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Chemcial Industry and Engineering 2018, Vol. 35 Issue (2) :1-8    DOI: 10.13353/j.issn.1004.9533.20161068
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MnCO3/CB Composite and Its Application for Electrochemical Capacitor
Han Liqiong, Liu Kunlin, Chen Mingming
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract 

In order to improve the characterization of MnCO3, a three-dimensional composite of MnCO3 and carbon black (CB) is built via a quite simple co-precipitation method at room temperature. Firstly we use concentrate HNO3 to purify and activate the CB, then we put the CB into the mixture of NH4HCO3 and MnSO4 for co-precipitation. We find many negative groups (carboxyl and quinone) on the purified CBs' surface by FT-IR and XPS, which make CB difficult to reunite in the water. MnCO3 like lotus is mixed with flocculated carbon black with diameter 700 nm which is identified by SEM. The result of XRD shows that the fiber like product is MnCO3. The cyclic voltammetry of the MnCO3/CB nanocomposite shows better electrochemical performance than pure MnCO3. As a new capacitor energy storage material, MnCO3/CB composite provide a new direction for supercapacitor electrode material.

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Han Liqiong
Liu Kunlin
Chen Mingming
Keywordssupercapacitor;   composite;   MnCO3   carbon black;   electrochemical characterization     
Received 2016-04-14;
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Han Liqiong, Liu Kunlin, Chen Mingming.MnCO3/CB Composite and Its Application for Electrochemical Capacitor[J]  Chemcial Industry and Engineering, 2018,V35(2): 1-8
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