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Ngujima-Yin
Ngujima-Yin is a floating production storage and offloading vessel operated by Woodside Energy, producing oil from the Vincent field and the Greater Enfield tieback offshore Western Australia since 2008.
Nhon Trach power station
Nhon Trach power station (Nhà máy điện Nhơn Trạch) is a gas-fired power complex in Dong Nai Province, southern Vietnam, owned by PetroVietnam Power Corporation, with plants commissioned from 2009 to 2025.
Ni-Mo catalyst for alkaline hydrogen evolution
A Ni-Mo catalyst, or NiMo alloy, is a nickel-molybdenum material used as the cathode electrocatalyst for hydrogen evolution in alkaline water electrolysis, reaching overpotentials as low as 10 to 15 mV.
Niagara Mohawk (NIMO)
Niagara Mohawk (NIMO) is Niagara Mohawk Power Corporation, a regulated electric utility in upstate New York with about 3.2 million customers, owned by National Grid since 2002.
Nickel foam
Nickel foam is an open-cell porous metal of interconnected nickel struts with 85–98% porosity, used as an electrode substrate in batteries and alkaline water electrolyzers.
Nickel matte
Nickel matte is an intermediate product of nickel extraction, a mixture of nickel sulfides produced by smelting and refined into Class 1 nickel metal or nickel sulfate.
Nickel oxide hole transport layer
A nickel oxide hole transport layer (NiOx HTL) is a transparent, chemically stable inorganic film used as the hole-selective contact on the illuminated side of inverted perovskite solar cells.
Nickel-iron layered double hydroxide
Nickel-iron layered double hydroxide (NiFe-LDH) is a two-dimensional layered material of nickel hydroxide sheets containing trivalent iron, serving as one of the most active earth-abundant electrocatalysts for oxygen evolution in alkaline water electrolysis.
Nickel-molybdenum catalyst
A nickel-molybdenum (Ni-Mo) catalyst is a non-precious metal electrocatalyst, usually an alloy, used to speed the hydrogen evolution reaction in alkaline water electrolysis as a cheaper alternative to platinum-group cathodes.
Nickel-rich cathode
A nickel-rich cathode is a layered oxide positive electrode for lithium-ion batteries, typically NCM or NCA, where nickel content above 80% raises energy density while reducing costly cobalt.
Nickel-rich NCM 811 cathodes
Nickel-rich NCM 811 cathodes are a lithium nickel manganese cobalt oxide cathode material, LiNi₀.₈Co₀.₁Mn₀.₁O₂, used in electric-vehicle batteries since about 2019 for high energy density despite faster degradation and weaker thermal stability.
Nickel-YSZ electrode
A nickel-YSZ electrode is a composite of metallic nickel and a porous yttria-stabilized zirconia ceramic that serves as the fuel electrode in solid oxide fuel cells and electrolysis cells.
Nickel–cadmium battery
The nickel–cadmium battery, NiCd or Ni-Cd, is a rechargeable 1.2-volt battery invented in Sweden in 1899, once common in consumer electronics and still used in aviation.
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–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.
Nicor Gas
Nicor Gas, legally Northern Illinois Gas Company, is a natural gas distribution utility headquartered in Naperville, serving 2.3 million customers across northern Illinois as the state's largest gas distributor.
Niederaussem power station
Niederaussem power station (Kraftwerk Niederaußem) is a lignite-fired power plant in Bergheim, Germany, owned by RWE since 1963, with unit K setting a 43-percent efficiency record.
NiFeOx oxygen evolution catalyst
NiFeOx is a low-cost nickel-iron oxide or oxyhydroxide electrocatalyst that accelerates the oxygen evolution reaction in alkaline water electrolysis, the leading earth-abundant alternative to IrO2 and RuO2 for hydrogen production.
Nigahi Coal Mine
The Nigahi Coal Mine, formally the Nigahi Opencast Project, is a large opencast coal mine in Singrauli district, Madhya Pradesh, India, operated by Northern Coalfields Limited.
Niger Delta Power Holding
Niger Delta Power Holding Company is a Nigerian power company owned by the federal, state, and local governments, incorporated in 2005 to build the National Integrated Power Project.
Nigeria LNG
Nigeria LNG Limited (NLNG) is a Nigerian liquefied natural gas company incorporated in 1989, owned by NNPC, Shell, TotalEnergies, and Eni, whose Bonny Island plant supplies about 7% of world LNG.
Nigeria LNG Terminal
The Nigeria LNG Terminal is a liquefied natural gas export complex on Bonny Island in Rivers State, Nigeria, operated by Nigeria LNG Limited with six liquefaction trains producing 22 million tonnes annually since 1999.
Nigerian Gas Company
The Nigerian Gas Company (NGC) is a wholly owned subsidiary of Nigeria's NNPC, operating since 1988 and building the Escravos–Lagos Pipeline that carries gas for power and industry.
Nigerian National Petroleum Company Limited
The Nigerian National Petroleum Company Limited, known as NNPC Limited, is Nigeria's fully state-owned national oil company, the commercial successor to the old NNPC corporation since 2022.
Nigerian power sector privatization
Nigerian power sector privatization was the 2010–2013 sale of the state-owned PHCN's generation and distribution companies to private investors, described as Sub-Saharan Africa's most ambitious energy privatization.
Nikaitchuq Oil and Gas Field
Nikaitchuq is an offshore oil field in shallow Beaufort Sea waters off Alaska's North Slope near Oliktok Point, producing heavy oil since 2011 with reserves of 220 million barrels.