Talk:Fuel cell/Archive 4

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 * Added archive https://web.archive.org/20140701204431/http://www.fctec.com/fctec_types_sofc.asp to http://www.fctec.com/fctec_types_sofc.asp
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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)


 * 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)


 * 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)


 * I removed the word "probes" from the article. Do you suggest any other changes?  -- Ssilvers (talk) 07:04, 6 October 2015 (UTC)


 * Thanks. Nope, that's it. Lcaa9 (talk) 04:24, 7 October 2015 (UTC)

External links modified
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 * Added archive http://web.archive.org/web/20160216192143/http://personal.cityu.edu.hk/~kwanshui/Paper/IJHE2.pdf to http://personal.cityu.edu.hk/~kwanshui/Paper/IJHE2.pdf
 * Added archive http://web.archive.org/web/20121003154509/http://www.naval-technology.com/projects/type_212/, to http://www.naval-technology.com/projects/type_212/,
 * Added archive http://web.archive.org/web/20110612230321/http://www.iec.ch/dyn/www/f?p=102:17:0::::FSP_LANG_ID,FSP_SEARCH_TC:25,105 to http://www.iec.ch/dyn/www/f?p=102:17:0::::FSP_LANG_ID,FSP_SEARCH_TC:25,105

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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 and subsequent versions have since demonstrated lifetimes in the thousands of hours. Several science magazines have written about the technology. --Ldajose (talk) 22:57, 5 July 2016 (UTC)


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

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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)

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)

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)

External links modified
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Fuel Cells Are Not Necessarily Hydrogen-Based
Solid oxide and molten carbonate fuel cells operate using negative ion transport, so the initial definition of fuel cell is incorrect, being too narrow: "A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction of positively charged hydrogen ions with oxygen or another oxidizing agent." In fact, a fuel cell in general is a device for converting chemical energy in fuel to electricity by ion transport across an electrolytic barrier, with hydrogen ions being easiest to transport and therefore hydrogen-ion fuel cells being the most common and most successful to date. Furthermore, negative-ion-transport fuel cells do not necessarily have an "internal reforming" process, and the primary chemical equations for them are those of carbon oxidization. For example, if coal were being used directly in a molten carbonate fuel cell, hydrogen would not even be present. — Preceding unsigned comment added by 198.208.159.19 (talk) 19:31, 3 May 2017 (UTC)

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External links modified (January 2018)
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O2-
In the article, there are some reactions using O2-, where in aqueous solutions I would expect OH-. Maybe this is just a short-cut, where everyone knows how it works, though I believe here it would be nice not to take such short cuts. Gah4 (talk) 21:28, 31 October 2018 (UTC)

Various bus experiments
Hi,. That seems like a lot of information to delete. If you think it's too much detail for the main fuel cell article, I wonder whether moving it to a separate article on, say, "fuel cell bus experiments" might be appropriate. PRRfan (talk) 19:18, 10 September 2019 (UTC)
 * What I deleted was ancient information about projects that were discontinued by 2005. There already is a separate article about it, Fuel Cell Bus Club.  I added instead, current information from the NREL.  I can't imagine why you would delete.  Also, I can't understand why you would delete the word "commentators", which gives at least some color to the extremely vague "some".  Also, why substitute "said" for the literally correct "stated", since they stated it in writing, rather than verbally. -- Ssilvers (talk) 19:30, 10 September 2019 (UTC)
 * The newer info from NREL is, of course, welcome; "commentators" adds no useful distinction; and "said" is shorter, less stuffy, and no less accurate than "stated", which of course is also used for verbal statements. But to my main point here, if all that info is at Fuel Cell Bus Club, then I have no objection to removing it. PRRfan (talk) 20:05, 10 September 2019 (UTC)

Duplication of PEMFC material
I was looking into PEM fuel cells and noticed that there is a large description on PEMFCs both at Proton-exchange membrane fuel cell and here. I'm new to editing Wikipedia but happy to help: how does the community feel this would be best resolved? Richardcw (talk) 19:28, 11 April 2020 (UTC)


 * This article should basically contain a section that is a good summary of the other article, and at the top of the section, there should be a cross-reference that would look like this: Also, if there is anything good in the PEMFC section of this article that is missing from the other article, it should be copied there. For more information, see WP:SUMMARY. Happy editing, -- Ssilvers (talk) 19:43, 11 April 2020 (UTC)

2020
Was the Pike prediction correct? — Preceding unsigned comment added by 36.11.224.129 (talk) 00:07, 5 February 2021 (UTC)