PDF Publication Title:
Text from PDF Page: 047
Chapter 2: Sulfur positive electrode on Al collector – studies and important parameters determination 2.1. Motivation of the work The literature data review concerning the positive electrode development (see paragraph 1.3.1) shows that complicated methods are very often applied for the fabrication of carbon/sulfur composites, leading to sophisticated electrode architectures. However, it is often the case that gain in the performances is not relevant to the work implied during the fabrication process. In addition, many of these electrodes are characterized by low active mass loadings. Therefore, our work was based on very simple positive electrode, i.e. prepared in a simple way with the use of cheap and commercially available products, and bearing in mind the following aspects: • Practical electrode loading: ≥ 2.0 mg cm-2 or ≥ 3.35 mAh cm-2 • Relevance of the preparation methods toward practical improvements of performances and procedure scalability35 In the first part of this chapter, experiments concerning the electrodes preparation, cell assembly and testing are described. In the second part, we purely focus on development of positive electrodes on aluminum current collector. Comparative studies were done the electrodes coated on aluminum substrate, in order to better understand the system and determine the crucial parameters. In particular, we aimed at finding a correlation between the electrodes’ morphology, their electric properties (studied by Electrochemical Impedance Spectroscopy) and electrochemical performances. We also demonstrate how the conductive carbon and binder natures, as well as the electrode loading affect those properties. While carbon particles play an important role in providing an electronic percolation for the insulating sulfur particles, binder material is responsible for the electrode’s components cohesion, and its choice may be crucial for the final electrode morphology. Therefore, the importance of a binder was investigated, related to the connection of carbon and sulfur particles, their interaction with the current collector, and the mechanical properties of electrodes. 43 Chapter 2: S8 electrode on AluminumPDF Image | Accumulateur Lithium Soufre
PDF Search Title:
Accumulateur Lithium SoufreOriginal File Name Searched:
WALUS_2015_archivage.pdfDIY PDF Search: Google It | Yahoo | Bing
Sulfur Deposition on Carbon Nanofibers using Supercritical CO2 Sulfur Deposition on Carbon Nanofibers using Supercritical CO2. Gamma sulfur also known as mother of pearl sulfur and nacreous sulfur... More Info
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |