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Title: Open-Structured V 2 O 5 · n H 2 O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries

Authors:
 [1];  [2];  [1];  [3];  [1];  [3];  [3];  [4]; ORCiD logo [4]
  1. Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 China
  2. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA, Department of Chemistry and Biochemistry, Ohio State University, 100 West 18th Avenue Columbus OH 43210 USA
  3. Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081 China, Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081 China
  4. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue Lemont IL 60439 USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1401540
Grant/Contract Number:
AC02-06CH11357
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 14; Related Information: CHORUS Timestamp: 2017-10-20 17:09:17; Journal ID: ISSN 1614-6832
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Wang, Huali, Bi, Xuanxuan, Bai, Ying, Wu, Chuan, Gu, Sichen, Chen, Shi, Wu, Feng, Amine, Khalil, and Lu, Jun. Open-Structured V 2 O 5 · n H 2 O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries. Germany: N. p., 2017. Web. doi:10.1002/aenm.201602720.
Wang, Huali, Bi, Xuanxuan, Bai, Ying, Wu, Chuan, Gu, Sichen, Chen, Shi, Wu, Feng, Amine, Khalil, & Lu, Jun. Open-Structured V 2 O 5 · n H 2 O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries. Germany. doi:10.1002/aenm.201602720.
Wang, Huali, Bi, Xuanxuan, Bai, Ying, Wu, Chuan, Gu, Sichen, Chen, Shi, Wu, Feng, Amine, Khalil, and Lu, Jun. Fri . "Open-Structured V 2 O 5 · n H 2 O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries". Germany. doi:10.1002/aenm.201602720.
@article{osti_1401540,
title = {Open-Structured V 2 O 5 · n H 2 O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries},
author = {Wang, Huali and Bi, Xuanxuan and Bai, Ying and Wu, Chuan and Gu, Sichen and Chen, Shi and Wu, Feng and Amine, Khalil and Lu, Jun},
abstractNote = {},
doi = {10.1002/aenm.201602720},
journal = {Advanced Energy Materials},
number = 14,
volume = 7,
place = {Germany},
year = {Fri Apr 21 00:00:00 EDT 2017},
month = {Fri Apr 21 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1002/aenm.201602720

Citation Metrics:
Cited by: 4works
Citation information provided by
Web of Science

