Highly efficient and stable ionic liquid-based gel electrolytes
Source abstract
Abstract
Gel electrolytes are promising candidates for dye-sensitized solar cells (DSSCs) and other devices, but the ways to obtain stable gels always result in sacrifice of their ionic conductivity. This contradiction seriously limits the practical application of gel electrolytes. Herein, a new design strategy using rich carboxylic group-modified silica nanoparticles (COOH-SiO2) with a branched, well-organized framework to develop ionic liquid-based gel electrolytes possessing high conductivity is demonstrated. The branched network of COOH-SiO2 and the strong interaction in electrolytes result in the effective solidification of ionic liquids. Moreover, adding COOH-SiO2 to ionic liquid electrolytes contributes to salt dissociation, decreases the activation energy, and improves the charge transport and recombination characteristics at the electrolyte/electrode interface. DSSCs fabricated with COOH-SiO2 nanoparticles deliver a higher short-circuit photocurrent density (Jsc) than the reference cell. A maximum efficiency of 8.02% with the highest Jsc value of 16.60 mA cm-2 is obtained for solar cells containing 6 wt% COOH-SiO2.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polyoxometalates: Synthesis and Applications · Ionic liquids properties and applications · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education
Institute of Microscale Optoelectronics
Shenzhen University
Shenzhen 518060
China
Beijing National laboratory for Molecular Sciences
Key Laboratory of Photochemistry
CAS Research/Education Center for Excellence in Molecular Sciences
Institute of Chemistry
Chinese Academy of Sciences
College of Materials Science and Engineering
Beijing University of Chemical Technology
Beijing 100029
Pillar of Engineering Product Development
Singapore University of Technology and Design
Singapore 487372
Singapore
Funding
National Natural Science Foundation of China · National Materials Genome Project · China Postdoctoral Science Foundation · Fundamental Research Funds for the Central Universities · Department of Education of Guangdong Province · Shenzhen Peacock Plan · Ministry of Education - Singapore · Digital Manufacturing and Design Centre, Singapore University of Technology and Design
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