Wearable Photo-Thermo-Electrochemical Cells (PTECs) Harvesting Solar Energy.
Macromol Rapid Commun
; 43(6): e2200001, 2022 Mar.
Article
em En
| MEDLINE
| ID: mdl-35065001
ABSTRACT
Solar induced thermal energy is a vital heat source supplementing body heat to realize thermo-to-electric energy supply for wearable electronics. Thermo-electrochemical cells, compared to the widely investigated thermoelectric generators, show greater potential in wearable applications due to the higher voltage output from low-grade heat and the increased option range of cheap and flexible electrode/electrolyte materials. A wearable photo-thermo-electrochemical cell (PTEC) is first fabricated here through the introduction of a polymer-based flexible photothermal film as a solar-absorber and hot electrode, followed by a systematic investigation of wearable device design. The as-prepared PTEC single device shows outstanding output voltage and current density of 15.0 mV and 10.8 A m-2 and 7.1 mV and 8.57 A m-2 , for the device employing p-type and n-type gel electrolytes, respectively. Benefiting from the equivalent performance in current density, a series connection containing 18 pairs of p-n PTEC devices is effectively made, which can harvest solar energy and charge supercapacitors to above 250 mV (1 sun solar illumination). Meanwhile, a watch-strap shaped flexible PTEC (eight p-n pairs) that can be worn on a wrist is fabricated and the realized voltage above 150 mV under light shows the potential for use in wearable applications.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Energia Solar
/
Dispositivos Eletrônicos Vestíveis
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2022
Tipo de documento:
Article