| 查看: 9129 | 回复: 219 | ||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | ||
[资源]
nature materials 最新: TiO2用于光解水制氢
|
||
|
A leading approach for large-scale electrochemical energy production with minimal global-warming gas emission is to use a renewable source of electricity, such as solar energy, to oxidize water, providing the abundant source of electrons needed in fuel synthesis.We report corrosion-resistant, nanocomposite anodes for the oxidation of water required to produce renewable fuels. Silicon, an earth-abundant element and an efficient photovoltaic material, is protected by atomic layer deposition (ALD) of a highly uniform, 2nm thick layer of titanium dioxide (TiO2) and then coated with an optically transmitting layer of a known catalyst (3nm iridium). Photoelectrochemical water oxidation was observed to occur below the reversible potential whereas dark electrochemicalwater oxidationwas found to have low-to-moderate overpotentials at all pH values, resulting in an inferred photovoltage of550 mV.Water oxidation is sustained at these anodes for many hours in harsh pH and oxidative environments whereas comparable silicon anodes without the TiO2 coating quickly fail. The desirable electrochemical efficiency and corrosion resistance of these anodes is made possible by the low electron-tunnelling resistance (<0:006cm2 for pC-Si) and uniform thickness of atomic-layer deposited TiO2. |
回复此楼» 猜你喜欢
收到国自然专家邀请后几年才会有本子送过来评
已经有4人回复
-
考博
已经有5人回复
-
26年申博自荐-计算机视觉
已经有4人回复
-
药化及相关博士的申请
已经有3人回复
-
一篇MDPI论文改变了学习工作和生活
已经有4人回复
-
一个化合物的合成路线：CAS:367929-02-0 名称：8β-乙烯基雌二醇
已经有4人回复
-
中国地质大学（北京）博士招生补录，数理学院材料科学与工程专业和材料与化工专业
已经有3人回复
193楼2015-05-08 14:39:26
11楼2011-07-08 16:03:10
简单回复
2011-06-24 02:44
回复
五星好评 顶一下，感谢分享！
dgf20083楼
2011-06-24 17:30
回复
五星好评 顶一下，感谢分享！
suxlei5楼
2011-07-02 21:36
回复
五星好评 顶一下，感谢分享！
2011-07-04 09:34
回复
五星好评 顶一下，感谢分享！
2011-07-05 21:43
回复
五星好评 顶一下，感谢分享！
2011-07-06 19:27
回复
五星好评 顶一下，感谢分享！
2011-07-07 09:40
回复
五星好评 顶一下，感谢分享！
caoge12楼
2011-07-12 10:25
回复
五星好评 顶一下，感谢分享！
pinghome13楼
2011-07-12 14:48
回复
五星好评 顶一下，感谢分享！
ok1984121014楼
2011-07-12 15:21
回复
五星好评 顶一下，感谢分享！