4.7 Article

Effect of intercalated alkali ions in layered manganese oxide nanosheets as neutral electrochemical capacitors

Journal

CHEMICAL COMMUNICATIONS
Volume 55, Issue 9, Pages 1213-1216

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc08198k

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Funding

  1. Thailand Research Fund
  2. Vidyasirimedhi Institute of Science and Technology [RSA6180031]
  3. Energy Policy and Planning Office (EPPO), Ministry of Energy, Thailand

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New insight into the influence of Li+, Na+, and K+ cations between adjacent layers of birnessite-type manganese oxides (MnOx) towards the intercalation/deintercalation charge storage mechanism as a neutral electrochemical capacitor (1 M Na2SO4) is demonstrated. These structural cations play amajor role in both the kinetic electron transfer in a faradaic redox reaction and the accessibility of the compensating electrolyte ions. Li-MnOx shows the highest Mn utilization of 51% followed by Na-MnOx (40%) and K-MnOx (31%), respectively.

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