Summary of SusMat from Zhejiang University's Gaochao Professor's Team: 3D printing preparation of high-performance graphene-based energy dump materials

Research Background

The preparation of high-performance energy storage and conversion devices is an important way to realize low-cost, clean, safe and sustainable energy utilization

Article Introduction

Based on this, the team of Professor Xu Zhen and Gao Chao of Zhejiang University conducted a systematic analysis and overview of the latest research progress in 3D printing of graphene-based materials and their applications in energy storage devices

Figure 1 3D printing preparation of graphene-based energy storage and conversion devices

The main points of the article

Key point 1: The performance characteristics of printable ink

The DIW-based 3D printing technology uses a numerical control program to control the nozzle to deposit ink materials with specific rheological behavior at a specified position to achieve fine processing of the three-dimensional structure.

Figure 2 Performance characteristics of printable ink

Key point 2: Graphene-based ink preparation strategy

Graphene oxide (GO), as the most common precursor of graphene-based materials, can be dispersed in a variety of common solvents to form a stable colloidal dispersion

Figure 3 Preparation of printable ink materials by cross-linking between GO sheets

Figure 4 Auxiliary molding process to achieve graphene 3D printing processing

Point 3: 3D printing graphene-based energy dump materials

Thanks to the excellent physical and chemical properties of the graphene material itself and the high-precision and high-degree-of-freedom processing capabilities of the 3D printing technology for the device structure, the graphene-based energy storage and conversion devices prepared by 3D printing have significant performance advantages

Figure 5 3D printing preparation of graphene-based battery materials

In the field of supercapacitors, 3D printing technology can realize the effective design of cross-scale multi-level structures, greatly improve the transmission efficiency of ions and charges in electrode materials, and effectively improve the energy density and rate performance of capacitor materials under high loads.

Figure 6 3D printing preparation of graphene-based supercapacitor materials

In addition to energy storage devices such as batteries and supercapacitors, 3D printing technology's flexible design of structures and components also makes it has many applications in the fields of graphene-based photothermal conversion and electrothermal conversion materials

Figure 7 3D printing preparation of graphene-based electrothermal conversion materials

Prospects and prospects

3D printing has made good progress in the preparation of graphene-based energy dump devices, but there is still a certain gap to meet the actual application requirements