Talk:Nickel–iron battery

message: :NiFe has low power density, and lowest energy density of all rechargeable systems.
This does not stand to reason. NiCd has double the power density of lead, and it would surprise me if NiFe would be significantly worse. -- Egil 19:17, 23 January 2006 (UTC)
replies: text: It's the case, remember it's a mass/energy ratio, but I'll leave it out 'till I dig up a ref. --DV8 2XL 19:26, 23 January 2006 (UTC)
replies: text: lead acid 30 Wh/kg, so NiFe is at least better than that, if the 50 Wh/kg on this page is correct.Greglocock 22:44, 27 November 2006 (UTC)
replies: text:  This article is about the type generally.  There are two fatal flaws with picking a random battery out of a catalog and declare that to be the energy/power density for the entire type.  #1 you must compare applications. BeUtilityFree is for homepower, where energy/power density just doesn't matter, so it's intentionally neglected in favor of stout construction and huge electrolyte reserves.  A nickel-iron battery optimized for an electric airplane would be built quite differently.  #2 compare similar eras of design. Other battery types have had billions of dollars in research to use modern technology to adapt them to modern sensibilities, nickel-iron has not changed since 1925, so not a valid comparison.  — Preceding unsigned comment added by 174.62.117.228 (talk) 07:46, 7 May 2013 (UTC)
thread_title: Undocumented claim removed

message: The external link to 'Modern nickel-iron battery data' is 404 for me at 22-10-2006. 17 PM CET. Can somebody look into that?
It works for me at 26-11-2006 11 AM CST.
The external links to www.beutilityfree.com all lead to a "spam?" page. The wayback machine doesn't have any useful pages and the only page that leads to anything is May 25, 2005.  —Preceding unsigned comment added by Woodsjay (talk • contribs) 12:44, 17 May 2010 (UTC)
thread_title:  External links 

message: I do not have access anything but the abstract, but the article should probably be changed to reflect their findings. Key points are 120 Wh/kg and 15 kW/kg, the use of Iron oxide/graphene hybrid anode, and the use of nanoscale material to achieve this result.
-76.237.229.23 (talk) 01:50, 9 July 2012 (UTC)
thread_title:  Nature communications article 

message: There are 6 references to  "A description of the Chinese nickel–iron battery from BeUtilityFree" but the link is 404  — Preceding unsigned comment added by WBrando (talk • contribs) 15:51, 25 March 2014 (UTC)
thread_title:  All BeUtilityFree references are 404 

message: The top right section of the page shows Energy Density data, with no supporting calculations.  These may be estimates?  
Energy Density data(Watt hrs per kilogram)can be found here:  http://ironedison.com/images/Spec%20Sheets/Test%20Results/Energy%20Density%20Iron%20Edison%20Nickel%20Iron%20NiFe%20Battery.pdf  — Preceding unsigned comment added by WBrando (talk • contribs) 15:57, 25 March 2014 (UTC)
thread_title:  Energy Density data has no calculations 

message: This is clearly incorrect since GE got sued for infringing on Jungner’s patent Jungner can’t have been unknown in the US.  — Preceding unsigned comment added by 83.233.2.6 (talk) 20:34, 17 February 2020 (UTC)
thread_title:  ”Jungner's work was largely unknown in the US until the 1940s, when nickel–cadmium batteries went into production there” 

message: Reference to "gassing" but actually per https://en.m.wikipedia.org/wiki/Standard_electrode_potential_(data_page) it is because Iron and Hydrogen are both  -.8 volts in alkaline solution. Gas has to come from something, which is the Water in Potassium Hydroxide solution. Hence "charging does not affect electrolyte is false. Both Potassium and Lithium Hydroxide rapidl absorb Carbon Dioxide from air, and effect of Carbonate contamination should be part of battery life narative. Note "Oxygen" is not transferred and even in alkaline solution the OH(-) is not as significant as H+ transfer. So NiO(OH) absorbs H+ to Ni(OH)2 like intercalcation of Lithium in Li-NiO2 batteries. TaylorLeem (talk) 22:35, 13 October 2021 (UTC)
thread_title:  Missing info 

message: — Assignment last updated by Xj416 (talk) 02:17, 3 December 2022 (UTC)
thread_title: Wiki Education assignment: Research Process and Methodology - FA22 - Sect 201 - Thu