Nickel-Iron Battery/Research Development

Did some googling around and making notes, here is what I found :

-apprently their efficiency goes *up* with time over about 2 years 80% as mentioned in the forum, unknown exactly why would be nice to know -see the docs from the manufacturer's of the modern batteries seems like efficiency is reasonably high actually, was not able to determine if the charging efficiency is nearly equal to the round trip efficiency, so the graphs might paint an overly rosy picture, but I think it is pretty close http://www.changhongbatteries.com/Ni-Fe_battery_for_Solar_&_wind_appliances_p53_m2.2.1.html

low quality taken from browser history: http://www.beutilityfree.com/content/index.php?option=com_content&view=article&id=106:Ni-FeFAQ&catid=42:Nickel-Iron%20Batteries http://www.green-trust.org/wordpress/2010/07/14/american-made-nickel-iron-nife-forever-batteries/ http://www.ironcorepower.com.au/page3.php http://www.varta-automotive.com/index.php?id=87 http://www.ehow.com/way_5993981_homemade-edison-cell.html http://ps-survival.com/PS/Batteries/NiMH/Iron-Nickel_Battery_2008.pdf http://www.electro-tech-online.com/renewable-energy/100471-building-good-working-capacity-ni-fe-battery.html http://www.incompliancemag.com/index.php?option=com_content&view=article&id=56:the-lost-almost-technology-of-the-edison-cell&catid=29:just-for-fun&Itemid=138

higher quality http://www.nickel-iron-battery.com/

http://fieldlines.com/board/index.php?topic=144379.0 says "combiner caps" catalytic caps are available http://sustainabledesignupdate.com/2010/02/green-battery-design/ says they have/had a team developing them I emailed them http://apptechdesign.org/contact-us/ as asking for any documentation they can send on their work

http://www.solarpowerforum.net/forumVB/off-grid/4509-nickel-iron-batteries-8.html  on one page here includes list of manufacturers that currently make them

the product pages etc form blog post http://www.uni-regensburg.de/Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/chembox_edison-e.htm more

Swedesh pat.Nos 8.558/1897, 10.177/1899, 11.132/1899, 11.487/1899 and German Patent No.110.210 /1899. US.Pat No.678.722/1901, 692.507/1902 and German patent No 157.290/1901 http://edison.rutgers.edu/patents/01488481.PDF didn't look at http://www.patents.com/us-4330603.html

may be other patents, companies that make them and search freepatentsonline using the advanced search function for assignee name may turn up more and more recent

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This is good stuff, but it shouldn't be on the talk page, it should be in something like Nickel-Iron Batter/Research. - Mark Norton

Oh, I didn't know that page existed. It should be linked to from the nickel iron battery page. I think using "related pages" as done in wikipedia more often would be a good idea. I will do it now. Okay it has been moved and I will add the link in related page section. -gregor

more on nickel iron ChangHong searched on freepatents online nickel iron electrochemical cell nickel iron battery nickel-iron battery nickel iron cell nickel iron secondary cell nickel iron AN/changhong nickel iron AN/varta (changhong website says tehir battery tech is made from varta nickel oxyhydroxide battery at this there are many on nickel zinc batteries too might be useful bu tmost were omitted from notes below nickel oxyhydroxide electrode nickel oxyhydroxide battery

a lot on nickel zinc but since the cathode material is the same might be useful but most were omitted form below since there are so many

went through the first pages of results, got surprisingly few given how old these are, the search hits were usually very low relevance by the end of the first page so didn't continue past there though there were some on nickel zinc

assingee changhong also the related patents thing on the patent webpages might be useful to find even more

maybe email the suppliers through alibaba to see who own the technology base and if they have any documentation

high quality http://www.freepatentsonline.com/3853624.html

http://www.freepatentsonline.com/0827297.htmlthis one number wa sobtained from http://www.beutilityfree.com/content/index.php?option=com_content&view=article&id=106:Ni-FeFAQ&catid=42:Nickel-Iron%20Batteries notice that older patens are not searchable by the contents of the text unfortunately so any other edison patents may not be findable through patent search

battery grade nickel hydroxide http://www.freepatentsonline.com/5788943.html http://www.freepatentsonline.com/7407521.html process to produce nickel hydroxide maybe not useful thogh http://www.freepatentsonline.com/7081319.html preparation of nickel oxyhydrozide with ozone suitable fo use n battery (ozone is easy to produce with high voltage electrodes) http://www.freepatentsonline.com/4064331.html iron electrodes for battereis unk lower quality http://www.freepatentsonline.com/0678722.html edison us patent fist one metioned in wikipedia also appears to be on nicad not nickel iron http://www.freepatentsonline.com/0692507.html second one mentioned appears to be on nicad batteries not nickel iron http://www.freepatentsonline.com/6193871.html forming nickel elecrtode http://www.freepatentsonline.com/6492062.html nickel zinc http://www.freepatentsonline.com/7691531.html nickel hy more nickel zinc tells about nickel oxydydroxide lelectrode though http://www.freepatentsonline.com/6991875.html nother nice=kel zinc http://www.freepatentsonline.com/6261720.html have no idea if this is useful, something about a nickel hydroxide electrode in alkaline battery though I think this is probably be applicable to nickel metal hydride only ther eare many on nickel hydroxide electrodes http://www.freepatentsonline.com/4207383.html iron electrode maybe not useful there also appears to be alot of patents of more generalized approaches to e.g. the mechanical structure of the lectrodes of a secondary flooded cell battery which may be useful , on recombining hydrogen and o2 produceed by overchargning etc. http://www.freepatentsonline.com/5200282.html electrode ratehr than plates if wanted high disshcarge currents m\aybe http://www.freepatentsonline.com/7435395.html on nickel zinc

emailed http://apptechdesign.org/contact-us/ again on may 15asking for documentation on nickel iron20

http://apptechdesign.org/contact-us/ contact them again if they dont answer

more links http://www.youtube.com/watch?v=K84PywMwjZg didn't watch indivudual says has read mulitiple edison patents coudl contact them to ge tnumbers and advice, couldn't find a way through youtube

all things consereed there seem to be very few patents related to nickel iron batteries, but a lot more on nickel zinc for some reason, also this searching through patentsonline did not unearth the edison patents so there is room for improvement in the search method. Also the swedishand german patents should be retireved and translated though I assume they would be in swedish or german so I did not do that. There are probably more edison patents to be uncovered.

What is a "chemical short"? thermal runaway type thing? Nickel iron is known to be prone to thermal runaway need to know the electrochemistry involved here

It appears that as usual the electrochemistry of a good rather than crappy battery is not so simple, especially over a large number of charge/discharge cycles.

Clearly a chemist or someone else with significant expertise is needed here to work out the details.  For example sulfur from vulcanized rubber can contaminate the battery chemistry apparently.  IIRC steel has a small quantities of sulfur in it so using sheet metal as the anode might not work out although that of course remains to be determined....