Solar to fuels conversion technologies: a perspective

详细信息    查看全文

• 作者：Harry L. Tuller
• 关键词：Solar fuels ; CO2 sequestration ; Hydrogen economy ; Photoelectrochemistry ; Electrolysis ; Fuel cell ; Thermochemical processes ; Solar energy
• 刊名：Materials for Renewable and Sustainable Energy
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：6
• 期：1
• 全文大小：1201KB
• 刊物主题：Materials Science, general; Renewable and Green Energy; Renewable and Green Energy;
• 出版者：Springer Berlin Heidelberg
• ISSN：2194-1467
• 卷排序：6

文摘

To meet increasing energy needs, while limiting greenhouse gas emissions over the coming decades, power capacity on a large scale will need to be provided from renewable sources, with solar expected to play a central role. While the focus to date has been on electricity generation via photovoltaic (PV) cells, electricity production currently accounts for only about one-third of total primary energy consumption. As a consequence, solar-to-fuel conversion will need to play an increasingly important role and, thereby, satisfy the need to replace high energy density fossil fuels with cleaner alternatives that remain easy to transport and store. The solar refinery concept (Herron et al. in Energy Environ Sci 8:126–157, 2015), in which captured solar radiation provides energy in the form of heat, electricity or photons, used to convert the basic chemical feedstocks CO₂ and H₂O into fuels, is reviewed as are the key conversion processes based on (1) combined PV and electrolysis, (2) photoelectrochemically driven electrolysis and (3) thermochemical processes, all focused on initially converting H₂O and CO₂ to H₂ and CO. Recent advances, as well as remaining challenges, associated with solar-to-fuel conversion are discussed, as is the need for an intensive research and development effort to bring such processes to scale.