Abstract
A quaternized polysulfone (QNPSU) composite membrane is fabricated for zinc-bromine redox flow battery. The structure of the membrane is examined by FT-IR spectra and SEM. The conductivity of the membrane is tested by electrochemical analyzer. After a zinc-bromine battery with this composite membrane is operated at different voltage while charging and at different current while discharging to examine the performance of the membrane, it is found that the discharge voltage was 0.9672 V and the power density was 6 mW/cm2at a current of 0.1 A, which indicated that the novel composite membrane is a promising material for the flow battery.
Highlights
Many people have focused on the zinc-bromine redox flow battery because it is considered highly fascinating for energy storage
A quaternized polysulfone (QNPSU) composite membrane has been fabricated for zinc-bromine redox flow battery
The structure of the membrane is examined by FT-IR spectra and SEM
Summary
Received 13 February 2014; Revised 25 April 2014; Accepted 30 April 2014; Published 15 May 2014. A quaternized polysulfone (QNPSU) composite membrane is fabricated for zinc-bromine redox flow battery. The structure of the membrane is examined by FT-IR spectra and SEM. The conductivity of the membrane is tested by electrochemical analyzer. After a zinc-bromine battery with this composite membrane is operated at different voltage while charging and at different current while discharging to examine the performance of the membrane, it is found that the discharge voltage was 0.9672 V and the power density was 6 mW/cm at a current of 0.1 A, which indicated that the novel composite membrane is a promising material for the flow battery
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