Figure2

Figure 2. CV tests of V$$ _4 $$C$$ _3 $$T$$ _z $$ film electrodes in 19 m LiBr electrolyte, a half-cell setup and a -0.7 to 0.8 V vs. Ag electrochemical window. (A) OCPs at steps 1, 3 and 5, (B) CV at 10 mV s^-1 (step 2), (C) CV at 0.5 mV s^-1 (step 4), (D) CV at 10 mV s^-1 (step 6), (E) CV at 0.5 mV s^-1 (step 6). The arrows indicate currents at specified potentials or within a potential range from cycle 1 to cycle n.