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http://dx.doi.org/10.14478/ace.2020.1061

Electrochemical Properties of Needle Coke through a Simple Carbon Coating Process for Lithium Ion Battery  

Hwang, Jin Ung (Korea Research Institute of Chemical Technology)
Lee, Jong Dae (Department of Chemical Engineering, Chungbuk National University)
Im, Ji Sun (Korea Research Institute of Chemical Technology)
Publication Information
Applied Chemistry for Engineering / v.31, no.5, 2020 , pp. 514-519 More about this Journal
Abstract
Graphite materials for lithium ion battery anode materials are the most commercially available due to their structural stability and low price. Recently, research efforts have been conducted on carbon coatings by improving side reactions at the edge site of carbon materials. The carbon coating process has classified into a CVD by chemical reaction, wet coating process with solvent and dry coating by mechanical impact. In this paper, the rapid crush/coating process was used to solve the problem of which only few parts of the carbon precursor (pitch) can be used and also environmental problems caused by solvent removal in the wet coating process. When the ratio of needle coke to pitch was 8 : 2 wt%, and the rapid crush/coating process was carried out, it was confirmed that the fracture surface was coated by pitch. The pitch-coated sample was treated at 2400 ℃ and 41.8% improvement in 10C/0.1C rate characteristic was observed. It is considered that the material simply manufactured through the simple crush/coating process can be used as an anode electrode material for a lithium ion battery.
Keywords
PFO-based pitch; Carbon coating; Rapid crush/coating process; Lithium ion battery;
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Times Cited By KSCI : 4  (Citation Analysis)
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