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This is an old revision of this page, as edited by 82.6.19.153 (talk) at 13:51, 25 October 2016 (→Citation for startup time of solid oxide fuel cells (SOFC): new section). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.


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Space probes

This statement is in the article. "The first commercial use of fuel cells came more than a century later in NASA space programs to generate power for probes, satellites and space capsules."

However, I can't find any sources on the web that state that a space probe used a fuel cell. I don't think any space probe used fuel cells at all; only manned spacecraft like the Shuttle and Biosatellite. Am I completely wrong? Are there actually probes that use fuel cells? anon (talk) 22:40, 30 September 2015 (UTC)[reply]

Does this source answer the question?: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900002488.pdf -- Ssilvers (talk) 23:06, 30 September 2015 (UTC)[reply]
Hmm, I did encounter this source. I'm not sure. It seems that all Gemini spacecraft were manned (except for test flights), and low Earth orbit. From the Apollo Lunar Module page, it says: "Power was initially to be produced by fuel cells built by Pratt and Whitney similar to the CSM, but in March 1965 these were discarded in favor of an all-battery design." And the Apollo Command Module was manned.
Looking at the definition on the NASA site of space probe: "A probe is a spacecraft that travels through space to collect science information. Probes do not have astronauts. Probes send data back to Earth for scientists to study." Lcaa9 (talk) 05:22, 6 October 2015 (UTC)[reply]
I removed the word "probes" from the article. Do you suggest any other changes? -- Ssilvers (talk) 07:04, 6 October 2015 (UTC)[reply]
Thanks. Nope, that's it. Lcaa9 (talk) 04:24, 7 October 2015 (UTC)[reply]

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Adding solid acid fuel cells

I'd like to suggest adding solid acid fuel cells under "types of fuel cells." The first proof-of-concept was developed in 2000 Haile, Sossina M.; Boysen, Dane A.; Chisholm, Calum R. I.; Merle, Ryan B. (19 April 2001). "Solid acids as fuel cell electrolytes". Nature. 410: 910–913. doi:10.1038/35073536. Retrieved 5 July 2016. and subsequent versions have since demonstrated lifetimes in the thousands of hours.Haile, Sossina M.; Chisholm, Calum R. I.; Sasaki, Kenji; Boysen, Dane A.; Uda, Tetsuya (2007). "Solid acid proton conductors: from laboratory curiosities to fuel cell electrolytes". Faraday Discussions. 134. Royal Society of Chemistry: 17–39. doi:10.1039/B604311A. Retrieved 5 July 2016. Several science magazines have written about the technology.Bullis, Kevin (21 October 2010). "Cheap Diesel-Powered Fuel Cells". MIT Technology Review. Retrieved 5 July 2016."Diesel: The Fuel of the Future?". Discovery News. 11 February 2013. Retrieved 5 July 2016.Olsen, Claude R.; Lie, Else (8 October 2010). "Running fuel cells on biodiesel". The Research Council of Norway. Retrieved 5 July 2016. --Ldajose (talk) 22:57, 5 July 2016 (UTC)[reply]

Has the technology been commercialized and deployed widely yet? -- Ssilvers (talk) 05:33, 6 July 2016 (UTC)[reply]

FCEV section self-contradictory

The section on Fuel cell electric vehicles says "General Motors and its partners estimated that per mile traveled, a fuel cell electric vehicle running on compressed gaseous hydrogen produced from natural gas could use about 40% less energy and emit 45% less greenhouse gasses than an internal combustion vehicle." Later it quotes Joseph Romm as claiming that FCVs aren't green because of escaping methane during natural gas extraction and when hydrogen is produced.

Wikipedia is not very helpful when it gives apparently contradictory information without explaining the contradiction, since then people can prove whatever they want by cherry-picking from Wikipedia. Is there some sense in which both GM and Romm could be right? Vaughan Pratt (talk) 17:16, 17 July 2016 (UTC)[reply]

Both can be right. The General Motors quotation relates to comparisons of efficiency and emissions of vehicles. The Joseph Romm quotation relates to the process of producing hydrogen at a plant. This hydrogen could then be used to refuel a FCEV. Note that other methods of producing hydrogen are in use. — Preceding unsigned comment added by 82.6.19.153 (talk) 13:42, 25 October 2016 (UTC)[reply]

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Citation for startup time of solid oxide fuel cells (SOFC)

The article states that the startup time of a solid oxide fuel cell is 10 minutes, but without any citation. The following document published by fuel cell manufacturer Ceres Power states that the startup time is 30 minutes: http://www.cerespower.com/admin/resources/ecs-trans.-2013-leah-461-70-2.pdf Without a citation for the 10 minutes figure I suggest that the article is updated to state 30 minutes. 82.6.19.153 (talk) 13:51, 25 October 2016 (UTC)[reply]

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