Conductive Additive for Si/Mesoporous Carbon Anode for Li-Ion Batteries: Commercial Graphite vs Carbon Black C65. (7th August 2015)

• Record Type: Journal Article
• Authors: Rezqita, Arlavinda; Hamid, Raad; Schwarz, Sabine; Kronberger, Hermann; Trifonova, Atanaska
• Is Part Of: ECS transactions. Volume 66:Number 9(2015)
• Page Start: 17
• Page End: 27
• Publication Date: 2015-08-07
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/06609.0017ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : Silicon is a promising candidate for anodes in lithium-ion batteries (LIB) due to its high theoretical capacity. However, Si has low electrical conductivity (theoretical: 6.7 x 10 -4 S cm -1 ). Proper conductive additive is needed in order to improve the electrical conductivity of Si-based anodes. Here we focus on applying two commercial conductive addictives: graphite and carbon black Super C65 for silicon-mesoporous carbon (Si/MC) composite anodes. The structure and morphology of the electrodes were characterized by nitrogen adsorption, scanning electron microscopy (SEM), and focus ion beam/transmission electron microscopy (FIB/TEM). Furthermore, the electrochemical performance of the electrodes was characterized by cyclic voltammetry, galvanostatic charge/discharge tests, and impedance spectroscopy. In principles, our work could be effective for the choice of conductive additives to improve the electrical performance of Si/MC anodes.