Figure 18.

a) Schedule of integrating the fiber‐based supercapacitor triboelectric nanogenerator power system. b) Basic working principle of FTENG. Reproduced with permission.221 Copyright 2015, Wiley‐VCH. Self‐charging power unit. c) An optical image of TENG‐cloth that stores the energy with LIB belt, and then powers heartbeat meter strap, which has remote communication with a smart phone. d) The rear side of heartbeat meter, indicating that the LIB belt replaced its original coin cell. e) The equivalent electrical circuit of the self‐charging power system. f) The voltage profiles of the LIB belt charged by the TENG‐cloth and galvanostatically discharged (GD) at 1 µA for 3 cycles. Reproduced with permission.222 Copyright 2015, Wiley‐VCH.