Capacity fade in high energy silicon-graphite electrodes for lithium-ion batteries

W M Dose; M J Piernas-Muñoz; V A Maroni; S E Trask; I Bloom; C S Johnson

doi:10.1039/c8cc00456k

Capacity fade in high energy silicon-graphite electrodes for lithium-ion batteries

Chem Commun (Camb). 2018 Apr 5;54(29):3586-3589. doi: 10.1039/c8cc00456k.

Authors

W M Dose¹, M J Piernas-Muñoz, V A Maroni, S E Trask, I Bloom, C S Johnson

Affiliation

¹ Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, USA. cjohnson@anl.gov.

PMID: 29431845
DOI: 10.1039/c8cc00456k

Abstract

A silicon-graphite blended anode is paired with a high capacity LiFePO4 reference/counter electrode to track irreversibility and lithium inventory. The LiFePO4 electrode provides a reliable, flat potential for dQ dV-1 analysis of LixSi and LixC electrochemical reactions. We relate this electrochemistry to the morphological and physical changes taking place.