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Two graphene materials, TRGO-1 and TRGO-2, prepared by the thermal exfoliation/reduction at 1000 °C of two graphite oxides with different characteristics, are investigated as positive electrodes in a vanadium redox flow battery (VRFB). A detailed study of their electrochemical response toward the [VO 2+ ]/[VO 2+ ] redox system is carried out through cyclic voltammetry, electrochemical...
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