KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/kmitl/1

Browse

Settings

Author: search.filters.author.Katta, Vamsi KrishnaSubject: search.filters.subject.electrochemical performances

Search Results

Now showing 1 - 1 of 1
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Mixed Polyanion Na-Mn-V-P Glass–Ceramic Cathode Network: Improved Electrochemical Performance and Stability
    (2021-02-01)
    Katta, Vamsi Krishna
    ;
    Gandi, Suman
    ;
    Katari, Naresh Kumar
    ;
    Mekprasart, Wanichaya
    ;
    Pecharapa, Wisanu
    This investigation demonstrates the electrochemical performance of glass and glass–ceramic NaMn<inf>1−x</inf>(VO)<inf>x</inf>PO<inf>4</inf> (x = 0.1, 0.3, 05, 0.7 mol%, and labeled as NM<inf>1−x</inf>V<inf>x</inf>P) cathode material system via phase details, structural illustration, electronic conductivity, and reversible capacity, etc. Pro-crystal calculation analysis is used to monitor Na<sup>+</sup> ion pathways’ migration for as-precipitated NaMnPO<inf>4</inf>, Na<inf>2</inf>MnP<inf>2</inf>O<inf>7</inf>, and NaVO<inf>3</inf> phases. The highest conductivity is achieved (≈5.92 × 10<sup>−7</sup> S cm<sup>−1</sup>) for the glass–ceramic sample having x = 0.3 mol% (NM<inf>0.7</inf>V<inf>0.3</inf>P) due to the lowest charge transfer resistance (R<inf>ct</inf>). Electrochemical measurements of the best conducting sample using coin half-cell exhibit two distinct voltage plateaus at 2 and 2.9 V versus Na/Na<sup>+</sup>, facilitating the active centers in two directions. The cyclability test of best-conducting NM<inf>0.7</inf>V<inf>0.3</inf>P glass–ceramic network exhibits adequate reversible capacity up to 97% of the specific capacity even up to 50 cycles, which satisfies its superior stability for longer durations.
      2