Investigation on the Effect of Binders on the Performance of Si-based Anodes of Lithium-ion Batteries
Date of Defense
Date of Graduation
Chemical and Paper Engineering
For the production of lithium-ion batteries with the different binders, a few things must be considered. The process of production has several steps. First is the preparation of the slurry with the composition of 70/10/20, 70% active material, 10% carbon black and 20% selected binder. Then, the bar coating of the slurry into a copper sheet is required. After drying in the oven, the sample in the cooper sheet, a few holes on the sample are made and the half-cell assembly. Lastly, the cell is assembled and its subject of rigorous testing to determine performance and stability; A few of the tests are but not limited to formation, cycle, and rate test. The assembly process occurs in a control area called glove box, this allowed for a more delicate and complete process for the battery. From the results obtained, we believed that the SCMC binder is the best overall.
For the process we sold our battery cells for $282 per kWh. Given our capacity, the yearly production of batteries is 416,696 cells, which works out to about 34,733 per month. Since the batch process uses 1000g per month (This process is supposed to be throughout the whole month, at the beginning of each month, the preparation of slurry is made, and the rest of the month is spent assembling the batteries). Our income per year was $1.76 MM USD and expenses including raw material costs, utilities and other operating costs was $1.51 MM USD per year.
The production of the batteries with the selected binder is a very profitable and promising one. There is enough room for error to still be a profitable process even if expenses were to become more expensive. The process also has room for possible improvements and increased profitability with a few modifications.
Rohen, Christopher, "Investigation on the Effect of Binders on the Performance of Si-based Anodes of Lithium-ion Batteries" (2022). Honors Theses. 3512.
Honors Thesis-Open Access