TY - JOUR
T1 - Mixed polyanion glass cathodes
T2 - Glass-state conversion reactions
AU - Kercher, A. K.
AU - Kolopus, J. A.
AU - Carroll, K. J.
AU - Unocic, R. R.
AU - Kirklin, S.
AU - Wolverton, C.
AU - Stooksbury, S. L.
AU - Boatner, L. A.
AU - Dudney, N. J.
N1 - Publisher Copyright:
© 2015 The Electrochemical Society. All rights reserved.
PY - 2016
Y1 - 2016
N2 - Mixed polyanion glasses can undergo glass-state conversion (GSC) reactions to provide an alternate class of high-capacity cathode materials. GSC reactions have been demonstrated in phosphate/vanadate glasses with Ag, Co, Cu, Fe, and Ni cations. These mixed polyanion glasses provided high capacity and good high power performance, but suffer from moderate voltages, large voltage hysteresis, and significant capacity fade with cycling. Details of the GSC reaction have been revealed by X-ray absorption spectroscopy, electron microscopy, and energy dispersive X-ray spectroscopy of ex situ cathodes at key states of charge. Using the Open Quantum Materials Database (OQMD), a computational thermodynamic model has been developed to predict the nearequilibrium voltages of glass-state conversion reactions in mixed polyanion glasses.
AB - Mixed polyanion glasses can undergo glass-state conversion (GSC) reactions to provide an alternate class of high-capacity cathode materials. GSC reactions have been demonstrated in phosphate/vanadate glasses with Ag, Co, Cu, Fe, and Ni cations. These mixed polyanion glasses provided high capacity and good high power performance, but suffer from moderate voltages, large voltage hysteresis, and significant capacity fade with cycling. Details of the GSC reaction have been revealed by X-ray absorption spectroscopy, electron microscopy, and energy dispersive X-ray spectroscopy of ex situ cathodes at key states of charge. Using the Open Quantum Materials Database (OQMD), a computational thermodynamic model has been developed to predict the nearequilibrium voltages of glass-state conversion reactions in mixed polyanion glasses.
UR - http://www.scopus.com/inward/record.url?scp=84949674232&partnerID=8YFLogxK
U2 - 10.1149/2.0381602jes
DO - 10.1149/2.0381602jes
M3 - Article
AN - SCOPUS:84949674232
SN - 0013-4651
VL - 163
SP - A131-A137
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
ER -