Trevor Yates Adam McNeeley William Barrett GRA Abhinandh Sankar AC Dr Anastasios Angelopoulos University of Cincinnati Introduction Renewable energy must eventually replace fossil fuels in the power grid ID: 571837
Download Presentation The PPT/PDF document "Hybrid Carbon-Bismuth Nanoparticle Elect..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Hybrid Carbon-Bismuth Nanoparticle Electrodes for Energy Storage Applications
Trevor Yates, Adam McNeeley, William Barrett | GRA: Abhinandh Sankar, AC: Dr. Anastasios Angelopoulos | University of Cincinnati
Introduction
Renewable energy must eventually replace fossil fuels in the power gridRenewable energy must be stored efficiently for economic viabilityVanadium Redox Flow Batteries (VRFBs) are attractive for this application due to their high stabilityVRFBs lack sufficient power density, energy conversion efficiency, and rate capabilityRecent study improved energy conversion efficiency of VRFBs 11% by using Bismuth nanoparticles [1]Investigate Bismuth and Carbon nanoparticles in order to further improve VRFB performance
Procedure
Results
Conclusions
A trend is observed that Carbon stabilizes the Bismuth on the electrode Peak current increases as more layers are appliedStandard Layer-by-Layer Assembly is a better technique than directed Layer-by-Layer Assembly for this applicationCationic polymer is best used to separate Carbon from Bismuth nanoparticles
Acknowledgments
Future Research
Verify that Carbon stabilizes Bismuth
Investigate why Carbon stabilizes Bismuth peaksPerform microscopic characterization of Carbon and Bismuth nanoparticles Scale up the production of Bismuth nanoparticles and electrode assemblyQuantify the improvement on Vanadium Redox Flow Battery performance
Thank you NSF for funding this project: Grant Nos. DUE 0756921 and EEC 1004623.This material is based upon work supported by the National Science Foundation under Grant Nos. DUE 0756921 and EEC 1004623. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.Special thanks to Abhinandh Sankar and Dr. Anastasios Angelopoulos[1] Suarez, David J.; Gonzalez, Zoraida; et al. (2014). “Graphite Felt Modified with Bismuth Nanoparticles as Negative Electrode in a Vanadium Redox Flow Battery,” ChemSusChem, Vol.7, No. 3, pp. 914-918.
Objectives
Construct
electrocatalysts
with Layer-by-Layer Assembly
Use cyclic voltammetry in order to electrochemically characterize the
electocatalysts
Find whether Carbon adds stability to the peaks
Determine if an increase in layers leads to an increase in current density peaks Compare the performance of standard Layer-by-Layer Assembly (sLbL) and directed Layer-by-Layer Assembly (dLbL) in order to gain a better understanding of how Carbon and Bismuth nanoparticles interact
Each component dries two minutes and then washes in deionized water for one minuteNaOH washes away the Tin particles after all layers are appliedsLbL is stacked with Polymer, Carbon, Polymer, Bismuth-Tin complex for each layerdLbL is stacked with Polymer, Carbon, Bismuth-Tin complex for each layer
http://
reneweconomy.com.au/2012/smooth-sailing-for-wind-power-with-new-flow-battery-or-not-34476