from chemistry to pack
Compaction Density, Silicon Anodes, and What’s Actually Confirmed Our 4th generation LFP post set out the core idea behind LFP “generations”: it’s overwhelmingly a compaction density story applied to the same LiFePO₄ crystal, not a chemistry change, with each generation defined by tighter particle grading, different precursor routes, and progressively higher powder/electrode packing density. 5th … Read more
What “Generation” Actually Means in Lithium Iron Phosphate Lithium iron phosphate (LFP) has spent the last five years closing the energy density gap with nickel-based chemistries, and almost none of that progress has come from changing the underlying LiFePO₄ crystal. Instead, the industry has been fighting a materials-processing battle centred on one metric: compaction density. … Read more
Battery recycling sits at the intersection of three converging pressures: a looming wave of end-of-life material, a structurally constrained primary supply chain, and a regulatory framework that is moving from voluntary to mandatory. Each of these alone would justify investment in recycling infrastructure. Together, they are driving one of the fastest-growing sectors in the battery … Read more
When comparing slitting methods it is important to consider: Goebel Type This is a cutting method in which the upper knife is fixed in the cutting position in advance, and the entire shaft is moved sideways by a specified amount of air pressure to bring it into contact with the lower knife. The thickness of … Read more
In order to reduce costs in the cell manufacturing process the electrodes are coated in widths far greater than any battery cell would use. Hence, after coating, drying and calendering it is necessary to cut the electrodes length wise into a usable width. It is really important that the resultant edges are cut cleanly, without … Read more
Burrs and wavy edges on cell electrodes can have serious consequences up to and including an internal short-circuit and thermal runaway. Hence it is important to understand the slitting process and under what conditions burrs and waviness occurs. Slitter Cutting Control Parameters There are basically three slitter cutting control parameters for the shear cut method, … Read more
Is it necessary to clean battery terminals before welding? This is a common question for those focused on battery production processes. Author Jerry Wan Laser cleaning of terminals is a critical step in the assembly of battery modules. It effectively removes surface impurities and creates optimal conditions for laser welding, which in turn enhances product … Read more
However we look at a battery pack design we end up with lots of cells being connected together. In parallel to increase the capacity and in series to increase the voltage. We end up with a complex system to manufacture and hence look for repeating patterns. These repeating patterns are important whether the pack is … Read more
The Q4/2023 breakdown of NMC vs LFP costs is interesting as a point in time regarding the full cost comparison and potential as well as the current competition between Europe vs. Chinese supply chains. Here we have a comparison pulled together by P3 Group. As stated, Chinese LFP cell manufacturers especially profit from: Overall there is a up to … Read more
In school, we learn that the voltage across circuit components in parallel is the same, and the current is split between them according to their resistances. For components in series, the current through each is equal and the voltage drops off. In a simple model, the total capacity of a battery pack with cells in … Read more