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Title: A review of recent research on nonequilibrium solid solution behavior in Li XFePO 4 [A review of nonequilibrium solid solution in Li XFePO 4]

Abstract

Li XFePO 4 (0 < X < 1) is one of the most well-studied cathode battery materials and is notable for its large miscibility gap. Although its phase-separating behaviors under equilibrium conditions have been well documented, recent research has shown that phase separation is suppressed at elevated rates of lithium insertion and removal. Specifically, Li XFePO 4 exhibits a nonequilibrium solid solution behavior at elevated cycling rates. This article reviews recent research on nonequilibrium solid solution in Li XFePO 4; these insights have been largely enabled by operando characterization techniques. As a result, such studies have not only unambiguously confirmed the existence of this solid solution, but also show how surface reaction and diffusion kinetics ultimately affect phase separation and other spatially nonuniform lithiation and delithiation behavior.

Authors:
 [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1477467
Report Number(s):
SAND-2018-2020J
Journal ID: ISSN 0167-2738; 660930
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
Solid State Ionics
Additional Journal Information:
Journal Volume: 323; Journal Issue: C; Journal ID: ISSN 0167-2738
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LiFePO4; Phase transformation; Solid solution; Operando characterization

Citation Formats

Li, Yiyang. A review of recent research on nonequilibrium solid solution behavior in LiXFePO4 [A review of nonequilibrium solid solution in LiXFePO4]. United States: N. p., 2018. Web. doi:10.1016/j.ssi.2018.05.026.
Li, Yiyang. A review of recent research on nonequilibrium solid solution behavior in LiXFePO4 [A review of nonequilibrium solid solution in LiXFePO4]. United States. doi:10.1016/j.ssi.2018.05.026.
Li, Yiyang. Fri . "A review of recent research on nonequilibrium solid solution behavior in LiXFePO4 [A review of nonequilibrium solid solution in LiXFePO4]". United States. doi:10.1016/j.ssi.2018.05.026. https://www.osti.gov/servlets/purl/1477467.
@article{osti_1477467,
title = {A review of recent research on nonequilibrium solid solution behavior in LiXFePO4 [A review of nonequilibrium solid solution in LiXFePO4]},
author = {Li, Yiyang},
abstractNote = {LiXFePO4 (0 < X < 1) is one of the most well-studied cathode battery materials and is notable for its large miscibility gap. Although its phase-separating behaviors under equilibrium conditions have been well documented, recent research has shown that phase separation is suppressed at elevated rates of lithium insertion and removal. Specifically, LiXFePO4 exhibits a nonequilibrium solid solution behavior at elevated cycling rates. This article reviews recent research on nonequilibrium solid solution in LiXFePO4; these insights have been largely enabled by operando characterization techniques. As a result, such studies have not only unambiguously confirmed the existence of this solid solution, but also show how surface reaction and diffusion kinetics ultimately affect phase separation and other spatially nonuniform lithiation and delithiation behavior.},
doi = {10.1016/j.ssi.2018.05.026},
journal = {Solid State Ionics},
number = C,
volume = 323,
place = {United States},
year = {2018},
month = {6}
}

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