A selective and efficient electrocatalyst for carbon dioxide reduction
A selective and efficient electrocatalyst for carbon dioxide reduction
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DOI：
10.1038/ncomms4242
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发表时间：
2014-01-01
影响因子：
16.6
通讯作者：
Jiao, Feng
中科院分区：
文献类型：
--
作者：
Lu, Qi;Rosen, Jonathan;Jiao, Feng
以选择性和有效的方式将二氧化碳转化为有用的化学品仍然是可再生和可持续能源研究的一个重大挑战。银是一种有趣的电催化剂，由于其在室温下选择性地将二氧化碳转化为一氧化碳的能力;然而，传统的多晶银电催化剂需要大的过电位。在这里，我们报道了一种纳米多孔银电催化剂，其能够在200 - 300的中等过电位下以比其多晶对应物高3，000倍以上的速率（即，电流）以约92%的选择性将二氧化碳电化学还原为一氧化碳。
Converting carbon dioxide to useful chemicals in a selective and efficient manner remains a major challenge in renewable and sustainable energy research. Silver is an interesting electrocatalyst owing to its capability of converting carbon dioxide to carbon monoxide selectively at room temperature; however, the traditional polycrystalline silver electrocatalyst requires a large overpotential. Here we report a nanoporous silver electrocatalyst that is able to electrochemically reduce carbon dioxide to carbon monoxide with approximately 92% selectivity at a rate (that is, current) over 3,000 times higher than its polycrystalline counterpart under moderate overpotentials of