Strategies for approaching one hundred percent dense lithium-ion battery cathodes

Johnson, Alissa C.; Dunlop, A.J.; Kohlmeyer, Ryan R.; Kiggins, Chadd; Blake, Aaron J.; Singh, Sonika V.; Beale, Evan M.; Patra, Arghya; Yue, Xiujun; Cook, John B.

doi:10.1016/j.jpowsour.2022.231359

Cited by 4 publications

(6 citation statements)

References 42 publications

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“…Model prediction and state‐of‐art comparison. a) Model prediction up to 100 µm thick LCO with main literature results; [ 3,16,32,75,76 ] this work presents the highest areal capacity among all‐solid state, 100%‐active anode‐free batteries. b) Volumetric energy density comparison between all available LCO based battery technologies (thin‐film, composite all solid‐state and slurry).…”

Section: Discussionmentioning

confidence: 95%

“…After validating our 1D model using experimental data, it is possible to push the simulation results forward and consider higher cathode thickness, in order to estimate both the maximum capacity and power, deliverable for an optimal cell design. In Figure 4b, we report the evolution [3,16,32,75,76] this work presents the highest areal capacity among all-solid state, 100%-active anode-free batteries. b) Volumetric energy density comparison between all available LCO based battery technologies (thin-film, composite all solid-state and slurry).…”

Section: Discussionmentioning

confidence: 96%

“…Moreover, it ensures, in the case of monolithic cathode, the suppression of grains boundary, which has been shown to be the main limitation in solid state composite electrode. [ 16,17 ] Additionally, the lithium metal has been considered to be the best solution for decades, but in the last years the anode‐free solution gained in popularity. In fact, the lithium the cathode can intercalate is already present in the active material itself, that is to say, the lithium which is actually used during the charge/discharge process is only the lithium inside the active material and not the lithium of the anode layer.…”

Section: Introductionmentioning

confidence: 99%

“…In the concluding sections, we present prospective results for cathode thickness up to 100 µm, which are the highest proposed so far. [16,28] Moreover, starting from the insight on the interface accumulation obtained by means of physical simulation, we review the main strategy reported in literature to suppress it. Our results can be extended to other cell configurations: for example, to estimate performance of a single particle of given diameter, which serves to tailor optimal grain size and decouple effects related to grain boundaries and binder/additive in composite electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12] More recently, thick and dense all-electrochemicallyactive cathodes with controlled orientation and continuous architecture have been considered as one of the most promising options for the next battery generation. [13][14][15][16] This configuration pushes the cathode capacity to its theoretical limits, by elimination of binders and other additives. Moreover, it ensures, in the case of monolithic cathode, the suppression of grains boundary, which has been shown to be the main limitation in solid state composite electrode.…”

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confidence: 99%

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Minimal Architecture Lithium Batteries: Toward High Energy Density Storage Solutions

Cele

Franger

Lamy

et al. 2023

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The coupling of thick and dense cathodes with anode‐free lithium metal configuration is a promising path to enable the next generation of high energy density solid‐state batteries. In this work, LiCoO2 (30 µm)/LiPON/Ti is considered as a model system to study the correlation between fundamental electrode properties and cell electrochemical performance, and a physical model is proposed to understand the governing phenomena. The first cycle loss is demonstrated to be constant and independent of both cathode thickness and anode configuration, and only ascribed to the diffusion coefficient's abrupt fall at high lithium contents. Subsequent cycles achieve close to 100% coulombic efficiency. The examination of the effect of cathode thickness demonstrate a nearly linear correlation with areal specific capacity for sub‐100 µm LiCoO2 and 0.1 mA cm−2 current density. These findings bring new insights to better understand the energy density limiting factors and to suggest potential optimization approaches.

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Section: Discussionmentioning

confidence: 95%