Quantifying the Correlation Between Capacity Utilization and Electrolyte Dosage for Ultrahigh‐Energy‐Density 769 Wh Kg <sup>−1</sup> Rechargeable Lithium Metal Batteries
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.
Authors
- Chen‐Zi Zhao (ORCID: https://orcid.org/0000-0002-1794-3086)
- Zhiyuan Dong (ORCID: https://orcid.org/0000-0003-0332-090X)
- Chong Yan (ORCID: https://orcid.org/0000-0001-9521-4981)
- Jia‐Qi Huang (ORCID: https://orcid.org/0000-0001-7394-9186)
- Jian Pei (ORCID: https://orcid.org/0000-0003-4053-1845)
- Yuyang Lu (ORCID: https://orcid.org/0000-0001-6168-0124)
- Qiang Zhang (ORCID: https://orcid.org/0000-0002-3929-1541)
- Hao Zhang (ORCID: https://orcid.org/0000-0003-3410-7829)
- Xiang Chen (ORCID: https://orcid.org/0000-0002-7686-6308)
- Jiang‐Kui Hu
- Junwei Zhao (ORCID: https://orcid.org/0000-0001-9161-235X)
- Peng Wu (ORCID: https://orcid.org/0009-0000-5389-7139)
- Xiangbiao Liao (ORCID: https://orcid.org/0009-0001-0819-6066)
- Zhenwei Zhu
- Xue‐Fei Wen
- Mengyao Wang (ORCID: https://orcid.org/0009-0004-5334-4568)
- Xue‐Kun Cao
- Jingyi Qiu
- Wenjie Meng
- Shuo Zhang
Institutions
- Beijing Institute of Technology (CN)
- Shanxi University (CN)
- Beijing Electronic Science and Technology Institute (CN)
- Laboratoire de physique des Solides (FR)
- Yangtze River Delta Physics Research Center (China) (CN)
- Advanced Energy Materials (United States) (US)
- Tsinghua University (CN)
Publication Details
- Journal
- Advanced Materials
- Published
- 2026-08-14
- DOI
- https://doi.org/10.1002/adma.74644
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Beijing Municipality
- National Key Research and Development Program of China