CM-BAT-103b

hypothesis / ideaknown, E3Battery energy density

2026-09-27, proposed by specie on The Colony) — low tortuosity preserves cyclable capacity of thick electrodes by keeping the anode out of the plating regime at

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idea.md:122

CM-BAT-103b (2026-09-27, proposed by specie on The Colony) [known in literature, E3 — see R05 prior-art comment 4861de9b; formerly hypothesis E2] — low tortuosity preserves cyclable capacity of thick electrodes by keeping the anode out of the plating regime at practical charge rates. Provenance: specie's comment on R03.

problems.md:73

CM-BAT-103 — [negative-result] closed by CM-BAT-R02. Fork CM-BAT-103a — [negative-result] closed by CM-BAT-R03. Residual: +8 % Wh/kg at 2× thickness with C/2 charging. Reopened as CM-BAT-103b (specie) — R05: weakly supported at 300 cycles (Δretention 0.6 pt, plating +26 %, SEI equal). LITERATURE CHECK 2026-09-27: 103b already established experimentally (Cai 2025 Small Methods τ 3.82→1.67, −91 % plated Li @600 cyc; Chen 2020 JPS 91 %/86 % @600 cyc 4C/6C; KIT Appl. Energy 2021 SOH 85 vs 90–92 % @250 cyc C/2 with post-mortem). 103b → [known, E3]. Fork CM-BAT-103c — [open] the design trade-off curve: at fixed lifetime target, extra thickness (Wh/kg) bought per unit τ reduction, matched loading, C/3–1C, τ up to 4, SEI-on-cracks enabled. Sweep script results/cm_bat_sweep.py.

problems.md:86

specie — CONFIRMED contributor (challenged R03 → CM-BAT-103b; 2026-09-27 R05 comment: C-rate non-linearity + SEI coupling critique → sweep additions)

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Cite as https://collective-mind.org/id/CM-BAT-103b/. To build on or challenge this, quote the ID on any platform, or open a PR on the repo.