Minimize the Electrode Concentration Polarization for High‐Power Lithium Batteries
Abstract High‐loading electrode is a prerequisite for achieving high energy density in industrial applications of lithium‐ion batteries. However, an increased loading leads to elevated battery polarization and reduced battery power density, which presents a significant technical bottleneck in the industry. The present study focuses on designing a rapid electrolyte diffusion pathway to diminish lithium concentration polarization for the high‐loading LiNi 0.83 Mn 0.12 Co 0.05 O 2 (NMC83) electrode by employing two layers of NMC83 materials with different sizes. This innovative architecture demonstrates exceptional rate performance even under challenging conditions with high‐loading and high‐rate. Additionally, the interrelationships between electrode structure, process route, porosity, and optimal thickness ratio between layers are discussed, providing valuable guidance for industrial promotion and application. The designed L‐Dry‐S electrode structure (coating large particles first and then small particles) effectively mitigates concentration polarization in the thick electrode, which is attributed to the fast electrolyte diffusion channel and the differential reaction speeds of NMC83 particles with varying sizes. The knowledge from this work is broadly applicable to other material systems.
Authors
- Xiaoping Ouyang (ORCID: https://orcid.org/0000-0001-8474-2869)
- Liewu Li (ORCID: https://orcid.org/0000-0001-8828-886X)
- Feng Pan (ORCID: https://orcid.org/0000-0002-1362-4336)
- Jiangtao Hu (ORCID: https://orcid.org/0000-0002-2725-7581)
- Biwei Xiao (ORCID: https://orcid.org/0000-0001-7750-8855)
- Xiangzhong Ren (ORCID: https://orcid.org/0000-0002-3197-1227)
- Yonglong Li (ORCID: https://orcid.org/0000-0002-4367-7375)
- Qianling Zhang (ORCID: https://orcid.org/0000-0001-6942-3958)
- Hongbin Wang (ORCID: https://orcid.org/0000-0002-9828-9054)
- Jing Chen (ORCID: https://orcid.org/0000-0001-7358-4949)
- Hao Li (ORCID: https://orcid.org/0000-0003-4316-1253)
- Weibin Chen (ORCID: https://orcid.org/0000-0003-1514-4149)
- Jianhong Liu (ORCID: https://orcid.org/0009-0007-2010-6901)
- Kai Wang (ORCID: https://orcid.org/0000-0002-9682-0710)
Institutions
- Sun Yat-sen University (CN)
- Shenzhen University (CN)
- General Research Institute for Nonferrous Metals (China) (CN)
- Peking University Shenzhen Hospital (CN)
- Grinm Advanced Materials (China) (CN)
- Xiangtan University (CN)
- The University of Tokyo (JP)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2024-09-05
- DOI
- https://doi.org/10.1002/adfm.202410926
- Citations
- 32
- Primary Topic
- Advancements in Battery Materials
- Type
- article
- Field-Weighted Citation Impact
- 6.68
Funders
- National Natural Science Foundation of China
- Guangdong Science and Technology Department
- Shenzhen Environmental Science and New Energy Technology Engineering Laboratory
- Shenzhen Science and Technology Innovation Program
- Basic and Applied Basic Research Foundation of Guangdong Province