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锂氧气电池因其具有接近汽油的比能量密度而备受人们的关注。随着研究的深入,研究人员发现锂氧气电池的实用化面临着诸多挑战,如高的过电位、循环性能不佳、能量效率难以保持较高水平等。这一系列问题直接与负极的腐蚀、电解液的分解、正极材料的结构和ORR/OER催化剂催化活性有着非常紧密的联系。本文着重对近三年非水系锂氧气电池正极材料的研究进行综述,将锂氧气电池正极材料的研究分为碳基复合材料和无碳基复合材料进行概括,阐述了不同类别的催化剂和正极材料微观结构对锂氧气电池的充放电性能、循环稳定性、循环效率等性能的影响,并对后续的研究工作做一定的展望。
Lithium-oxygen batteries have drawn much attention for their specific energy density close to that of gasoline. With the deepening of the research, the researchers found that the practical application of lithium-oxygen battery faces many challenges, such as high over-potential, poor cycle performance, difficult to maintain high energy efficiency and so on. This series of problems directly with the corrosion of the anode, electrolyte decomposition, the structure of the cathode material and ORR / OER catalyst catalytic activity is closely linked. This paper focuses on the recent three years of non-aqueous lithium-oxygen battery cathode materials are reviewed, the lithium-oxygen battery cathode materials are divided into carbon-based composite materials and carbon-free composite materials are summarized, elaborated on different types of catalysts and cathode materials The influence of microstructure on the charge-discharge performance, cycle stability and cycle efficiency of lithium-oxygen batteries is also discussed. Some prospects for future research work are also discussed.