Quantifying the Correlation Between Capacity Utilization and Electrolyte Dosage for Ultrahigh-Energy-Density 769 Wh Kg^-1 Rechargeable Lithium Metal Batteries.

Authors

Shuo Zhang, Yuyang Lu, Chong Yan, Xiangbiao Liao, Chen-Zi Zhao, Jun-Wei Zhao, Zhiyuan Dong, Zhenwei Zhu, Wenjie Meng, Xue-Fei Wen, Peng Wu, Jian Pei, Meng-Yao Wang, Xue-Kun Cao, Jiang-Kui Hu, Xiang Chen, Jingyi Qiu, Hao Zhang, Jia-Qi Huang, Qiang Zhang

Published in

Advanced materials (Deerfield Beach, Fla.). Pages e74644. Aug 14, 2026. Epub Aug 14, 2026.

Abstract

The pursuit of high-energy-density lithium metal batteries requires simultaneous optimization of electrode architecture, electrolyte formulation, and interfacial stability. Here, we establish a fundamental parameter g(σ_e, D_e) that quantifies the relationship between electrolyte dosage and capacity utilization in ultra-thick electrodes (>100.0 µm), enabling precise determination of the minimal electrolyte requirement (1.1 g Ah^-1). Through systematic investigation of electrolyte compatibility with high-loading cathodes (> 10.0 mAh cm^-2) at high voltages (4.8 V), we develop an optimized formulation that forms stable interfaces while suppressing parasitic reactions. By integrating these advances-including a lightweight lithium metal anode-we demonstrate a 54.2 Ah pouch cell achieving 769 Wh kg^-1, representing a 150% improvement over conventional lithium-ion batteries. This work provides both theoretical and practical frameworks for engineering next-generation batteries through electrolyte minimization and interface stabilization.

PMID:
42598886
Bibliographic data and abstract were imported from PubMed on 14 Aug 2026.

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