Skip to main content
eScholarship
Open Access Publications from the University of California

Discovery of abnormal lithium-storage sites in molybdenum dioxide electrodes.

  • Author(s): Shon, Jeong Kuk
  • Lee, Hyo Sug
  • Park, Gwi Ok
  • Yoon, Jeongbae
  • Park, Eunjun
  • Park, Gyeong Su
  • Kong, Soo Sung
  • Jin, Mingshi
  • Choi, Jae-Man
  • Chang, Hyuk
  • Doo, Seokgwang
  • Kim, Ji Man
  • Yoon, Won-Sub
  • Pak, Chanho
  • Kim, Hansu
  • Stucky, Galen D
  • et al.

Published Web Location

https://www.nature.com/articles/ncomms11049
No data is associated with this publication.
Creative Commons 'BY-NC-ND' version 4.0 license
Abstract

Developing electrode materials with high-energy densities is important for the development of lithium-ion batteries. Here, we demonstrate a mesoporous molybdenum dioxide material with abnormal lithium-storage sites, which exhibits a discharge capacity of 1,814 mAh g(-1) for the first cycle, more than twice its theoretical value, and maintains its initial capacity after 50 cycles. Contrary to previous reports, we find that a mechanism for the high and reversible lithium-storage capacity of the mesoporous molybdenum dioxide electrode is not based on a conversion reaction. Insight into the electrochemical results, obtained by in situ X-ray absorption, scanning transmission electron microscopy analysis combined with electron energy loss spectroscopy and computational modelling indicates that the nanoscale pore engineering of this transition metal oxide enables an unexpected electrochemical mass storage reaction mechanism, and may provide a strategy for the design of cation storage materials for battery systems.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item