For Publishers
DiscoveryMetadataPeer reviewHostingPublishing
For Researchers
JoinPublishReviewCollect
Register
Blog
About
Search
Advanced search
My ScienceOpen
Search
For Publishers
For Researchers
Blog
About
7
views
28
references
 Top references
cited by
4
    
0 reviews
 Review
0
comments
 Comment
0
recommends
+1 Recommend
0 collections
    0
    shares
      74
      similar
       All similar
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Oxygen‐Rich Lithium Oxide Phases Formed at High Pressure for Potential Lithium–Air Battery Electrode

      research-article

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The lithium–air battery has great potential of achieving specific energy density comparable to that of gasoline. Several lithium oxide phases involved in the charge–discharge process greatly affect the overall performance of lithium–air batteries. One of the key issues is linked to the environmental oxygen‐rich conditions during battery cycling. Here, the theoretical prediction and experimental confirmation of new stable oxygen‐rich lithium oxides under high pressure conditions are reported. Three new high pressure oxide phases that form at high temperature and pressure are identified: Li 2O 3, LiO 2, and LiO 4. The LiO 2 and LiO 4 consist of a lithium layer sandwiched by an oxygen ring structure inherited from high pressure ε‐O 8 phase, while Li 2O 3 inherits the local arrangements from ambient LiO 2 and Li 2O 2 phases. These novel lithium oxides beyond the ambient Li 2O, Li 2O 2, and LiO 2 phases show great potential in improving battery design and performance in large battery applications under extreme conditions.

          Related collections

          Most cited references28

          • Record: found
          • Abstract: not found
          • Article: not found

          Generalized Gradient Approximation Made Simple.

          Gary H. Perdew, Ernzerhof, M Perdew … (1997)
          Article 0 comments Cited 2071 times – based on 0 reviews     Review now
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system

            A Drozdov, M I Eremets, I Troyan … (2015)
            A superconductor is a material that can conduct electricity without resistance below a superconducting transition temperature, Tc. The highest Tc that has been achieved to date is in the copper oxide system: 133 kelvin at ambient pressure and 164 kelvin at high pressures. As the nature of superconductivity in these materials is still not fully understood (they are not conventional superconductors), the prospects for achieving still higher transition temperatures by this route are not clear. In contrast, the Bardeen-Cooper-Schrieffer theory of conventional superconductivity gives a guide for achieving high Tc with no theoretical upper bound--all that is needed is a favourable combination of high-frequency phonons, strong electron-phonon coupling, and a high density of states. These conditions can in principle be fulfilled for metallic hydrogen and covalent compounds dominated by hydrogen, as hydrogen atoms provide the necessary high-frequency phonon modes as well as the strong electron-phonon coupling. Numerous calculations support this idea and have predicted transition temperatures in the range 50-235 kelvin for many hydrides, but only a moderate Tc of 17 kelvin has been observed experimentally. Here we investigate sulfur hydride, where a Tc of 80 kelvin has been predicted. We find that this system transforms to a metal at a pressure of approximately 90 gigapascals. On cooling, we see signatures of superconductivity: a sharp drop of the resistivity to zero and a decrease of the transition temperature with magnetic field, with magnetic susceptibility measurements confirming a Tc of 203 kelvin. Moreover, a pronounced isotope shift of Tc in sulfur deuteride is suggestive of an electron-phonon mechanism of superconductivity that is consistent with the Bardeen-Cooper-Schrieffer scenario. We argue that the phase responsible for high-Tc superconductivity in this system is likely to be H3S, formed from H2S by decomposition under pressure. These findings raise hope for the prospects for achieving room-temperature superconductivity in other hydrogen-based materials.
            Article 0 comments Cited 276 times – based on 0 reviews     Review now
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              A rechargeable room-temperature sodium superoxide (NaO2) battery.

              Pascal Hartmann, Conrad Bender, Miloš Vračar … (2013)
              In the search for room-temperature batteries with high energy densities, rechargeable metal-air (more precisely metal-oxygen) batteries are considered as particularly attractive owing to the simplicity of the underlying cell reaction at first glance. Atmospheric oxygen is used to form oxides during discharging, which-ideally-decompose reversibly during charging. Much work has been focused on aprotic Li-O(2) cells (mostly with carbonate-based electrolytes and Li(2)O(2) as a potential discharge product), where large overpotentials are observed and a complex cell chemistry is found. In fact, recent studies evidence that Li-O(2) cells suffer from irreversible electrolyte decomposition during cycling. Here we report on a Na-O(2) cell reversibly discharging/charging at very low overpotentials (< 200 mV) and current densities as high as 0.2 mA cm(-2) using a pure carbon cathode without an added catalyst. Crystalline sodium superoxide (NaO(2)) forms in a one-electron transfer step as a solid discharge product. This work demonstrates that substitution of lithium by sodium may offer an unexpected route towards rechargeable metal-air batteries.
              Article 0 comments Cited 209 times – based on 0 reviews     Review now
                Bookmark
                All references

                Author and article information

                Contributors
                Wenge Yang: yangwg@hpstar.ac.cn
                Duck Young Kim: duckyoung.kim@hpstar.ac.cn
                Journal
                Journal ID (nlm-ta): Adv Sci (Weinh)
                Journal ID (iso-abbrev): Adv Sci (Weinh)
                Journal ID (doi): 10.1002/(ISSN)2198-3844
                Journal ID (publisher-id): ADVS
                Title: Advanced Science
                Publisher: John Wiley and Sons Inc. (Hoboken )
                ISSN (Electronic): 2198-3844
                Publication date (Electronic): 19 May 2017
                Publication date Collection: September 2017
                Volume: 4
                Issue: 9 ( doiID: 10.1002/advs.v4.9 )
                Electronic Location Identifier: 1600453
                Affiliations
                [ 1 ] Center for High Pressure Science and Technology Advanced Research (HPSTAR) Shanghai 201203 China
                [ 2 ] High Pressure Synergetic Consortium (HPSynC) Geophysical Laboratory Carnegie Institution of Washington 9700 S Cass Avenue Argonne IL 60439 USA
                [ 3 ] Chemical Science & Engineering Division Argonne National Laboratory 9700 S Cass Avenue Argonne IL 60439 USA
                Author notes
                Article
                Publisher ID: ADVS337
                DOI: 10.1002/advs.201600453
                PMC ID: 5604394
                SO-VID: 17f0bfb1-e38c-4829-a415-430c6c6946c6
                Copyright © © 2017 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
                License:

                This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 18 November 2016
                Date revision received : 22 February 2017
                Page count
                Figures: 6, Tables: 0, Pages: 6, Words: 4536
                Funding
                Funded by: NSAF
                Award ID: U1530402
                Funded by: DOE‐BES X‐ray Scattering Core Program
                Award ID: DE‐FG02‐99ER45775
                Funded by: NSF
                Categories
                Subject: Full Paper
                Subject: Full Papers
                Custom metadata
                source-schema-version-number 2.0
                component-id advs337
                cover-date September 2017
                details-of-publishers-convertor Converter:WILEY_ML3GV2_TO_NLMPMC version:5.2.0 mode:remove_FC converted:19.09.2017

                Keywords: high pressure,lithium–air batteries,phase transition,redox procedure,superoxides
                Data availability:
                Keywords: high pressure, lithium–air batteries, phase transition, redox procedure, superoxides

                Comments

                Comment on this article

                scite_

                Similar content74

                See all similar

                Cited by4

                See all cited by

                Most referenced authors2,011

                See all reference authors