from chemistry to pack
Since I know that this is a delicate topic, and many get confused, I will explain very briefly the nomenclature that I used. The IUPAC defines the anode as the electrode at which the oxidation occurs and the cathode as the electrode at which the reduction occurs. Therefore, in a galvanic cell, the negative electrode … Read more
After looking at the Challenges of Adding Silicon to Graphite Anodes it is important we look at options that solve the expansion of silicon anodes. To solve the severe volumetric expansion of silicon anodes—which can swell by 300% to 400% during charging—researchers and manufacturers rely on a combination of material engineering, chemical stabilization, and electrode … Read more
We all know the benefits but what are the challenges of adding silicon to graphite anodes? Benefits Just to be sure, let’s list the benefits: This post has been built based on the support of and sponsorship from: illumion, Custom Power, Quarto Technical Services, Eatron Technologies and About:Energy Challenges What are the technical challenges of adding silicon to graphite anodes? Volumetric Expansion … Read more
Authors: Jean E. Marshall, Alfred Madzvamuse, Akash Ratnayaka, Daniel Martin, Briséïs Mercadier, Kat Lukic, MahenderPeddi, Loubna Hdidou, Daniela Proprentner, Ieuan Ellis, Phillip Johns, Alexander Groombridge, Louis F. J. Piper Our latest publication with the Battery Materials and Cells group at WMG, University of Warwick is a capstone of an Innovate UK (IUK), Faraday Battery Challenge … Read more
Anode overhang is intentional as cathode overhang can result in: The issue is that extra anode material increases cost, weight and volume of the cell. Hence it is important to design the cell with the right amount of anode overhang taking into account the manufacturing process variability and quality control inspection capability. Here we look … Read more
Author: Dr. Hitoshi Nakamura Lithium-ion battery degradation usually starts at the anode. Sanyo was the first to use Carboxymethyl Cellulose (CMC) in anode slurry. At first, the life of the battery was short, and this was due to lumps. When there are lumps, the area is electrically insulated, so it is easy for SEI to … Read more
AION Engineering INC 1. Doctor Blade Coating Classification: Self-Metered Process Best For: Material screening, coin cells, basic R&D. Doctor blade coating is the foundational technique for battery research. It relies on a “self-metered” mechanism, meaning the final wet film thickness is determined by the geometric gap between the blade and the substrate, combined with the … Read more
AION Engineering INC Anode Electrode Porosity vs. Energy Density: The Turning Point in High-Energy Lithium-Ion Cells In lithium-ion cell design, one of the most critical relationships shaping performance is the link between anode porosity and energy density. As energy density increases, conventional design logic suggests reducing anode porosity to pack more active material into the … Read more
So what is the optimum calender roll temperature versus chemistry? We looked at a number of papers to offer an initial roll temperature and reasoning behind it. This is not extensive and as we have seen there are a number of other aspects that need to be considered such as energy use, LCA and capital … Read more
AION Engineering INC Role of Tabs in Current Flow During discharge, the current generated by electrochemical reactions flows through the sequence: Active Material → Conductive Additive → Current Collector → Tab The tab serves as the final current-carrying element in this path. Its current-carrying capacity is therefore a critical factor that affects both electrical efficiency … Read more