Platinum-free photoelectrochromic devices working with copper-based electrolytes for ultrastable smart windows

被引：65

作者：

Lavagna, Luca ^{[1
,2
]}

Syrrokostas, George ^{[3
]}

Fagiolari, Lucia ^{[1
]}

Amici, Julia ^{[1
,2
]}

Francia, Carlotta ^{[1
,2
]}

Bodoardo, Silvia ^{[1
,2
]}

Leftheriotis, George ^{[3
]}

Bella, Federico ^{[1
,2
]}

机构：

[1] Politecn Torino, Dept Appl Sci & Technol, Corso Duca Abruzzi 24, I-10129 Turin, Italy

[2] Natl Interuniv Consortium Mat Sci & Technol INSTM, Via Giuseppe Giusti 9, I-50121 Florence, Italy

[3] Univ Patras, Renewable Energy Lab, Phys Dept, Rion 26500, Greece

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2021年 / 9卷 / 35期

关键词：

FREE COUNTER ELECTRODES; SENSITIZED SOLAR-CELLS; GRAPHENE NANOPLATELETS; REDOX MEDIATORS; MEMBRANES;

D O I：

10.1039/d1ta03544d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photoelectrochromic systems are devices designed for large-scale manufacturing of smart windows, capable of changing their transmittance according to external environmental conditions. This communication proposes the replacement of the two most critical photoelectrochemical device components studied so far, namely the counter electrode and the redox mediator. Regarding the first, graphene nanoplatelets are used to replace platinum, maintaining both its optical and electrocatalytic properties, and at the same time reducing the device cost. Secondly, a copper-based redox pair was chosen to solve the corrosion problems typically encountered with the iodine-based mediator. The combination of the above components led to devices with high performance (coloration speeds in the order of seconds, with a maximum contrast ratio of 10.4 : 1), as well as the achievement of a long-term stability record (over 400 days) for these photoelectrochromic systems.

引用

页码：19687 / 19691

页数：5