Correlation Engine 2.0
Clear Search sequence regions

  • lithium (1)
  • phase (3)
  • SnO2 (6)
  • Sizes of these terms reflect their relevance to your search.

    We present herein that carbon nanospaces are the key reaction space to improve the reversibility of the reaction of SnO2 with Li-ions for lithium-ion batteries, demonstrated by both ex situ and in situ observations using high-resolution scanning transmission electron microscopy with electron energy loss spectroscopy. Conversion-type electrode materials, such as SnO2, undergo large volume changes and phase separation during the charge-discharge process, which lead to degradation in the battery performance. By confining the SnO2-Li reaction within carbon nanopores, the battery performance is improved. However, the exact phase changes of SnO2 in the nanospaces are unclear. By directly observing the electrodes during the charge-discharge process, the carbon walls are capable of preventing the expansion of SnO2 particles and minimizing the conversion-induced phase separation of Sn and Li2O on the sub-nanometer scale. Thus, nanoconfinement structures can effectively improve the reversibility performance of conversion-type electrode materials.


    Hiroo Notohara, Koki Urita, Isamu Moriguchi. Direct Evidence of Reversible SnO2-Li Reactions in Carbon Nanospaces. ACS applied materials & interfaces. 2023 Jun 28;15(25):30600-30605

    PMID: 37314754

    View Full Text