Flexible micro-supercapacitors from photoresist-derived carbon electrodes on flexible substrates

This paper reports a simple and scalable technique for the fabrication of flexible micro-supercapacitors. The supercapacitor electrodes are synthesized via the pyrolysis of patterned photoresist on a SiO_2/Si substrate. The electrodes can then be moved to flexible substrates through a simple transfer process. The fabricated devices show excellent energy density of 0.3 mJ/cm², maximum power density of 5 mW/cm², and good performance under electrochemical cycling. The electrochemical performance is maintained after 300 mechanical bending cycles.