A mapping of the physical and electrochemical properties of composite Lithium‐ion batteries anodes made from graphite, Sn and Si

SMREKAR, SACHA; BRACAMONTE, MARÍA VICTORIA; PRIMO, EMILIANO N.; LUQUE, GUILLERMINA L.; THOMAS, JORGE; BARRACO, DANIEL E.; LEIVA, EZEQUIEL

Batteries & Supercaps

Wiley-VCH

Año: 2020

2566-6223

owadays, there is an evident need to improve thecurrent Li-ion battery systems, in order to make them more reliable,durable and safe. Regarding this objective, the application ofcomposite materials ?based mainly on the combination of Si, Sn andcarbon? appears as a very promising alternative for future anodematerials. However, despite the great amount of publications dealingwith this topic, there is not a systematic study that allows interpretingand understanding how the combination of these materials affectsthe electrochemical performance of the anodes prepared with them.In light of this necessity, in this work we propose a straightforwardball-milling procedure to prepare Sn/Si/graphite composites withdifferent mass proportions of each material. For all compositions, asystematic study was performed in order to determine how eachmaterial affects the specific capacity, capacity fading and stabilitytowards a change in loading current. It is concluded that the materialprepared with Sn33Si