关键词: 二氧化碳, 电化学还原, 阴极材料

Abstract: Electrochemical reduction of carbon dioxide is of great importance not only for the environment but also for the resource and economic benefit. Development of cathode materials for electrochemical reduction of carbon dioxide and researches on these electrode materials in aqueous，organic and ion-liquid media are reviewed in this paper，and their advantages and disadvantages are discussed. In aqueous media，adequate H+ is provided for the CO2 hydrogenation reaction with a comparatively easy process，but the product shows less obvious promise for fuel use. In organic solution，high efficiency is achieved while reaction mechanism follows complicated pathways. Ion-liquid is a new research field with a much lower overpotential for CO2? formation，nevertheless the products are much more complex and difficult to separate. A prospect for further developments in this field is presented，requiring deeper research on composite material and reaction interface.

Key words: carbon dioxide, electrochemical reduction, cathode materials