions may take place between the Na +-intercalated V 2CT x and the carbonate based non-aqueous electrolyte. Our results of this study will provide valuable information for the further studies on V 2CT x as anode material for Na-ion batteries and capacitors.« less
  • The intercalation of vanadium pentoxide by lithium ions leads to a change in optical properties, a process that is of value in thin-film electrochromic devices. In this study, films of V{sub 2}O{sub 5}, deposited on indium tin oxide (ITO) glass coupons by a sol-gel process, were challenged by increasing numbers of charge-discharge cycles ranging from 72 to 589 full cycles. The samples were characterized by x-ray photoelectron spectroscopy (XPS) and then examined in the deintercalated state by time-of-flight secondary ion mass spectroscopy (SIMS). XPS enabled measurement of the thickness and composition of the solid-electrolyte interface and provided evidence of themore » residual V{sup 4+} concentration within the top few nanometers of the surface. The SIMS profile gave direct information on the thickness of the films and on the thickness loss caused by rinsing the samples after the electrochemical exposure. Determination, by SIMS, of the concentration of lithium ions has enabled a correction to be made for the amount of inactive material within the electrochemically active region of the film. The SIMS depth profiles for lithium in the four samples are similar, with a marked buildup of Li at the interface with the ITO. This interphase zone had a thickness of {approx}27 nm and was electrochemically inactive, enabling a further correction to be made. Thus, by means of the XPS and the SIMS results the chemistry and thickness of the films could be fully characterized. The remaining inconsistency between capacity (between 35% and 100% of the anticipated charge) and number of cycles is ascribed to edge effects arising from the method used for production of the coupons.« less