Using sodium dodecylbenzene sulfonate as emulsifier,transition metal oxide as stabilizer,toluene as soft template,ammonium persulfate as oxidant,and concentrated hydrochloric acid as dopant,doped state polyaniline(PAN) particles were prepared by Pickering emulsion method.Using Fe3O4,FeCo2O4,MnCo2O4,and ZnCo2O4 as transition metal oxides,a series of PAN were synthesized.The structure and morphology of the samples were characterized by XRD,SEM,and FT-IR,and a three-electrode system was used to test the specific capacitance,charge-discharge performance and impedance of PAN.Results shown that the addition of transition metal oxides in Pickering emulsions was beneficial to increase the specific capacitance of PAN,and reduced its impedance.Among them,ZnCo2O4 had the most significant effect on improving the electrochemical performance of PAN.In the constant current charge and discharge test,the specific capacitance of PAN prepared with Fe3O4,FeCo2O4,MnCo2O4,and ZnCo2O4 increased by 1.54%,57.95%,52.25% and 61.76% respectively,compared with those without addition.In the AC impedance test,the PAN doped with transition metal ions had a lower impedance than the undoped PAN.
Liu Jing, Zhou Biao, Cai Qinyu, Zheng Chen, Yao Bolong, Wang Likui
. Study on preparation of transition metal doped PAN and their electrochemical performance[J]. New Chemical Materials, 2021
, 49(5)
: 73
-77
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.017
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