High Voltage Surface Degradation on Carbon Blacks in Lithium Ion Batteries

Reza Younesi

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

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.
Original languageEnglish
Publication date2014
Number of pages1
Publication statusPublished - 2014
EventGordon 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 201414 Mar 2014
http://www.grc.org/programs.aspx?year=2014&program=batteries

Conference

ConferenceGordon Research Conferences - Batteries: Advances in Characterization, Analysis, Theory and Modeling of Basic Processes
LocationFour Points Sheraton / Holiday Inn Express
CountryUnited States
CityVentura, CA
Period09/03/201414/03/2014
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