What question did this study set out to answer?

To investigate the thermodynamic and kinetic mechanisms governing the anisotropic morphology of phase boundaries during lithium insertion in nanoscale olivine electrode particles.

March 2, 2011The Journal of Physical Chemistry C

Anisotropic Phase Boundary Morphology in Nanoscale Olivine Electrode Particles

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Authors

MTMing TangWuhan University JBJames BelakLawrence Livermore National Laboratory MDM. DörrLawrence Livermore National Laboratory

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Implication

Phase-field simulation study reveals elastic strain and surface reaction kinetics drive phase boundary morphology in nanoscale olivine electrodes, highlighting limiting steps in battery charging.

Key Points

To investigate the thermodynamic and kinetic mechanisms governing the anisotropic morphology of phase boundaries during lithium insertion in nanoscale olivine electrode particles.
Conducted phase-field simulations of lithium-insertion-induced phase transformation in nanoscale olivine particles.
Modeled interactions among elastic energy from misfit strain between lithium-rich and lithium-poor phases, lithium surface-reaction kinetics, and directional lithium diffusion.
Anisotropic growth morphology is thermodynamically driven by elastic energy from lattice misfit strain and kinetically shaped by surface-reaction rates.
Inherent one-dimensional lithium diffusivity kinetically stabilizes the phase boundary morphology after insertion ends, enabling ex-situ structural observation.
Phase boundary morphology characteristics directly indicate the primary rate-limiting kinetic process during lithium intercalation.

Cite This Study

Tang et al. (2011) studied this question.

synapsesocial.com/papers/6a880c98bc5f9fd513bbf1e0 https://doi.org/10.1021/jp109628m

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Implication

Phase-field simulation study reveals elastic strain and surface reaction kinetics drive phase boundary morphology in nanoscale olivine electrodes, highlighting limiting steps in battery charging.

Anisotropic Phase Boundary Morphology in Nanoscale Olivine Electrode Particles

Discussion

Member takes

Implication

Key Points

Cite This Study

Anisotropic Phase Boundary Morphology in Nanoscale Olivine Electrode Particles

Discussion

Member takes

Implication

Key Points

Cite This Study

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