Electrochemical crosslinking type high-performance electrochromic film as well as preparation method and application thereof

• Main Authors: JIANG ZHENHUA, WANG QILIN, MA JIERUN, CHEN ZHENG, XING ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRICITY; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MINERAL OR SLAG WOOL; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention relates to preparation of an electrochemical crosslinking type high-performance electrochromic film and a material, and aims at solving the problems that a high-performance non-conjugated electrochromic polymer is tedious in preparation step, high in raw material cost, complex in processing technology and the like, starting from the aspects of molecular design and preparation technology, a non-conjugated polymer capable of being electrochemically crosslinked is selected, and the high-performance non-conjugated electrochromic film is prepared. A stable polymer cross-linked network, namely a brand-new cross-linked polymer electrochromic film, is constructed on a conductive substrate through an electrochemical method. On one hand, the conjugated structure of a polymer color-changing group is enlarged through electrochemical crosslinking, so that the initial oxidation potential is reduced; and on the other hand, the stable cross-linked network also reduces the damage of the electrochemical doping pr