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DOI	10.1039/d0ee00653j
	A scaling law to determine phase morphologies during ion intercalation
	Fraggedakis D.; Nadkarni N.; Gao T.; Zhou T.; Zhang Y.; Han Y.; Stephens R.M.; Shao-Horn Y.; Bazant M.Z.
发表日期	2020
ISSN	17545692
起始页码	2142
结束页码	2152
卷号	13 期号:7
英文摘要	Driven phase separation in ion intercalation materials is known to result in different non-equilibrium phase morphologies, such as intercalation waves and shrinking-core structures, but the mechanisms of pattern selection are poorly understood. Here, based on the idea that the coarsening of the slowest phase is the rate limiting step, we introduce a scaling law that quantifies the transition from quasi-equilibrium intercalation-wave to diffusion-limited shrinking-core behavior. The scaling law is validated by phase-field simulations of single LixCoO2 particles, in situ optical imaging of single LixC6 particles undergoing transitions between stage 1 (x = 1) and 2 (x = 0.5) at different rates, and all the available literature data for single-particle imaging of LixCoO2, LixC6 and LixFePO4. The results are summarized in operational phase diagrams to guide simulations, experiments, and engineering applications of phase-separating active materials. Implications for Li-ion battery performance and degradation are discussed. © 2020 The Royal Society of Chemistry.
英文关键词	Coarsening; Cobalt compounds; Ions; Iron compounds; Lithium compounds; Lithium-ion batteries; Phase separation; Scaling laws; Diffusion limited; Engineering applications; Ion intercalation; Non-equilibrium phase; Pattern selection; Phase-field simulation; Quasi equilibrium; Rate-limiting steps; Phosphorus compounds; disequilibrium; ion exchange; particle size; phase transition; separation
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189611
作者单位	Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Shell International Exploration and Production Inc., Houston, TX 77082, United States; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Fraggedakis D.,Nadkarni N.,Gao T.,et al. A scaling law to determine phase morphologies during ion intercalation[J],2020,13(7).
APA	Fraggedakis D..,Nadkarni N..,Gao T..,Zhou T..,Zhang Y..,...&Bazant M.Z..(2020).A scaling law to determine phase morphologies during ion intercalation.Energy & Environmental Science,13(7).
MLA	Fraggedakis D.,et al."A scaling law to determine phase morphologies during ion intercalation".Energy & Environmental Science 13.7(2020).