High Efficiency Electrochemical Reduction of Carbon Dioxide under High Pressure on a Gas Diffusion Electrode Containing Pt Catalysts

1995 ◽  
Vol 142 (4) ◽  
pp. L57-L59 ◽  
Author(s):  
Kohjiro Hara ◽  
Akihiko Kudo ◽  
Tadayoshi Sakata ◽  
Masahiro Watanabe
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Electrochemical Reduction ◽  
High Efficiency ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Pt Catalysts

Enhanced electrochemical reduction of carbon dioxide to formic acid using a two-layer gas diffusion electrode in a microbial electrolysis cell

RSC Advances ◽  
2015 ◽  
Vol 5 (14) ◽  
pp. 10346-10351 ◽  
Author(s):  
Qinian Wang ◽  
Heng Dong ◽  
Hongbing Yu ◽  
Han Yu ◽  
Minghui Liu
Keyword(s):  
Carbon Dioxide ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
Gas Diffusion ◽  
Gas Diffusion Electrode ◽  
Electrolysis Cell ◽  
Microbial Electrolysis Cell ◽  
Microbial Electrolysis

Using a two-layer gas diffusion electrode for ERCF in MEC, the Faraday efficiency was improved by 36.1%.

Combined Cycle Engine Cascades Achieving High Efficiency

2016 ◽  
Author(s):  
Andy Schroder ◽  
Mark G. Turner ◽  
Rory A. Roberts
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Fuel Cell ◽  
Supercritical Carbon Dioxide ◽  
High Efficiency ◽  
Waste Heat ◽  
Combined Cycle ◽  
Design Parameters ◽  
Topping Cycle ◽  
Supercritical Carbon

Two combined cycle engine cascade concepts are presented in this paper. The first uses a traditional open loop gas turbine engine (Brayton cycle) with a combustor as the topping cycle and a series of supercritical carbon dioxide (S–CO2) engines as intermediate cycles and a bottoming cycle. A global optimization of the engine design parameters was conducted to maximize the combined efficiency of all of the engines. A combined cycle efficiency of 65.0% is predicted. The second combined cycle configuration utilizes a fuel cell inside of the topping cycle in addition to a combustor. The fuel cell utilizes methane fuel. The waste heat from the fuel cell is used to heat the high pressure air. A combustor is also used to burn the excess fuel not usable by the fuel cell. After being heated, the high pressure, high temperature air expands through a turbine to atmospheric pressure. The low pressure, intermediate temperature exhaust air is then used to power a cascade of supercritical carbon dioxide engines. A combined efficiency of 73.1% using the fuel lower heating value is predicted with this combined fuel cell and heat engine device. Details of thermodynamics as well as the (S–CO2) engines are given.

Sign in / Sign up

Export Citation Format

Share Document