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Strategies toward High-Performance Cathode Materials for Lithium-Oxygen Batteries
Kai-Xue Wang1, Qian-Cheng Zhu1,2, Jie-Sheng Chen1
1Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|May 12, 2018
Summary
Developing advanced cathode catalysts is key to improving rechargeable lithium-oxygen (Li-O2) batteries. Strategies like 3D structures and heteroatom doping enhance catalyst performance for stable Li-O2 batteries.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Rechargeable aprotic lithium-oxygen (Li-O2) batteries offer high theoretical energy densities, making them promising for next-generation energy storage.
- Current Li-O2 batteries face challenges including low capacity, poor cycle life, and low round-trip efficiency, hindering practical application.
- Effective cathode catalysts with high oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activities are crucial for overcoming these limitations.
Purpose of the Study:
- To review strategies for designing high-performance cathode catalysts for stable Li-O2 batteries.
- To highlight methods for enhancing ORR and OER activities, electronic conductivity, and stability of catalysts.
- To provide perspectives on optimizing battery components for improved electrochemical performance.
Main Methods:
- Review of rational selection of catalytic species.
- Discussion of incorporating 3D porous structures.
- Analysis of forming functional composites and heteroatom doping strategies.
Main Results:
- Successful design of high-performance cathode catalysts through various strategies.
- Demonstrated enhancement in ORR and OER activities, conductivity, and stability.
- Identified key approaches for stable and efficient Li-O2 battery operation.
Conclusions:
- Rational design of cathode catalysts is essential for advancing Li-O2 battery technology.
- Strategies such as 3D structures, composites, and doping significantly improve catalyst performance.
- Further optimization of battery components is necessary for realizing the full potential of Li-O2 batteries.
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