Journal
ENERGY STORAGE MATERIALS
Volume 53, Issue -, Pages 444-452Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2022.09.026
Keywords
2D nanomaterials; Electrode processing; Shearing; Energy storage; Pseudocapacitive kinetics
Funding
- Australian Research Council
- [FL180100029]
- [DE190100445]
- [DE220100746]
- [DP220103498]
Ask authors/readers for more resources
This study investigates the impact of shear processing on the electrochemical performance of 2D nanomaterial-based electrodes. It is found that high shear rate during processing can induce ordered structures in the electrodes, leading to improved pseudocapacitive kinetics. These findings highlight the importance of electrode processing for large-scale manufacturing of 2D nanomaterials.
Two-dimensional (2D) nanomaterials have been extensively pursued as functional electrodes in electrochemical energy storage devices. Numerous efforts have been devoted to improving the electrochemical performance by engineering the chemical composition and structure of 2D nanomaterials, while little attention was paid to optimizing their electrode manufacturing by wet processing techniques. Herein, we study how the shear processing impacts the electrochemical performance of 2D nanomaterial-based electrodes using graphene oxide/ polyaniline (GO/PANI) colloidal hydrogels as a model electrode slurry. The GO/PANI hydrogels are processed into reduced GO/PANI (RGO/PANI) membranes by blade casting followed by chemical reduction. The formation process and microstructure of the RGO/PANI membranes were revealed by rheology and synchrotron small-angle X-ray scattering. We find that a high shear rate in blade casting is favourable for inducing ordered alignment of the 2D nanosheet-like network structure of GO/PANI hydrogels, leading to the formation of stratified microstructure in the RGO/PANI membranes. The high shear-induced ordered structures greatly boost the pseudocapacitive kinetics of RGO/PANI membranes as flexible supercapacitor electrodes. Our findings highlight the significance of electrode processing of 2D nanomaterials for large-scale manufacturing for future industrial applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available