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Batteries and energy storage

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Shuopu New Materials

Shuopu New Materials, formally Hunan Shuopu New Materials Co. (湖南烁普新材料有限公司), was a Chinese manufacturer of wet-process lithium-ion power battery separators in Changsha, Hunan, founded in 2017.

Sila Nanotechnologies

Sila Nanotechnologies, or Sila, is an American battery materials company in Alameda, California, founded in 2011, whose Titan Silicon anode material raises energy density about 20 percent.

Silicon anode

A silicon anode is a lithium-ion battery electrode using silicon instead of graphite, storing roughly ten times more lithium but limited by its large volume change.

Silicon monoxide composite anode

A silicon monoxide composite anode is a lithium-ion battery negative electrode made of silicon monoxide (SiO) blended with graphite and carbon, storing more lithium than graphite.

Silicon nanowire anode

A silicon nanowire anode is a lithium-ion battery negative electrode made of silicon wires, offering about ten times graphite's capacity while managing silicon's large volume change during charging.

Silicon-carbon composite anode

A silicon-carbon composite anode is a lithium-ion battery anode material in which silicon, offering far more capacity than graphite, is held in a carbon matrix that buffers its swelling.

Silver-oxide battery

A silver-oxide battery is a non-rechargeable button cell using silver oxide and zinc electrodes to deliver a nearly constant 1.55 volts, powering analog quartz watches, calculators, and precision instruments.

Simplo Technology

Simplo Technology Co., Ltd. (新普科技) is a Taiwanese lithium battery-pack manufacturer founded in 1992, supplying over 200 million packs a year, one in three notebook battery packs globally.

Single-crystal cathode material

A single-crystal cathode material is a lithium-ion battery cathode in which each active particle is one continuous crystal, avoiding grain-boundary cracking for longer cycle life and stability.

Single-crystal lithium iron phosphate cathodes

Single-crystal lithium iron phosphate (LiFePO₄, LFP) cathodes are lithium-ion battery cathode materials in which each particle is one continuous olivine crystal, grown as nanoscale plates or rods.

Single-ion conducting polymer electrolyte

Single-ion conducting polymer electrolytes (SICPEs) are solid polymer electrolytes in which anions are immobilized, giving a cation transference number near 1, pursued mainly for solid-state lithium-metal batteries.

Sinoma Lithium Battery Separator (Zhongcai Lithium Film)

Sinoma Lithium Battery Separator (中材锂膜) is a Chinese maker of wet-process lithium battery separators, founded in 2016 as a subsidiary of Sinoma Science & Technology.

Sion Power

Sion Power Corporation is a privately held battery developer in Tucson, Arizona, founded in 1989, that makes Licerion lithium-metal cells, now aimed mainly at defense and aerospace.

Skaland

Skaland is a Norwegian flake graphite mining company, Skaland Graphite AS, based on Senja in Troms, northern Norway, described as Europe's leading producer of crystalline flake graphite.

Smart Battery System

Smart Battery System (SBS) is a set of specifications for rechargeable battery packs that report their own state and predictions to a host, developed by Duracell and Intel in 1995.

Sodium beta-alumina

Sodium beta-alumina is a family of layered ceramics in which sodium ions move rapidly through conduction planes, serving as the solid electrolyte in sodium-sulfur and ZEBRA batteries.

Sodium bis(fluorosulfonyl)imide

Sodium bis(fluorosulfonyl)imide, abbreviated NaFSI, is the sodium analog of LiFSI, a conducting salt in sodium-ion and sodium-metal battery electrolytes prized for high solubility and ionic conductivity.

Sodium hexafluorophosphate

Sodium hexafluorophosphate (NaPF6) is an inorganic sodium salt of the hexafluorophosphate anion and the benchmark electrolyte salt for sodium-ion batteries, though it hydrolyzes with moisture to form hydrofluoric acid.

Sodium iron phosphate

Sodium iron phosphate, NaFePO₄, is a cathode material for sodium-ion batteries with olivine and maricite phases; the related pyrophosphate NFPP entered 10,000-ton production in 2025.

Sodium layered oxide

A sodium layered oxide is a cathode material for sodium-ion batteries, formula NaxTMO2, with sodium ions between TMO6 slabs and O3, P3, P2, and O2 structural types.

Sodium manganese oxide

Sodium manganese oxide, written NaxMnO2, is a family of compounds serving as cathode materials in sodium-ion batteries, valued because sodium and manganese are abundant and inexpensive.

Sodium metal anode

A sodium metal anode is a battery negative electrode of metallic sodium with 1,166 mAh/g capacity and a low redox potential, central to sodium-metal batteries.

Sodium metal chloride battery

A sodium metal chloride battery, best known as the ZEBRA battery, is a high-temperature rechargeable battery using molten sodium, a ceramic separator, and a metal chloride electrode.

Sodium nickel manganese oxide

Sodium nickel manganese oxide, abbreviated NNMO and chiefly the composition NaNi0.5Mn0.5O2, is a layered oxide cathode material for sodium-ion batteries, first used in a full cell in 2011.

Sodium sulfide solid electrolytes

Sodium sulfide solid electrolytes are inorganic sodium-ion conductors such as Na₃PS₄ and Na₃SbS₄, whose soft, highly polarizable lattices give liquidlike conductivity but suffer moisture sensitivity and narrow electrochemical stability windows.

Sodium superionic conductor electrolytes for all-solid sodium cells

Sodium superionic conductor (NASICON) electrolytes, including the sodium zirconium silicophosphate family, are solid materials used as the ion-transport layer in all-solid-state sodium batteries.

Sodium titanate cathode

Sodium titanate cathode is a term sometimes applied to sodium titanate materials, chiefly layered Na₂Ti₃O₇, used as anodes in sodium-ion batteries at about 0.3 V.

Sodium vanadium fluorophosphate

Sodium vanadium fluorophosphate (Na₃V₂(PO₄)₂F₃, commonly abbreviated NVPF) is a polyanionic cathode material for sodium-ion batteries, first synthesized in 1999 and used in TIAMAT's commercial cells.

Sodium vanadium phosphate

Sodium vanadium phosphate, abbreviated NVP, is a NASICON-family compound used as a cathode material in sodium-ion batteries, with a 3.4 V operating voltage and 117.6 mAh/g theoretical capacity.

Sodium-air battery

A sodium-air battery is a metal-air electrochemical cell that oxidizes a sodium anode and reduces oxygen at the cathode, studied as an inexpensive, high-energy alternative to lithium-ion batteries.