All articles starting with N

Nickel–hydrogen battery

A nickel–hydrogen battery (NiH₂) is a rechargeable battery developed for spacecraft, valued for long cycle life and used on satellites and the Hubble Space Telescope.

Nickel–iron anodes for alkaline water electrolysis

Nickel–iron anodes are alkaline water electrolysis electrodes whose NiFe (oxy)hydroxide surface catalyzes the sluggish oxygen evolution reaction, the leading non-noble-metal alternative to scarce iridium and ruthenium.

Nickel–iron battery

The nickel–iron battery, abbreviated Ni–Fe, is a durable rechargeable battery with iron and nickel electrodes in alkaline electrolyte, independently patented by Thomas Edison and Ernst Waldemar Jungner around 1901.

Nickel–iron oxyhydroxide catalysts on nickel foam for alkaline electrolyzers

Nickel–iron oxyhydroxide catalysts grown directly on porous nickel foam are self-supported, precious-metal-free anode electrodes for the oxygen evolution reaction in alkaline water electrolysis, the standard non-noble benchmark.

Nickel–iron oxyhydroxide OER catalysts

Nickel–iron oxyhydroxide OER catalysts, usually written NiFeOOH, are earth-abundant materials that catalyze the oxygen evolution reaction in alkaline water electrolysis and are leading alternatives to noble-metal catalysts like IrO2 and RuO2.

Nickel–metal hydride battery

A nickel–metal hydride (NiMH) battery is a rechargeable 1.2 V cell storing hydrogen in a metal alloy, with higher capacity than NiCd and long use in hybrid vehicles.

Nickel–zinc battery

The nickel–zinc battery (Ni–Zn) is a rechargeable battery using a zinc anode and nickel oxyhydroxide cathode, delivering a higher cell voltage than other nickel-based chemistries.

Nickel(II) oxide

Nickel(II) oxide, also known as nickel monoxide or green nickel oxide, is a green-to-black inorganic compound of nickel and oxygen with the formula NiO, used in pigments, smart windows, and solar cells.

Nickel/photoredox C–sp3–H cross-coupling

Nickel/photoredox C–sp3–H cross-coupling is a dual-catalytic organic method in which a visible-light photocatalyst generates carbon radicals from C–H bonds for nickel to couple with electrophiles.

Nickel/photoredox C(sp3)–C(sp2) cross-coupling

Nickel/photoredox C(sp3)–C(sp2) cross-coupling, or metallaphotoredox catalysis, is a dual-catalytic method joining alkyl carbons to aryl or vinyl carbons, first reported in 2014 by the Molander and Doyle/MacMillan groups.

Nickel/photoredox dual catalytic cross-coupling

Nickel/photoredox dual catalytic cross-coupling is a method for forming carbon–carbon bonds in which a nickel catalyst and a visible-light photocatalyst operate as interwoven cycles, first demonstrated in 2014.

Nickelate superconductors

Nickelate superconductors are nickel oxide compounds that show unconventional superconductivity, beginning in 2019 and studied as a third family of high-temperature superconductors alongside cuprates and iron-based materials.

Nickelback

Nickelback, Canadian rock band formed 1995 in Hanna, Alberta (Village Idiot), based in Vancouver; Chad Kroeger, Mike Kroeger, Ryan Peake, Daniel Adair. Hits "How You Remind Me," "Photograph," "Rockstar"; 50 million albums; Billboard's 2000s rock band of the decade.

Nickelback discography

Nickelback discography: catalog of the Canadian rock band, from Hesher EP and Curb (1996) through Silver Side Up, All the Right Reasons, Dark Horse, Get Rollin' (2022), and the announced Everything Under The Sun (2026).

Nickelodeon

Nickelodeon is an American children's entertainment brand, launched nationally on April 1, 1979 as the first U.S. cable channel for children and home to SpongeBob SquarePants, Avatar, and Rugrats.

Oct 3, 2026

Nickelodeon (1976 film)

Nickelodeon is Peter Bogdanovich's 1976 Columbia-British Lion/EMI comedy, starring Ryan O'Neal, Burt Reynolds, and Tatum O'Neal, about 1910 independent filmmakers fighting the Patents Company, based on Allan Dwan and Raoul Walsh stories.

Nickelodeon (movie theater)

Nickelodeon (movie theater): early 1900s American storefront cinema charging a nickel; first notable one opened by Harry Davis in Pittsburgh, June 19, 1905; about 8,000 existed by 1908.

Nickelodeon All-Star Brawl

Nickelodeon All-Star Brawl (NASB) is a 2021 platform fighter by Ludosity and Fair Play Labs, published by GameMill, with 20 Nickelodeon characters, no launch voice acting or items, rollback netcode, and a 2023 sequel adding voices and crossplay.

Nickelodeon Animation Studio

Nickelodeon Animation Studio, also Nickelodeon Animation, the animation arm of Nickelodeon founded in 1992 as Games Animation; known for SpongeBob SquarePants, Dora the Explorer, and Avatar; became a CBS Studios label in April 2026.

Nickelodeon Games and Sports for Kids

Nickelodeon Games and Sports for Kids (Nick GAS) was a Viacom/MTV Networks digital cable channel (1999–2007) airing classic Nickelodeon game shows like Double Dare and GUTS, plus sports interstitials, later revived as NickGames on Pluto TV.

Nickelodeon Guts

Nickelodeon GUTS, 1992 kids' sports game show hosted by Mike O'Malley and referee Moira Quirk; three contestants in bungee events ending with the Aggro Crag climb; Global GUTS 1995, 2008 reboot.

Nickelodeon Kids' Choice Awards

Nickelodeon Kids' Choice Awards (KCAs), also called Kids' Choice, an annual Nickelodeon awards show where kids vote for favorites in film, TV, and music. Began 1987 as The Big Ballot; orange blimp trophy since 1990; celebrities get slimed, over 11,000 gallons of slime yearly; 2026 hosted by Alex Warren on CBS.

Nickelodeon Movies

Nickelodeon Movies is the film production arm of the Nickelodeon channel, founded February 25, 1995, releasing family films through Paramount Pictures, from Harriet the Spy (1996) and The Rugrats Movie (1998) to SpongeBob, PAW Patrol, and Teenage Mutant Ninja Turtles films.

Nickelodeon Studios

Nickelodeon Studios, at Universal Studios Florida in Orlando, was Nickelodeon's hybrid production facility and park attraction, open June 1990 to 2005, where Double Dare, Clarissa Explains It All, and Legends of the Hidden Temple were taped before park guests.