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Research Highlight | Center for Nanoscale Materials

Unconventional approach yields high-performance material for next-generation battery

In a paper published in Nature Communications, researchers synthesized a novel rock-salt electrode material by the unconventional approach of crystallization of amorphous nano-channeled Nb2O5 during initial cell cycling.

Scientific Achievement

A novel rock-salt electrode material has been produced by the unconventional approach of crystallization of amorphous nano-channeled Nb2O5 during initial cell cycling. The rock-salt electrode reversibly cycles three Li ions per Nb2O5,  yielding very high capacity with superb capacity stability over 400 cycles. The unique crystalline structure also permits fast charging.

Significance and Impact

The electrode has application for electric vehicles while the new approach is applicable to creating other new metal oxide electrodes.

Research Details

Transmission electron microscopy at CNM verified the structural transformation from amorphous to crystalline phase. Synchrotron X-ray diffraction at APS confirmed the structural change.

Work was performed, in part, at the Center for Nanoscale Materials (CNM) and Advanced Photon Source (APS).

DOI: 10.1038/s41563-022-01242-0

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About Argonne’s Center for Nanoscale Materials
The Center for Nanoscale Materials is one of the five DOE Nanoscale Science Research Centers, premier national user facilities for interdisciplinary research at the nanoscale supported by the DOE Office of Science. Together the NSRCs comprise a suite of complementary facilities that provide researchers with state-of-the-art capabilities to fabricate, process, characterize and model nanoscale materials, and constitute the largest infrastructure investment of the National Nanotechnology Initiative. The NSRCs are located at DOE’s Argonne, Brookhaven, Lawrence Berkeley, Oak Ridge, Sandia and Los Alamos National Laboratories. For more information about the DOE NSRCs, please visit https://​sci​ence​.osti​.gov/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​/​U​s​e​r​-​F​a​c​i​l​i​t​i​e​s​-​a​t​-​a​-​G​lance.

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