What is it about?
Research group of Prof. Yat Li from University of California, Santa Cruz made progress on supercapacitors and published their work on Nano Lett.. Supercapacitors are charge (electrical energy) storage devices similar as lithium ion batteries. Enhancing the amount of charges supercapacitors are able to store during ultrafast charging has been a long-standing challenge. By designing and synthesizing a carbon electrode with different sized pores (from micrometers to nanometers) assembled in a hierarchical pattern, the group managed to push the ultrafast charge storage capability of a supercapacitor to a record-high level, reaching 235.9±7.5 F g–1 at 500 A g–1. The reasons for such the drastic performance improvement lie in ultrahigh surface area (~3000 m2 g–1), facilitated ion diffusion and electron transport.
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Why is it important?
It renders the possibility to shorten the charging time of your phone with equal performance as now.
Perspectives
This material has potential in serving as a catalyst for fuel cells or carbon dioxide reduction.
Dr Tianyu Liu
Virginia Polytechnic Institute and State University
Read the Original
This page is a summary of: Multiscale Pore Network Boosts Capacitance of Carbon Electrodes for Ultrafast Charging, Nano Letters, April 2017, American Chemical Society (ACS),
DOI: 10.1021/acs.nanolett.7b00533.
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