Lan Hu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Lan Hu has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
Carina Lagergren
Applied Electrochemistry, Department of Chemical Engineering and Technology, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
1 shared publication- Göran Lindbergh
KTH Royal Institute of Technology
1 shared publication
Latest Publications
- 5 February 2015
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions
- Vol. 182, 493-509
Electrode kinetics of the NiO porous electrode for oxygen production in the molten carbonate electrolysis cell (MCEC)
The performance of a molten carbonate electrolysis cell (MCEC) is to a great extent determined by the anode, i.e. the oxygen production reaction at the porous NiO electrode. In this study, stationary polarization curves for the NiO electrode were measured under varying gas compositions and temperatures. The exchange current densities were calculated numerically from the slopes at low overpotential. Positive dependency on the exchange current density was found for the partial pressure of oxygen. When the temperature was increased in the range 600–650 °C, the reaction order of oxygen decreased from 0.97 to 0.80. However, there are two different cases for the partial pressure dependency of carbon dioxide within this temperature range: positive values, 0.09–0.30, for the reaction order at lower CO 2 concentration, and negative values, −0.26–0.01, with increasing CO 2 content. A comparison of theoretically obtained data indicates that the oxygen-producing reaction in MCEC could be reasonably satisfied by the reverse of oxygen reduction by the oxygen mechanism I, an n = 4 electron reaction, assuming a low coverage of oxide ions at high CO 2 content and an intermediate coverage for a low CO 2 concentration.
- 5 February 2015
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions
- Vol. 182, 493-509
Electrode kinetics of the NiO porous electrode for oxygen production in the molten carbonate electrolysis cell (MCEC)
The performance of a molten carbonate electrolysis cell (MCEC) is to a great extent determined by the anode, i.e. the oxygen production reaction at the porous NiO electrode. In this study, stationary polarization curves for the NiO electrode were measured under varying gas compositions and temperatures. The exchange current densities were calculated numerically from the slopes at low overpotential. Positive dependency on the exchange current density was found for the partial pressure of oxygen. When the temperature was increased in the range 600–650 °C, the reaction order of oxygen decreased from 0.97 to 0.80. However, there are two different cases for the partial pressure dependency of carbon dioxide within this temperature range: positive values, 0.09–0.30, for the reaction order at lower CO 2 concentration, and negative values, −0.26–0.01, with increasing CO 2 content. A comparison of theoretically obtained data indicates that the oxygen-producing reaction in MCEC could be reasonably satisfied by the reverse of oxygen reduction by the oxygen mechanism I, an n = 4 electron reaction, assuming a low coverage of oxide ions at high CO 2 content and an intermediate coverage for a low CO 2 concentration.