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  • The high-capacity cathode material V2O5·nH2O has attracted considerable attention for metal ion batteries due to the multielectron redox reaction during electrochemical processes. It has an expanded layer structure, which can host large ions or multivalent ions. However, structural instability and poor electronic and ionic conductivities greatly handicap its application. Here, in cell tests, self-assembly V2O5·nH2O nanoflakes shows excellent electrochemical performance with either monovalent or multivalent cation intercalation. They are directly grown on a 3D conductive stainless steel mesh substrate via a simple and green hydrothermal method. Well-layered nanoflakes are obtained after heat treatment at 300 °C (V2O5·0.3H2O). Nanoflakes with ultrathinmore » flower petals deliver a stable capacity of 250 mA h g-1 in a Li-ion cell, 110 mA h g-1 in a Na-ion cell, and 80 mA h g-1 in an Al-ion cell in their respective potential ranges (2.0–4.0 V for Li and Na-ion batteries and 0.1–2.5 V for Al-ion battery) after 100 cycles.« less
  • Functional multivalent intercalation cathodes represent one of the largest hurdles in the development of Mg batteries. While there are many reports of Mg cathodes, many times the evidence of intercalation chemistry is only circumstantial. In this work, direct evidence of Mg intercalation into a bilayer structure of V2O5·nH2O xerogel is confirmed, and the nature of the Mg intercalated species is reported. The interlayer spacing of V2O5·nH2O contracts upon Mg intercalation and expands for Mg deintercalation due to the strong electrostatic interaction between the divalent cation and the cathode. A combination of NMR, pair distribution function (PDF) analysis, and X-ray absorptionmore » near edge spectroscopy (XANES) confirmed reversible Mg insertion into the V2O5·nH2O material, and structural evolution of Mg intercalation leads to the formation of multiple new phases. Structures of V2O5·nH2O with Mg intercalation were further supported by the first principle simulations. A solvent cointercalated Mg in V2O5·nH2O is observed for the first time, and the 25Mg magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy was used to elucidate the structure obtained upon electrochemical cycling. Specifically, existence of a well-defined Mg–O environment is revealed for the Mg intercalated structures. Information reported here reveals the fundamental Mg ion intercalation mechanism in a bilayer structure of V2O5·nH2O material and provides insightful design metrics for future Mg cathodes.« less
  • Batteries based on Mg metal anode can promise much higher specific volumetric capacity and energy density compared to Li-ion systems and are, at the same time, safer and more cost-effective. While previous experimental reports have claimed reversible Mg intercalation into beyond Chevrel phase cathodes, they provide limited evidence of true Mg intercalation other than electrochemical data. Transmission electron microscopy techniques provide unique capabilities to directly image Mg intercalation and quantify the redox reaction within the cathode material. Here, we present a systematic study of Mg insertion into orthorhombic V 2O 5, combining aberration-corrected scanning transmission electron microscopy (STEM) imaging, electronmore » energy-loss spectroscopy (EELS), and energy-dispersive X-ray spectroscopy (EDX) analysis. We compare the results from an electrochemically cycled V 2O 5 cathode in a prospective full cell with Mg metal anode with a chemically synthesized MgV 2O 5 sample. Results suggest that the electrochemically cycled orthorhombic V 2O 5 cathode shows a local formation of the theoretically predicted ϵ-Mg0.5V2O5 phase; however, the intercalation levels of Mg are lower than predicted. Lastly, this phase is different from the chemically synthesized sample, which is found to represent the δ-MgV 2O 5 phase.« less
  • Vibrational relaxation rate constants k/sup Q//sub v/ are reported for HF (v = 5, 6, 7) collisions with eight quencher molecules Q = H/sub 2/, D/sub 2/, N/sub 2/, HF, CO/sub 2/, N/sub 2/O, CH/sub 4/, and C/sub 2/H/sub 6/, at 298 K under conditions of rotational equilibrium, using the fast flow infrared chemiluminescence technique. The rates are faster than had been reported by some investigators, the energy transfer probability P/sup Q//sub v/ ranging from P2/sub 5/ = 3.2 x 10/sup -3/ to P/sup HF//sub 7/ = 1.45. The rate constants rise with increasing v, i.e., n = 2.0 tomore » 8.4 for different Q in the v/sup n/ correlation. For all Q except H/sub 2/ and HF, V-V transfer is suggested, but the Lambert--Salter plots have different slopes for different Q. The data are compared with published measurements and with theory, the latter especially for Q = HF.« less
  • The syntheses and characterization of six monomeric rhenium thiolate complexes and the structural characterization of two useful rhenium starting materials are presented. Pyridine-2-thiol (2), 3,6-bis(dimethyl-tert-butylsilyl)pyridine-2-thiol (3), and pyrimidine-2-thiol (4) were reacted with [Bu{sub 4}N][ReOBr{sub 4}(H{sub 2}O)]{center_dot}2H{sub 2}O (5), [Bu{sub 4}N][ReOBr{sub 4}(OPPh{sub 3})] (6), [ReO{sub 2}(C{sub 5}H{sub 5}N){sub 4}], and [Re(N{sub 2}CO(C{sub 6}H{sub 5}))Cl{sub 2}(PPh{sub 3}){sub 2}] to give [ReO(C{sub 5}H{sub 4}NS){sub 3}] (7), [ReO(C{sub 8}H{sub 12}NSiS){sub 3}] (8), [ReO(OH)(C{sub 11}H{sub 20}NSi{sub 2}S){sub 2}] (9), [Re(N{sub 2}-CO(C{sub 6}H{sub 5}))Cl(PPh{sub 3}){sub 2}(C{sub 5}H{sub 4}NS)] (10), [ReO(C{sub 4}H{sub 3}N{sub 2}S){sub 3}] (11), and [Re(P(C{sub 6}H{sub 5}){sub 3})(C{sub 4}H{sub 3}N{sub 2}S){sub 3}] (12). Crystalmore » structures are reported for the compounds.« less