from chemistry to pack
Tubular lead acid batteries have long stood as a symbol of endurance, simplicity and affordability. They shaped the stationary energy storage landscape by offering deep cycle life and rugged operation. Yet a new wave of tubular design is emerging that could redefine the future: tubular redox flow batteries. Ary L. C. Assunção, DSc. reviews this … Read more
Molicel, the Taiwan-based manufacturer known for producing some of the most trusted high-power lithium-ion cells, is expanding its 21700 product line. Long a favourite in motorsport, drones and aerospace, Molicel is now building a broader portfolio to serve a wider range of performance and energy demands. Their current roadmap outlines three distinct 21700 series: the … Read more
In the battery application world everyone is always looking for power vs energy density. Wanting the maximum of both. However, as we know from a comparison of power vs energy cell design it is nearly impossible to have both. In simple terms the energy cell has thicker layers of active material, thinner current collectors and … Read more
AION Engineering INC Cylindrical cells are widely recognized as the most suitable format for high-speed roll-to-roll production, offering scalability and manufacturing efficiency. However, despite their structural advantages, thermal management remains a critical design challenge, especially under high-power operating conditions. Cylindrical cells are widely recognized as the most suitable format for high-speed roll-to-roll production, offering scalability … Read more
AION Engineering INC The performance of a lithium-ion cell is fundamentally governed by its material chemistry, particularly the composition of its cathode active material (CAM). In this article, we focus specifically on the role of nickel content in Nickel Manganese Cobalt Oxide (NMC) materials and how it correlates with energy density and power capability. Although … Read more
AION Engineering INC In previous discussions, we explored the relationship between cell capacity, C-rate, and electrode density. A key parameter influencing electrode density—and thus overall cell performance—is the particle size distribution (PSD) of the active material. Why PSD Matters The PSD of active materials directly impacts their tap density and compactibility—two critical factors that determine … Read more
AION Engineering INC The 1.3 g/Ah Rule: A Starting Point When designing lithium-ion battery cells, a commonly referenced benchmark is the electrolyte mass-to-capacity ratio, typically around 1.3 g/Ah. This serves as a useful starting point for many applications, providing a baseline for ensuring sufficient ion transport within the cell. Why C-Rate Matters However, this ratio … Read more
AION Engineering INC The Relationship Between Electrode Density and Peak Discharge C-Rate In lithium-ion cell manufacturing, the calendering process is often not considered a critical step. However, it directly influences key performance parameters, such as capacity, C-rate capability, and cycle life. Therefore, calendering plays an important role in optimizing cell performance. The Importance of Calendering … Read more
Battery cell ragone plot is power density vs energy density. A plot often used to compare chemistry. This plot needs to consider peak versus continuous power. The following plot is from the Cell Database. Note: as this is specification sheet data and the energy content is not established at the given discharge rate it is … Read more