Electrochemical hydrogen production on a metal-free polymer
| Autor: | Xianjie Liu, Ziyauddin Khan, Sergey A. Grigoriev, Magnus Berggren, Viktor Gueskine, A. S. Pushkarev, Mats Fahlman, Xavier Crispin, Mikhail Vagin, Igor Zozoulenko, I. V. Pushkareva, Amritpal Singh, Roudabeh Valiollahi |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Conductive polymer
Electrolysis Annan kemi Materials science Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Exchange current density 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry Electrocatalyst 01 natural sciences Electrochemical energy conversion 0104 chemical sciences law.invention Fuel Technology Chemical engineering PEDOT:PSS law 0210 nano-technology Other Chemistry Topics Hydrogen production |
| Popis: | The exploration for true electrocatalytic reactions at organic conducting polymer electrodes, including chemisorption of a reactant and desorption of a product, is receiving renewed interest due to the profound implications it could have on low-cost large area electrochemical energy technology. Here, we finalize the debate about the ability of an organic electrode, more specifically poly(3,4-ethylenedioxythiophene) (PEDOT), to be an electrocatalyst for hydrogen production. This paper proves and covers fundamental studies of the hydrogen evolution reaction (HER) on PEDOT films. Both theory based on DFT (Density Functional Theory) and experimental studies using electrochemical techniques and operando mass spectrometry suggest a Volmer-Heyrovsky mechanism for the actual HER on PEDOT. It is shown that PEDOT reaches an exchange current density comparable to that of metals (i.e. Cu, Ni, and Au) and in addition does not form passivating oxide layers or suffer from chemical corrosion in acidic media. Finally, an electrolyzer stack using the organic polymer electrode demonstrates HER performance in real applications. Funding Agencies|Goran Gustafssons Stiftelse [25034 300523]; Knut Alice Wallenberg Foundation (WWSC); Peter Wallenberg Foundation [PWS2016-0010]; VetenskapsradetSwedish Research Council; National Research Centre "Kurchatov Institute" [1808]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [2009-00971] |
| Databáze: | OpenAIRE |
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