Journal
ENERGY STORAGE MATERIALS
Volume 34, Issue -, Pages 716-734Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2020.11.008
Keywords
Lithium-ion batteries; Cathode materials; Lithium-rich transition metal oxides; Electrochemistry; Improvement strategies
Funding
- Australian Rail Manufacturing Cooperative Research Centre (RMCRC) through the RMCRC 1.1.1 project
- Australian Research Council (ARC) through ARC Discovery Early Career Researcher Award [DE180100036]
- ARC Discovery Project [DP170100436, DP180102297, DP200101249]
- industry partner HEC Group Pty Ltd Australia
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The article summarizes various strategies for improving the performance of layered lithium-rich cathode materials for next-generation high-energy-density lithium-ion batteries. These strategies include surface engineering, elemental doping, composition optimization, structure engineering, and electrolyte additives, with emphasis on the effect and functional mechanism of corresponding techniques. Opportunities and challenges for designing high-performance lithium-rich cathode materials and bridging the gap between laboratory and practical applications are also discussed.
With the growing demand for high-energy-density lithium-ion batteries, layered lithium-rich cathode materials with high specific capacity and low cost have been widely regarded as one of the most attractive candidates for next-generation lithium-ion batteries. However, issues such as voltage decay, capacity loss and sluggish reaction kinetics have hindered their further commercialization for decades. Intensive investigations have been devoted to developing high-performance lithium-rich cathode materials, highlighting the importance of improvement strategies as a potential approach. Herein, we summarize various strategies for improving performances of layered lithium-rich cathode materials for next-generation high-energy-density lithium-ion batteries. These include surface engineering, elemental doping, composition optimization, structure engineering and electrolyte additives, with emphasis on the effect and functional mechanism of corresponding techniques. In the subsequent section, we illustrate opportunities and challenges for designing high-performance lithium-rich cathode materials and bridging the gap between the laboratory and practical applications.
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