石墨烯在锂离子电池材料中大有可为

锂离子电池是一种典型的可充电电池,在储能技术领域占主导地位,应用极为广泛。近年来,科技发展对锂离子电池提出了更高要求,包括高能量密度、高安全稳定性等,驱动着电池材料与结构不断创新发展。研制石墨烯基复合正极负极材料,是极为活跃的方向。在此,对锂离子电池的结构、面临的突出挑战以及石墨烯基正极和负极材料研究前沿进行了介绍,重点围绕石墨烯增强电极材料电学特性的基本原理和复合材料制备技术作了阐述,也提出了未来发展动向。

Graphene enables a significant role in Li-ion battery materials

Li-ion battery, as a typical rechargeable battery, has been dominantly applied in the energy storage field. In recent years, the high-tech development has required much higher performance of Li-ion batteries than ever, including higher energy density, good safety and stability, etc, which motivates a broad set of investigations and innovations on the battery materials and structures. Among them, fabricating cathode and anode composites consisting of graphene has been of great interest. Herein, the structure of Li-ion battery, current challenges, and the cut-of-edge studies about the graphene-based cathode and anode materials, were comprehensively summarized. In particular, the enhancement mechanism of the graphene towards the electric properties of the electrodes, and the fabrication technologies of the composite electrodes were introduced. In addition, some potential developing directions of the Li-ion battery materials were proposed as well.