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Single-catalyst water splitter from Stanford produces clean-burning hydrogen 24/7
https://news.stanford.edu/news/2015/june/water-splitter-catalyst-062315.html[font face=Serif]Stanford Report, June 23, 2015
[font size=5]Single-catalyst water splitter from Stanford produces clean-burning hydrogen 24/7[/font]
[font size=4]Stanford scientists have developed a cheap and efficient way to extract clean-burning hydrogen fuel from water 24 hours a day, seven days a week.[/font]
By Mark Shwartz
[font size=3]Stanford University scientists have invented a low-cost water splitter that uses a single catalyst to produce both hydrogen and oxygen gas 24 hours a day, seven days a week.
The device, described in a study published June 23 in Nature Communications, could provide a renewable source of clean-burning hydrogen fuel for transportation and industry.
…
"Our water splitter is unique because we only use one catalyst, nickel-iron oxide, for both electrodes," said graduate student Haotian Wang, lead author of the study. "This bi-functional catalyst can split water continuously for more than a week with a steady input of just 1.5 volts of electricity. That's an unprecedented water-splitting efficiency of 82 percent at room temperature."
In conventional water splitters, the hydrogen and oxygen catalysts often require different electrolytes with different pH – one acidic, one alkaline – to remain stable and active. "For practical water splitting, an expensive barrier is needed to separate the two electrolytes, adding to the cost of the device," Wang said. "But our single-catalyst water splitter operates efficiently in one electrolyte with a uniform pH."
…[/font][/font]
[font size=5]Single-catalyst water splitter from Stanford produces clean-burning hydrogen 24/7[/font]
[font size=4]Stanford scientists have developed a cheap and efficient way to extract clean-burning hydrogen fuel from water 24 hours a day, seven days a week.[/font]
By Mark Shwartz
[font size=3]Stanford University scientists have invented a low-cost water splitter that uses a single catalyst to produce both hydrogen and oxygen gas 24 hours a day, seven days a week.
The device, described in a study published June 23 in Nature Communications, could provide a renewable source of clean-burning hydrogen fuel for transportation and industry.
…
"Our water splitter is unique because we only use one catalyst, nickel-iron oxide, for both electrodes," said graduate student Haotian Wang, lead author of the study. "This bi-functional catalyst can split water continuously for more than a week with a steady input of just 1.5 volts of electricity. That's an unprecedented water-splitting efficiency of 82 percent at room temperature."
In conventional water splitters, the hydrogen and oxygen catalysts often require different electrolytes with different pH – one acidic, one alkaline – to remain stable and active. "For practical water splitting, an expensive barrier is needed to separate the two electrolytes, adding to the cost of the device," Wang said. "But our single-catalyst water splitter operates efficiently in one electrolyte with a uniform pH."
…[/font][/font]
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