In order to increase the power density of Li-ion batteries, much research is focused on developing cathode materials that can operate at high voltages above 4.5 V with a high capacity, high cycling stability, and rate capability. However, at high voltages all the components of positive electrodes including carbon black (CB) additives have a potential risk of degradation. Though the weight percentage of CB in commercial batteries is generally very small, the volumetric amount and thus the surface area of CB compose a rather large part of a cathode due to its small particle size (≈ 50 nm) and high surface area. In this work, the performance of Super P in Li-ion cells at high voltages up to 4.9 V is studied using electrochemical measurements as well as surface characterizations.
|Number of pages||1|
|Publication status||Published - 2014|
|Event||Gordon Research Conferences - Batteries: Advances in Characterization, Analysis, Theory and Modeling of Basic Processes - Four Points Sheraton / Holiday Inn Express, Ventura, CA , United States|
Duration: 9 Mar 2014 → 14 Mar 2014
|Conference||Gordon Research Conferences - Batteries: Advances in Characterization, Analysis, Theory and Modeling of Basic Processes|
|Location||Four Points Sheraton / Holiday Inn Express|
|Period||09/03/2014 → 14/03/2014|