Simultaneously harvesting mechanical and chemical energies by a hybrid cell for self-powered biosensors and personal electronics†

School of Materials Science and Engineering Georgia 30332-0245, USA. E-mail: zlwang@ Beijing Institute of Nanoenergy and Nanosyst † Electronic supplementary information include the photograph of the fabricated the Si micropyramid template, cross-se PDMS lm, XRD patterns of BaTiO3 nano and current density of the composite l electrochemical cell, the schematic biosensor, photograph of the biosenso electrode, and the enlarged discharging 10.1039/c3ee40764k Cite this: Energy Environ. Sci., 2013, 6, 1744