“…Impressively, this areal capacitance value almost sets a record for flexible transparent supercapacitor electrodes. Such an excellent optical transmittance and areal capacitance performance ( T ≈ 69.7% & C A ≈ 1.15 F/cm 2 ) is much superior to most reported flexible transparent supercapacitor electrodes, such as the Au@MnO 2 nanomesh, MnO 2 nanoislands, MnO 2 wire network, Ag NWs–MoS 2 , FeOOH–graphene, and so on, as shown in Figure f. ,,,,,,,− Furthermore, considering the loading mass of MnO 2 active materials, the gravimetric capacitance ( C G ) of MnO 2 deposited at different temperatures shows a large difference: 89.3 F/g for 25 °C, 179.58 F/g for 40 °C, 176.30 F/g for 60 °C, 293.37 F/g for 75 °C, and 213.43 F/g for 85 °C, indicating that the greatly enhanced areal capacitance of MnO 2 deposited at high deposition temperatures does not just arise from the increased loading mass of MnO 2 . Meanwhile, the MnO 2 morphology plays an important role on its charge storage capabilities.…”