Abstract
Pure organic films consisting of polypyrrole, polyaniline and a composite of polypyrrole and polyaniline electrodeposited in the ionic liquid EMIM-TFSI onto mesoporous carbon electrodes are tested for their hydrogen evolution reaction capabilities. The use of these intrinsically conducting polymers is seen as a way of stepping away from expensive and rare metallic catalysts. Co-polymerisation of polypyrrole and polyaniline in a 1 : 10 ratio in EMIM-TFSI was found to be doped with the TFSI− anion and be much more active to the hydrogen evolution reaction when compared to pure polymers. Tafel analysis of the composite gave a value of 144 mV/dec indicating that the Volmer step is the rate limiting step. However, stability tests showed an improvement in the composite's overpoential performance for the hydrogen evolution reaction.
Original language | English |
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Article number | e202400215 |
Journal | ChemistryOpen |
Volume | 13 |
Issue number | 12 |
Early online date | 24 Sept 2024 |
DOIs | |
Publication status | Published - 31 Dec 2024 |
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.Funding
CS is thankful to the Commonwealth Scholarship Commission, London (CSC split\u2010site PhD fellowship) (Grant: INCN\u201022\u2010437), Ministry of Human Resource and Development (MHRD), India, for financial support to carry out this study. SD thanks the Royal Society (Grant: UF160272). SD and CS thank the university of Bath, UK. CS, YSN and KP thank the Indian Institute of Technology (IIT), Roorkee. CS: Experimental, original draft writing and conceptualisation; SD: supervision, corrections, and procurement; YSN and KP: Suggestions and draft corrections.
Funders | Funder number |
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Ministry of Education, India | |
Commonwealth Scholarship Commission | INCN‐22‐437 |
Commonwealth Scholarship Commission | |
Royal Society | UF160272 |
Royal Society |
Keywords
- Copolymerization
- Electrodeposition
- Hydrogen evolution
- Ionic Liquids
- Polymers
ASJC Scopus subject areas
- General Chemistry