An anode formulation containing a plurality of active Si-composite material particles, a plurality of conductive carbon particles and at least one polymer binder that undergoes a cyclization reaction when heated; an anode formed from the anode formulation; a method of making the anode; and an electrochemical energy storage device including the anode, a cathode and an electrolyte including fluorinated carbonate are disclosed.

An anode composition, a lithium secondary battery anode including the same, and a lithium secondary battery including the anode.

According to one embodiment, a secondary battery including a negative electrode. The negative electrode includes a negative electrode current collector and a negative electrode mixture layer. A thickness of the negative electrode current collector is in a range of 8 μm to 18 μm. The negative electrode current collector includes a first current collector end surface extending along a stacking direction. The negative electrode mixture layer includes a niobium-titanium composite oxide, and a first protrusion protruding from the first current collector end surface along a first direction orthogonal to the stacking direction. A protrusion length A1 of the first protrusion satisfies 0 mm<A1≤1.0 mm.

Methods of making an electrolyte for a solid-state battery can include dissolving a lithiated perfluorosulfonic acid in a solvent to form a mixture, stirring the mixture using shear mixing, and heating the mixture to form an electrolyte gel. Methods of making a cathode electrode for a solid-state battery include forming an electrode composition including active materials, stirring the mixture using sheer mixing to reduce particle size and to form an ink, coating the ink on aluminum foil using one of doctor blade, micro gravure, and slot-die, and drying. The electrolyte is applied as an overlayer on the electrode.

A metal-ion battery includes: (1) an anode including aluminum; (2) a cathode including a layered, active material; and (3) an electrolyte disposed between the anode and the cathode to support reversible deposition and dissolution of aluminum at the anode and reversible intercalation and de-intercalation of anions at the cathode.

An anode active material, an anode including the anode active material; and a lithium secondary battery including the anode, the anode active material including a core including a carbonaceous material; and a polycyclic compound on a surface of the core, the polycyclic compound being represented by Formula 1: ##STR00001##

An object of the present invention is to provide a secondary battery having high energy density with long-term life. The present invention relates to a secondary battery comprising a negative electrode comprising a silicon-containing compound and an electrolyte solution comprising a fluorine-containing ether compound, a fluorine-containing phosphoric acid ester, a sulfone compound and a cyclic carbonate compound in a predetermined amount respectively.

The present invention relates to a silicon-based anode active material and a method for manufacturing the same. The silicon-based anode active material according to an embodiment of the present invention comprises: particles comprising silicon and oxygen combined with the silicon, and having a carbon-based conductive film coated on the outermost periphery thereof; and boron doped inside the particles, wherein with respect to the total weight of the particles and the doped boron, the boron is included in the amount of 0.01 weight % to 17 weight %, and the oxygen is included in the amount of 16 weight % to 29 weight %.

An object of the present disclosure is to provide a secondary battery system that functions at high voltage. The present disclosure attains the object by providing a secondary battery system comprising: a fluoride ion battery including a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; and a controlling portion that controls charging and discharging of the fluoride ion battery; wherein the cathode active material layer contains a cathode active material with a crystal phase that has a Perovskite layered structure and is represented by A.sub.n+1B.sub.nO.sub.3n+1-αF.sub.x (A comprises at least one of an alkali earth metal element and a rare earth element; B comprises at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “α” satisfies 0≦α≦3.5; and “x” satisfies 0≦x≦5.5); and the controlling portion controls charging so that a value of F/B in the cathode active material becomes more than 2/n that is in an over-charged state.

This disclosure provides a unique approach for the synthesis of non-stoichiometric, mesoporous metal oxides with nano-sized crystalline wall. The as-synthesized mesoporous metal oxide is very active and stable (durability>11 h) electocatalyst in both acidic and alkaline conditions. The intrinsic mesoporous metal oxide serves as an electrocatalyst without the assistant of carbon materials, noble metals, or other materials, which are widely used in previously developed systems. The as-synthesized mesoporous metal oxide has large accessible pores (2-50 nm), which are able to facilitate mass transport and charge transfer. The as-synthesized mesoporous metal oxide requires a low overpotential and is oxygen deficient. Oxygen vacancies and mesoporosity served as key factors for excellent performance.