from chemistry to pack
Lithium dendrites growing through a solid electrolyte do not behave like the diffuse, roughly uniform plating seen at a liquid electrolyte interface. In a polycrystalline ceramic or a cold-pressed sulfide pellet, the microstructure itself dictates where lithium goes: dendrites overwhelmingly nucleate and propagate along grain boundaries rather than through the bulk of individual grains, even … Read more
AION Engineering INC When you open the datasheet of a lithium-ion cell, one of the first values to catch your eye is the internal resistance. Typically, it sits there as a single, proud number: ACIR: 15 mOhm. Many engineers look at this number, validate the “quality” of the cell, and integrate it into their vehicle … Read more
AION Engineering INC No matter how optimized your internal cell structure, electrode design, or N/P ratio might be, the ultimate bottleneck in freezing temperatures is the electrolyte. Just as a flawless, 1,000-horsepower engine is utterly useless if the diesel in its fuel tank has frozen, a lithium-ion battery faces the exact same fate. The electrolyte … Read more
Author: Donal Finegan The answer is not as obvious as it might seem. Work led by Siddhartha Nanda and Hadi Khani published in Royal Society of Chemistry journal of Energy and Environmental Science, dives into the sources of heat generation for Triethyl Phosphate (TEP) with KFSI electrolyte and a potassiated graphite anode: Potassium (K)-ion batteries … Read more
Author: Sarah B. One of the most persistent misconceptions in the battery community is the belief that the HOMO–LUMO gap of a solvent defines the electrochemical stability window of an electrolyte. It doesn’t. And this misunderstanding is costing us — scientifically and financially. The energy diagram [1] illustrates the electrochemical stability window of an electrolyte … Read more
With Asahi Kasei licensing [1] their acetonitrile electrolyte for use in EAS Batteries LFP cells it is worth looking deeper at the technology and benefits. The flyer [2] has the following headlines: This post has been built based on the support of and sponsorship from: Resonate Testing Ltd, Quarto Technical Services, Eatron Technologies and About:Energy The flyer [2] presents data on … Read more
Among the two broad classes of solid electrolytes, inorganic ceramics currently offer the highest room-temperature conductivities (10⁻³–10⁻² S cm⁻¹) but demand high-temperature sintering, are mechanically brittle, and suffer from large interfacial impedance with composite electrode [1]. Solid polymer electrolytes (SPEs), such as polyethylene oxide (PEO)–LiTFSI, polycarbonates, and block-copolymer systems, trade some conductivity (10⁻⁵–10⁻³ S cm⁻¹ … Read more
Author: Professor Yijin Liu One of the slowest steps in battery manufacturing is electrolyte wetting. After you inject the liquid, you normally have to wait tens of hours for it to soak into the porous structure. Not exactly the most efficient process. But here’s the funny part—when we wash dishes, we never wait for water … Read more
We look at the battery value chain and see a huge number of steps. However, when we step into even one element such as cell components we see another expansion of the value chain. In the world of batteries this is interesting when we are looking for the value, where are the “Levi’s” and “Pick … 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