from chemistry to pack
A phone battery looks like a simple, sealed slab. Underneath that, five engineering problems are being fought at once, and each one constrains the others: what the electrodes are made of, how fast heat can be pulled out of a space the size of a credit card, how the charging circuit routes power without wasting … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. In yet another breakthrough Nuvvon has used its Solid Polymer Electrolyte (SPE) to combine a high silicon anode with a high nickel cathode. See below data set for 1Ah 40% silicon graphite vs NMC 811. Crucially, the SPE is able to accommodate traditional expansion issues associated with high silicon, without … 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
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
AION Engineering INC All cells discussed here are 18650 NMC cells. Balancing Energy Density and Safety Using silicon-based additives in the anode requires a delicate trade-off in cell design. While silicon increases the energy density, it also brings significant challenges for cell safety. Why More Space is Needed Silicon expands and contracts during charge-discharge cycling, … Read more
AION Engineering INC What is the N/P Ratio? The N/P ratio refers to the ratio between the effective capacity of the anode (negative electrode, N) and the cathode (positive electrode, P). In simple terms, it compares how much lithium the anode can store versus how much the cathode can provide. For a safe and reliable … Read more
AION Engineering INC In lithium-ion battery technology, optimizing cell performance and safety requires careful consideration of multiple parameters. Among these, the cut-off voltage is critical for balancing energy density and ensuring cell longevity and stability. While cathode chemistry often guides cell classification, variations in anode materials significantly impact the appropriate cut-off voltage setting. Influence of … Read more