NMR analysis of phosphoric acid distribution in porous fuel cell catalysts
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Understanding the interaction of phosphoric acid and porous electrocatalysts is of vital importance for a rational design of high performance phosphoric acid based fuel cells on a molecular level. We demonstrate for the first time that NMR spectroscopy can be used for elucidating the preferred distribution sites of phosphoric acid in various nanoporous carbons. A pore size dependent negative chemical shift of31P is observed, serving as a distinct signature of pore occupation, and applied for analysing a commercial catalyst (Pt@Vulcan) as a practical application.
Details
Original language | English |
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Pages (from-to) | 2547-2550 |
Number of pages | 4 |
Journal | Chemical communications |
Volume | 57 |
Issue number | 20 |
Publication status | Published - 5 Feb 2021 |
Peer-reviewed | Yes |
External IDs
PubMed | 33585854 |
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