Fig. 4: Electrochemical performance of the PTCDI||I2 cascade glass cell and the PTCDI||CP cathode-free cascade pouch cell.
From: Development of long lifespan high-energy aqueous organic||iodine rechargeable batteries
a Typical CV curve of the PTCDI||I2 cascade glass cell in a saturated mixed KCl/I2 aqueous electrolyte. b, c Typical GCD profile collected from the 1000th cycle and the corresponding differential capacity profile of the PTCDI||I2 cascade glass cell in a saturated mixed KCl/I2 aqueous electrolyte. d, e Cycling performance and rate capability of the PTCDI||I2 cascade glass cell in a saturated mixed KCl/I2 aqueous electrolyte, respectively. The specific capacity was calculated based on the mass loading of I2 in the I2@AC cathode. f–h Photograph, capacity retention, and rate capability of the PTCDI||CP cathode-free cascade pouch cell in a saturated mixed KCl/I2 aqueous electrolyte. The error bar given in h means the standard deviation of the three times tested results, and the values are in the range of 0.38–0.95. i GCD curves collected from the rate capability of the PTCDI||CP cathode-free cascade pouch cell at various applied currents.
