Advanced Graphene-Based Binder-Free Electrodes for High-Performance Energy Storage.
The increasing demand for energy has triggered tremendous research effort for the development of high-performance and durable energy-storage devices. Advanced graphene-based electrodes with high electrical conductivity and ion accessibility can exhibit superior electrochemical performance in energy-storage devices. Among them, binder-free configurations can enhance the electron conductivity of the electrode, which leads to a higher capacity by avoiding the addition of non-conductive and inactive binders. Graphene, a 2D material, can be fabricated into a porous and flexible structure with an interconnected conductive network. Such a conductive structure is favorable for both electron and ion transport to the entire electrode surface. In this review, the main processes used to prepare binder-free graphene-based hybrids with high porosity and well-designed electron conductive networks are summarized. Then, the applications of free-standing binder-free graphene-based electrodes in energy-storage devices are discussed. Future research aspects with regard to overcoming the technological bottlenecks are also proposed.
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.|Collage of Chemical Engineering, Sichuan University, Chengdu, Sichuan, 610065, China.
Junyi
J
Ji
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Yang
Y
Li
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Wenchao
W
Peng
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Guoliang
G
Zhang
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
Fengbao
F
Zhang
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.|Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072, China.
Xiaobin
X
Fan
binder-free; energy storage; free-standing; graphene-based electrodes; porous structures