Effect of Ball Milling and KOH Activation on Electrochemical Properties of Pitch-based Carbon Fibers

2015 ◽  
Vol 36 (10) ◽  
pp. 2464-2468
Author(s):  
Jung-Yun Choi ◽  
Sang Eun Shim ◽  
Soo-Jin Park
Keyword(s):  
Electrochemical Properties ◽  
Ball Milling ◽  
Carbon Fibers ◽  
Koh Activation

Physical and Electrochemical Properties of SiOx /C Composites Prepared by a Combination of Spray Pyrolysis and High Energy Ball Milling

2015 ◽  
Vol 1775 ◽  
pp. 7-12 ◽  
Author(s):  
Anara Molkenova ◽  
Izumi Taniguchi
Keyword(s):  
Electrochemical Properties ◽  
Spray Pyrolysis ◽  
Ball Milling ◽  
Ultrasonic Spray Pyrolysis ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Potential Range ◽  
Composite Powders ◽  
Ultrasonic Spray ◽  
Energy Ball

ABSTRACTSpray pyrolysis has been widely used to prepare homogeneous and uniform ceramic powders with high purity. In this study, we are proposing ultrasonic spray pyrolysis followed by heat treatment to produce SiOx/C composite powders, where sucrose was used as a carbon source. Furthermore, high energy ball milling of the as-prepared powders in the presence of acetylene black was conducted to activate its electrochemical properties by reducing the particle size and improving the functionalization of the SiOx composite particles. SiOx/C nanocomposite finally obtained at a sucrous concentration of 0.1 mol L-1 showed superior electrochemical properties, and the SiOx/C nanocomposite electrode delivered the first discharge and charge capacities of 1252 and 819 mAh g-1, respectively, with an initial columbic efficiency of 65% at a current density of 50 mAh g-1 in the potential range from 0.01 to 3 V versus Li/Li+.

Electrochemical Properties of Carbon-Coated NbO2 as a Negative Electrode for Lithium-Ion Batteries

2016 ◽  
Vol 724 ◽  
pp. 87-91 ◽  
Author(s):  
Chang Su Kim ◽  
Yong Hoon Cho ◽  
Kyoung Soo Park ◽  
Soon Ki Jeong ◽  
Yang Soo Kim
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Carbon Coating ◽  
Electrochemical Impedance ◽  
Active Material ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Transfer Resistance ◽  
Carbon Coated

We investigated the electrochemical properties of carbon-coated niobium dioxide (NbO2) as a negative electrode material for lithium-ion batteries. Carbon-coated NbO2 powders were synthesized by ball-milling using carbon nanotubes as the carbon source. The carbon-coated NbO2 samples were of smaller particle size compared to the pristine NbO2 samples. The carbon layers were coated non-uniformly on the NbO2 surface. The X-ray diffraction patterns confirmed that the inter-layer distances increased after carbon coating by ball-milling. This lead to decreased charge-transfer resistance, confirmed by electrochemical impedance spectroscopy, allowing electrons and lithium-ions to quickly transfer between the active material and electrolyte. Electrochemical performance, including capacity and initial coulombic efficiency, was therefore improved by carbon coating by ball-milling.

Study of structural and electrochemical properties of La2SrV2O9 perovskites prepared using ball-milling

2018 ◽  
Vol 449 ◽  
pp. 468-473 ◽  
Author(s):  
Gouthami Nallamuthu ◽  
Sakthivel Thangavel ◽  
Kiranpreethi Kirubakaran ◽  
Vinesh Vasudevan ◽  
Yuvaraj Sivalingam ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Ball Milling

Controlling the physical and electrochemical properties of block copolymer-based porous carbon fibers by pyrolysis temperature

2020 ◽  
Vol 5 (1) ◽  
pp. 153-165 ◽  
Author(s):  
Zhengping Zhou ◽  
Tianyu Liu ◽  
Assad U. Khan ◽  
Guoliang Liu
Keyword(s):  
Block Copolymer ◽  
Electrochemical Properties ◽  
Carbon Fibers ◽  
Porous Carbon ◽  
Pyrolysis Temperature ◽  
Processing Parameter ◽  
Important Processing

Pyrolysis temperature is an important processing parameter that determines the physical and electrochemical properties of block copolymer-based porous carbon fibers.

Structure and electrochemical properties of activated polyacrylonitrile based carbon fibers containing carbon nanotubes

2008 ◽  
Vol 185 (2) ◽  
pp. 676-684 ◽  
Author(s):  
Sudhakar Jagannathan ◽  
Han Gi Chae ◽  
Rahul Jain ◽  
Satish Kumar
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Properties ◽  
Carbon Fibers

Ball milling-assisted sol–gel route to Li4Ti5O12 and its electrochemical properties

2009 ◽  
Vol 470 (1-2) ◽  
pp. 544-547 ◽  
Author(s):  
Guofeng Yan ◽  
Haisheng Fang ◽  
Huijuan Zhao ◽  
Guangshe Li ◽  
Yong Yang ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Ball Milling ◽  
Sol Gel
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