高温共电解H_2O/CO_2制备清洁燃料

Clean Fuel Production Through High Temperature Co-Electrolysis of H_2O and CO_2

高温共电解(high temperature co-electrolysis,HTCE)H2O和CO2技术是一种很有前景的清洁燃料制备和CO2减排新技术。该技术可利用可再生能源或核能提供的电能和高温热,通过高温固体氧化物电解池(solid oxide electrolysis cell,SOEC)将H2O和CO2共电解生产合成气(H2+CO),再将制备的合成气用于生产各种液态碳氢燃料。本文详细介绍了利用高温固体氧化物电解池共电解H2O和CO2制备合成燃料的基本原理、发展历程和目前世界各国的研究进展,对该技术的优势和特点进行了分析,并对该技术在关键材料、反应机理等方面存在的问题进行了总结和讨论,最后对其在新能源技术领域的应用前景作了展望。

High temperature co-electrolysis（HTCE） technology using solid oxide electrolysis cell（SOEC） is a promising method for the production of clean fuels.Also,it is a novel path of CO2 neutral cycle for utilizing CO2 and thus reducing CO2 emissions due to the generation and use of synthetic liquid fuels for the existing transportation infrastructure.It can make use of renewable energy or nuclear energy to split H2O and CO2 in SOEC system to produce synthesis gas（H2＋CO）,which is raw materials of synthetic hydrocarbon fuels.In this paper,the basic principle,the advantages of co-electrolysis of H2O and CO2 via SOEC for clean fuel production,the key technologies and challenges are described in detail.The main advantages of this technique lie in the following aspects：It can provide a carbon neutral means of producing syngas while consuming CO2;It can obtain very high efficiency when coupled with renewable energies or advanced nuclear reactors;It has high flexibility such as reversible operation,modular,scalable process,and so on.And it can also be used as an efficient storage means for fluctuating renewable energy.The current research situation around the world and its application prospects in the field of advanced energy technologies are also discussed.