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Self-weakening in lithiated graphene electrodes

Evidence and attribution

Authority of statements

Prose sections below (Summary, Methods, Findings, etc.) are curated summaries of the publication identified by doi, title, and pdf_path in the front matter above. They are not new primary claims by this wiki.

For definitive numerical values, reaction schemes, and interpretations, use the peer-reviewed article (and optional records under normalized/papers/ when present)—not this page alone.

Summary

This Chemical Physics Letters article (Chem. Phys. Lett. 563, 58–62, 2013) studies mechanochemical coupling in lithiated graphene models relevant to Li-ion battery anodes. A reactive force field (ReaxFF-class) parametrization is used so that lithium uptake, stress, and fracture can be treated in the same large-scale MD framework. The work emphasizes that Li diffusion and mechanical stress are strongly coupled in these carbonaceous systems: Li tends to migrate toward crack tips, where accumulation can modulate crack growth and instability, linking atomistic behavior to electrode degradation and lifetime questions for graphene-based architectures. The local corpus PDF is a proof/galley (CP_Letter_LiC_galley.pdf); the version-of-record text and figures are defined by DOI 10.1016/j.cplett.2013.01.048. The self-weakening framing contrasts purely elastic estimates of graphene strength with scenarios where Li ingress plasticizes or destabilizes the carbon lattice at defects.

Methods

Corpus honesty (proof PDF). papers/CP_Letter_LiC_galley.pdf on this slug is an Elsevier author-query / proof bundle; normalized/extracts/2013yang-chemical-phy-self-weakening-lithiated_p1-2.txt contains highlights and production boilerplate, not the full Chem. Phys. Lett. Methods text. For reproducible MD settings (engine, timestep, ensemble, thermostat, system size, loading protocol), use paper:2013yang-chemical-phy-self-weakening-lithiated-2 (papers/Yang_Huang_Zhang_Raju_CPLetters_2013.pdf) or the DOI version-of-record.

1 — MD application (atomistic dynamics). This proof ingest does not reproduce runnable MD settings. For orientation only: the highlights reference atomistic molecular dynamics-style modeling where Li atoms evolve near crack tips in graphene electrodes, implying three-dimensional periodic boundary treatment in the VOR letter (N/A — not evidenced on this PDF). Ensemble / thermostat / timestep / duration / barostat / hydrostatic pressure: NVT/NVE/NPT labels are not recoverable from this proof PDF—use paper:2013yang-chemical-phy-self-weakening-lithiated-2 for the VOR Methods (NVT relaxation at 10 K is documented there, not here). Temperature: N/A — not stated in the proof highlights excerpt.

2 — Force-field training. N/A — not recoverable from the proof excerpt beyond the highlight line claiming development of a reactive model—see the VOR PDF on the sibling slug.

3 — Static QM / DFT-only. N/A — reactive MD is implied by the highlights, not DFT benchmarks, on this ingest path.

Findings

Corpus honesty. Quantitative fracture metrics, Li configurations, and mechanistic sentences on this page should not be sourced from the proof extract alone. For the letter’s quantitative \(\hat{K}_I\) results and Li tip motifs (X0–X3), use paper:2013yang-chemical-phy-self-weakening-lithiated-2.

Outcomes & mechanisms (highlights only). The Elsevier highlights list claims: a reactive FF for lithiated carbonaceous materials; strong coupling of Li diffusion and stress; energetically favorable Li migration toward crack tips; tip accumulation modulating crack instability; implications for graphene-based electrode lifetime.

Comparisons / sensitivity / limitations. N/A — not present in the proof excerpt beyond slogan-level bullets; read VOR article for authored comparisons and caveats.

Limitations

The local normalized extract on file is proof correspondence plus highlights only; quantitative values, figures, and full methodological detail should be taken from the published CPL article at the DOI above. Electrolyte composition and SEI formation are not resolved in the excerpts available in this corpus snapshot.

Relevance to group

van Duin and Raju coauthorship on Li–graphene mechanical coupling relevant to battery anode modeling.

Citations and evidence anchors

  • Highlights list (extract).
  • DOI taken from normalized bibliography venue string doi:10.1016/j.cplett.2013.01.048 in normalized/papers/2013yang-chemical-phy-self-weakening-lithiated.json.