Registered charity number: 207890 Showcasing research from the group of Prof. Montree Sawangphruk at the School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Thailand. A new concept of charging supercapacitors based on the photovoltaic effect A Co(OH) 2 supercapacitor with an energy band gap of 2.85 eV can absorb blue light and generate photoelectrons via the photovoltaic effect leading to high areal capacitance. rsc.li/chemcomm As featured in: See Montree Sawangphruk et al., Chem. Commun., 2017, 53, 709.