Energy storing bricks for stationary PEDOT supercapacitors

Abstract

Fired brick is a universal building material, produced by thousand-year-old technology, that throughout history has seldom served any other purpose. Here, we develop a scalable, costeffective and versatile chemical synthesis using a fired brick to control oxidative radical polymerization and deposition of a nanofibrillar coating of the conducting polymer poly(3,4ethylenedioxythiophene) (PEDOT). A fired brick's open microstructure, mechanical robustness and~8 wt% α-Fe 2 O 3 content afford an ideal substrate for developing electrochemical PEDOT electrodes and stationary supercapacitors that readily stack into modules. Fiveminute epoxy serves as a waterproof case enabling the operation of our supercapacitors while submerged underwater and a gel electrolyte extends cycling stability to 10,000 cycles with~90% capacitance retention.

Biohybrid plants with electronic roots via in vivo polymerization of conjugated oligomers

“…40,41 Furthermore, there is a growing interest for structural supercapacitors where the volume of an object can contribute to the charge storage. 42,43 To this end, we constructed a proof-of-concept supercapacitor where the roots served as the charge storage electrodes. The cyclic voltammogram had a box shape that deviated from the ideal shape with increasing scan rate as observed in the p(ETE-S) root, indicating limiting ionic or electronic transport.…”

Smart Energy Bricks: Ti3C2@Polymer Electrochemical Energy Storage inside Bricks by 3D Printing

“…Our idea is to create a smart house energy storage system that allows us to store electricity in the wall and use it later. [45] For example, you could store the electricity generated by solar panels during the day and use it at night. [46,47] We can also transfer unused stored electricity through the on-grid system.…”

Fingerprint‐Inspired High Conductive PEDOT‐Coated Nanofiber Film for Ultra‐Sensitive, Stretchable, and Flexible Piezoresistive Sensor

“…The deposition of PEDOT was first initiated by Fe 3+ ions and then the EDOT monomer was oxidized to trigger an oxidative radical polymerization. PEDOT synthesized by this method exposes long conjugation length, low electrical resistance, as well as high stability, [ 34 ] while its conductivity can directly be controlled by the content of FeCl 3 . It is worth noting that the appearance color of PWNF with 3 wt% FeCl 3 would turn blue after coating the PEDOT layer.…”