What does this research mean for the field?

Parasitic lithium plating and stripping on stainless steel components in symmetric coin cells confounds standard performance metrics, leading to significant directional biases in cycle life assessments. Novelty: ClaimNovelty.CONTRADICTORY. Consensus alignment: ConsensusAlignment.CHALLENGES_CONSENSUS.

What question did this study set out to answer?

To investigate the occurrence and mechanisms of parasitic lithium plating on stainless steel components in symmetric and full coin cells and evaluate its impact on anode testing metrics.

August 27, 2026Batteries & Supercaps

Unveiling the Parasitic Lithium Deposition Puzzle: Implications for Symmetric Coin Cell Testing and Full‐Cell Stability

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Authors

YZYujian Zhang WYWenkai Yi XCXinlong Chen

Discussion

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Overview

Electrochemical evaluation demonstrates parasitic lithium deposition on stainless steel components in coin cells, suggesting significant distortion in battery cycling lifetime assessments.

Key Points

To investigate the occurrence and mechanisms of parasitic lithium plating on stainless steel components in symmetric and full coin cells and evaluate its impact on anode testing metrics.
Tested lithium symmetric coin cells (Li||Li) and full cells across varying current densities, areal capacities, and lithium foil thicknesses.
Analyzed the contribution of internal stainless steel cell components to active electrochemical reaction area expansion and lithium reversibility.
Parasitic lithium deposition occurs on stainless steel casing components, artificially enlarging the active reaction area, diluting effective current density, and reducing Coulombic reversibility.
High depth-of-cycling conditions systematically underestimate lithium anode cycle life, whereas shallow cycling overestimates cycle life in both symmetric and full coin cell configurations.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6a8fe9ad10c91c1e9262178f https://doi.org/10.1002/batt.70456

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August 27, 2026Batteries & Supercaps

Unveiling the Parasitic Lithium Deposition Puzzle: Implications for Symmetric Coin Cell Testing and Full‐Cell Stability

View Full Paper

Ask AI

Bookmark

Authors

YZYujian Zhang WYWenkai Yi XCXinlong Chen

Discussion

Member takes

Overview

Electrochemical evaluation demonstrates parasitic lithium deposition on stainless steel components in coin cells, suggesting significant distortion in battery cycling lifetime assessments.

Key Points

To investigate the occurrence and mechanisms of parasitic lithium plating on stainless steel components in symmetric and full coin cells and evaluate its impact on anode testing metrics.
Tested lithium symmetric coin cells (Li||Li) and full cells across varying current densities, areal capacities, and lithium foil thicknesses.
Analyzed the contribution of internal stainless steel cell components to active electrochemical reaction area expansion and lithium reversibility.
Parasitic lithium deposition occurs on stainless steel casing components, artificially enlarging the active reaction area, diluting effective current density, and reducing Coulombic reversibility.
High depth-of-cycling conditions systematically underestimate lithium anode cycle life, whereas shallow cycling overestimates cycle life in both symmetric and full coin cell configurations.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6a8fe9ad10c91c1e9262178f https://doi.org/10.1002/batt.70456

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