Preparation and electrosorption performance of(NH4)2S2O8/AC electrode
In order to prepare activated carbon electrodes with better electrochemical performance,modified activated carbon(APS-AC)was obtained by impregnation with(NH4)2S2O8.The better conductive agents in graphene microsheets,conductive carbon black,and carbon nanotubes were screened through EST tech-nology to prepare APS-AC electrodes with better electrochemical performance.We compared the electro-chemical performance of APS-AC through testing methods such as CV,EIS,GCD,and CA,and analyzed the electro adsorption performance and adsorption law in combination with adsorption kinetics.The results showed that the APS-AC electrode prepared with conductive carbon black had better performance,with a specific capacitance of 275.208 F/g.Through characterization,it was found that the contact angle of the APS-AC electrode decreased and the hydrophilicity improved.A longer charging and discharging cycle re-sults in better charging and discharging performance and charge storage capacity.The adsorption efficiency of different anions and cations in the solution varies,with ion removal rates being K+＞Na and Cl-＞SO4-.The adsorption process is more in line with quasi second order adsorption kinetics.
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