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Towards High-Performance Li-Rich Cathode Materials: from Morphology Design to Electronic Structure Modulation
Jing-Zhe Wan1, Chao Ma2, Jie-Sheng Chen1
1School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|December 16, 2024
Summary
Lithium-rich cathode materials offer high capacity but face challenges. This review explores mechanisms and strategies, like morphology design and electronic structure modulation, to improve their performance for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium-rich cathode materials (LRMs) are promising for high-capacity batteries (exceeding 250 mAh g⁻¹).
- Their capacity stems from transition metal (TM) ion redox and oxygen anion redox processes.
- Key challenges include poor rate capability and voltage instability (fading and hysteresis).
Purpose of the Study:
- To review recent mechanistic insights into lithium-rich cathode materials.
- To discuss advancements and strategies for enhancing LRM performance.
- To inspire future research directions for LRMs.
Main Methods:
- Literature review of recent advancements in LRMs.
- Analysis of strategies for performance improvement.
- Discussion of mechanisms from morphology to electronic structure.
Main Results:
- LRMs exhibit high reversible discharge capacity.
- Performance limitations include rate capability and voltage issues.
- Strategies span from material morphology to electronic structure tuning.
Conclusions:
- Understanding LRMs' mechanisms is crucial for overcoming limitations.
- Morphology and electronic structure modifications are key strategies.
- Continued research is vital for realizing the practical potential of LRMs.
