Work

Bio-nanotextured high aspect ratio micropillar arrays for high surface area energy storage devices

Year: 2015

Type: conference-paper

Abstract: This paper presents fabrication and characterization of bio-nanotextured hierarchical nickel oxide (NiO) supercapacitor electrodes. The hierarchical electrode structure is created through self-assembly of Tobacco mosaic viruses (TMVs) on high aspect-ratio micropillar arrays. Enhanced assembly of the bio-nanoparticles was achieved by increasing TMV solution accessibility into the deep microcavities of the pillar arrays. Electrochemical characterization of the hierarchical NiO supercapacitor electrodes revealed a 25-fold increase in charge capacity compared to a planar NiO, and demonstrated excellent cycle stability over 1500 charge/discharge cycles at 2 mA/cm 2 . This study leverages the unique bio-nanoscaffolds for small scale energy storage devices through further optimization of the hierarchical structures and wetting techniques for significant improvements in micro/nano scale energy storage devices.

Source: Journal of Physics Conference Series

DOI: 10.1088/1742-6596/660/1/012046

Authors: S Chu, K Gerasopoulos, R Ghodssi

Institution: University of Maryland, College Park

Language: English

Topic: Supercapacitor Materials and Fabrication

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

Funders: U.S. Department of Energy, Office of Science, Basic Energy Sciences, Energy Frontier Research Centers