An all-inorganic electrolyte formulation for use in a lithium ion battery system comprising at least one of each a phosphoranimine, a phosphazene, optionally a monomeric organophosphate and a supporting lithium salt. The electrolyte preferably has a melting point below 0°C, and a vapor pressure of combustible components at 60.6 °C sufficiently low to not produce a combustible mixture in air, e.g., less than 40 mmHg at 30 °C. The phosphoranimine, phosphazene, and monomeric phosphorus compound preferably do not have any direct halogen-phosphorus bonds. A solid electrolyte interface layer formed by the electrolyte with an electrode is preferably thermally stable ≥ 80 °C.

All-inorganic solvents for electrolytes

The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a current collector; a first active material layer disposed on the current collector and including at least one concave portion exposing a portion of the current collector; a stress-relaxing portion disposed in the concave portion; and a second active material layer disposed on the first active material layer and the stress-relaxing portion and separated from the current collector, and a secondary battery including the same.

Anode and secondary battery including same

An electrochemically active material includes composite particles. The composite particles include an alloy material comprising particles The alloy particles have the formula: SixMyCz, where x, y, and z represent atomic % values, and (a) x + y+ z = 100%; (b) x>2y+z; (c) x and y are greater than 0; z is equal to or greater than 0; and (d) M is iron and optionally one or more metals selected from manganese, molybdenum, niobium, tungsten, tantalum, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium. The composite particles also include a carbonaceous coating at least partially surrounding the particles, and an organosilane containing surface modifier bonded to an external surface of the composite particles. The organosilane containing surface modifier does not comprise a terminal amino group.

Anode materials for lithium-ion electrochemcial cells and methods of making and using same

A negative electrode includes a current collector; and a negative active material layer on at least a surface of the current collector. The negative active material layer includes a porous matrix including lithium titanium oxide particles and metal nanoparticles that are alloyable with lithium. An average particle diameter of the lithium titanium oxide particles is at least two times greater than an average particle diameter of the metal nanoparticles.

Negative electrode, lithium battery including the same and method of manufacturing lithium battery

PROBLEM TO BE SOLVED: To provide a negative electrode for a lithium battery, capable of improving life characteristics of a lithium battery.SOLUTION: There is provided a negative electrode for a lithium battery including a current collector and a negative electrode active material layer disposed on at least one surface of the current collector. The negative electrode active material layer includes: a porous matrix including lithium titanate particles; and metal nanoparticles that form an alloy with lithium. An average particle diameter of the lithium titanate particles is at least two times greater than an average particle diameter of the metal nanoparticles.

Negative electrode for lithium battery, lithium battery, method of manufacturing lithium battery and using method of lithium battery

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Negative electrode, lithium battery including the same and method of manufacturing lithium battery

Negative electrode for lithium battery, lithium battery, method of manufacturing lithium battery and using method of lithium battery