The aspiration to lessen the dependency on fossil fuels and the desire to secure a clean energy technology have resulted in endeavors toward developing electrochemical energy storage systems. While lithium-ion (Li-ion) batteries are the most dominating technology in the market, it is projected that the theoretical energy densities of current Li-ion batteries are not sufficient to meet the ever-increasing requirements of emerging technologies such as all electric-vehicles with much longer driving range. Furthermore, limited resources and increasing cost of materials needed in synthesizing key components remain a challenge for developing sustainable energy systems. Therefore, investigations of new materials/chemistries and novel architectures with earth abundant resources are required to go beyond incremental developments of existing batteries. In this regard, silicon or tin-based anodes and chalcogenide-based (sulfur and oxygen) cathodes have gained much attention for next-generation batteries because they have the potential of providing 5-10 times the specific energy of existing Li-ion batteries. However, further improvements of their performance such as cycle life and rate-performance are critically needed for these systems to be considered as a practically viable option. In this presentation, a brief discussion of scientific challenges and some latest developments in hybrid graphene-based electrodes for advanced batteries will be provided. In particular, several effective strategies developed in our lab to enhance energy/power density and improved cycling performance will be highlighted.<br/>

Hybrid graphene nanostructures for electrochemical energy storage

256th National Meeting (2018)

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