Advanced Energy Materials
Advanced Energy Materials
5 years ago

3D Printing Sulfur Copolymer-Graphene Architectures for Li-S Batteries

3D Printing Sulfur Copolymer-Graphene Architectures for Li-S Batteries
Kai Shen, Shubin Yang, Bin Li, Hailong Mei, Junwei Ding
3D printing is becoming an efficient approach to facilely and accurately fabricate diverse complex architectures with broad applications. However, suitable inks and 3D print favorable architectures with high electrochemical performances for energy storage are still being explored. Here, sulfur copolymer-graphene architectures with well-designed periodic microlattices are 3D printed as a cathode for Li-S batteries using a suitable ink composed of sulfur particles, 1,3-diisopropenylbenzene (DIB), and condensed graphene oxide dispersion. Using thermal treatment, elemental sulfur can be reacted with DIB to produce sulfur copolymer, which can partially suppress the dissolution of polysulfides. Moreover, graphene in the architecture can provide high electrical conductivity for whole electrode. Hence, 3D printed sulfur copolymer-graphene architecture exhibits a high reversible capacity of 812.8 mA h g−1 and good cycle performance. Such a simple 3D printing approach can be further extended to construct many complex architectures for various energy storage devices. 3D printing is developed to construct sulfur copolymer-graphene architectures with well-designed microlattices for Li-S batteries. With the presence of sulfur copolymer, the printed architecture exhibits a high reversible capacity of 812.8 mA h g−1 and good cycle performance. Such a simple 3D printing protocol can be further extended to rapidly and accurately construct many complex architectures for various energy storage devices.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/aenm.201701527

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