Effect of Different Binders on Cyclic Performance of Si/C Anodes for Secondary Lithium-Ion Batteries

2017-09-28
Miser, Burcu
Livan, Pelin
Altınok, Sertaç
Eyövge, Cavit
Öztürk, Tayfur
Aydınol, Mehmet Kadri
Silicon is a strong anode material alternative to graphite in terms of its high energy and power capacity. On the other hand, the insertion of lithium atoms per silicon atom has some cons. The full lithiation of silicon results in a 400 % increase in volume. This drastic volume change causes diffusion-induced stress, which may lead to fragmentation, disintegration due to fractures and bonding problems of the current collectors with active materials, which lead to significant losses in capacity, and hence, poor cycle performance. Blending with elastomeric binders is one of the many approaches that has been proposed to overcome this problem of silicon based anode materials. In this study, electrodes were prepared using three commercial binder materials; polyvinylidene fluoride (PVDF), LA132 (polyacrylic latex) and PSBR100 (Modified Styrene-Butadiene Copolymer). LA 132 gave the best result. It yielded the highest first discharge capacity with the value of 3050 mAh.g -1 and even after 75 cycles, its capacity was around 210 mAh.g -1 . On the other hand, commercially used PVDF could stand only for three cycles.
Citation Formats
B. Miser, P. Livan, S. Altınok, C. Eyövge, T. Öztürk, and M. K. Aydınol, “Effect of Different Binders on Cyclic Performance of Si/C Anodes for Secondary Lithium-Ion Batteries,” presented at the 2nd International Symposium on Materials for Energy Storage and Conversion, 26 - 28 Eylül 2017, Kapadokya, Turkey, 2017, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/71029.