Int. J. of Nanomanufacturing   »   2014 Vol.10, No.1/2

 

 

Title: A novel electrodes collocation for asymmetric electrochemical capacitor

 

Authors: Jiping Zhu; Guang Yang; Quanbao Xu; Junjie Zhao

 

Addresses:
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

 

Abstract: The Li4Ti5O12 and LiNi1/3Co1/3Mn1/3O2 electrode materials are prepared by solid state reaction by one step. The structures and morphologies of the LiNi1/3Co1/3Mn1/3O2 and Li4Ti5O12 electrode materials are characterised by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The electrochemical properties of asymmetric electrochemical capacitor are characterised by galvanostatic charge-discharge curves. Comparing the different compounding situations, the results show us the sample that has optimum content, containing active carbon (AC) mixed with 10% LiNi1/3Co1/3Mn1/3O2 and Li4Ti5O12, achieves a high specific capacitance and a good cyclic stability, and the specific capacitance is 178.5F·g−1 at 80 mA·g−1 in the voltage of 1 to 2.5 V, which has the best properties in our experiment.

 

Keywords: active carbon; electrochemical capacitors; electrode materials; lithium titanate; lithium manganate; electrochemical double-layer capacitors; EDLC; asymmetric electrochemical capacitors; AECs; lithium ion battery materials; solid state reaction; X-ray diffractometry; XRD; scanning electron microscopy; SEM.

 

DOI: 10.1504/IJNM.2014.058998

 

Int. J. of Nanomanufacturing, 2014 Vol.10, No.1/2, pp.64 - 74

 

Submission date: 03 Dec 2012
Date of acceptance: 25 Mar 2013
Available online: 01 Feb 2014

 

 

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