Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 6: 37 - 41

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.06.006

Chemistry & Chemical Engineering

Effects of Different Carbon Aerogel Conductive Agents on Performance of Li-MnO2 Battery

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  • 1． School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640,Guangdong，China;2． School of Chemistry and Chemical Engineering，Guangzhou University，Guangzhou 510006，Guangdong，China;3． Guangzhou Great Power Energy ＆ Technology Co． ，Ltd． ，Guangzhou 511483，Guangdong，China
杨伟(1982-)，男，博士，主要从事应用电化学与新能源材料研究．

Received date: 2014-12-02

  Revised date: 2015-01-05

  Online published: 2015-05-04

Supported by

Supported by the National Natural Science Foundation of China(21376056) and the Guangdong IAR Fund (2011-1579)

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Abstract

Carbon aerogel was prepared by means of the sol-gel method from resorcinol and formaldehyde through CO2 supercritical drying，freeze drying and ambient drying，and the resistivity and pore structure of the product were characterized via N 2 low-temperature adsorption desorption，four-probe method and SEM． Moreover，the influence of carbon aerogel conductive agent on the high-rate discharge performance of Li-MnO2 battery was investigated． The results indicate that (1) the carbon aerogels produced via different drying methods are of similar resistivity but distinctly different specific surface areas; (2) the carbon aerogel prepared via CO2 supercritical drying possesses the highest specific surface area (1017. 85m 2 /g) and the largest constant-current specific discharge capacity (101mAh/g at a current of 100mA); (3) the voltage plateau of the carbon aerogel prepared via CO2 supercritical drying is 80mV higher than that prepared via ambient drying; and (4) there is little difference in the 1 mA discharge capacity of different carbon aerogels． All these above-mentioned statements show that carbon aerogel conductive agents possess higher performance than the commercial acetylene black．

Key words： Li-MnO2 battery; carbon aerogel; conductive agent; high-rate discharge

Cite this article

Yang Wei Chen Sheng-zhou Xue Jian-jun Hu Xin-fa Xia Xin-de Lin Wei-ming . Effects of Different Carbon Aerogel Conductive Agents on Performance of Li-MnO2 Battery[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(6) : 37 -41 . DOI: 10.3969/j.issn.1000-565X.2015.06.006

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