Provided herein are methods of forming solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase. The methods involve forming the composite materials from a precursor that is polymerized in-situ after being mixed with the particles. The polymerization occurs under applied pressure that causes particle-to-particle contact. In some embodiments, once polymerized, the applied pressure may be removed with the particles immobilized by the polymer matrix. In some implementations, the organic phase includes a cross-linked polymer network. Also provided are solid-state ionically conductive composite materials and batteries and other devices that incorporate them. In some embodiments, solid-state electrolytes including the ionically conductive solid-state composites are provided. In some embodiments, electrodes including the ionically conductive solid-state composites are provided.

Provided herein are methods of forming solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase. The methods involve forming the composite materials from a precursor that is polymerized in-situ after being mixed with the particles. The polymerization occurs under applied pressure that causes particle-to-particle contact. In some embodiments, once polymerized, the applied pressure may be removed with the particles immobilized by the polymer matrix. In some implementations, the organic phase includes a cross-linked polymer network. Also provided are solid-state ionically conductive composite materials and batteries and other devices that incorporate them. In some embodiments, solid-state electrolytes including the ionically conductive solid-state composites are provided. In some embodiments, electrodes including the ionically conductive solid-state composites are provided.

To provide a method for forming a storage battery electrode including an active material layer with high density in which the proportion of conductive additive is low and the proportion of the active material is high. To provide a storage battery having a higher capacity per unit volume of an electrode with the use of a storage battery electrode formed by the formation method. A method for forming a storage battery electrode includes the steps of forming a mixture including an active material, graphene oxide, and a binder; providing a mixture over a current collector; and immersing the mixture provided over the current collector in a polar solvent containing a reducer, so that the graphene oxide is reduced.

Provided is a negative-electrode active material for a power storage device that has a low operating potential, can increase the operating voltage of the power storage device, and has excellent cycle characteristics. The negative-electrode active material for a power storage device, the negative-electrode active material containing, in terms of % by mole of oxide, 1 to 95% TiO.sub.2 and 5 to 75% P.sub.2O.sub.5+SiO.sub.2+B.sub.2O.sub.3+Al.sub.2O.sub.3+RO (where R represents at least one selected from Mg, Ca, Sr, Ba, and Zn) and containing 10% by mass or more amorphous phase.

The present invention relates to a method for manufacturing of a porous electrode material, wherein the porous electrode material comprises transition metal phosphide on a porous structure comprising transition metal. The method comprises contacting elemental phosphorous and a porous structure comprising transition metal, and heating, in an inert atmosphere, the contacted elemental phosphorous and the porous structure comprising transition metal to a temperature in the temperature range of 300 to 1100 C., thereby reacting at least a part of the phosphorous and at least a part of the transition metal under formation of transition metal phosphide on the surface of the porous structure, thereby forming the porous electrode material. The present invention further relates to a porous electrode material obtainable by the method.

A positive electrode active material for a battery, the positive electrode active material comprising a compound having a crystal structure of space group Fm-3m and represented by composition formula (1): Li.sub.xMe1.sub.Me2.sub.O.sub.2 . . . (1). In the formula, Me1 represents one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, Me2 represents one or more elements selected from the group consisting of B, Si, and P, and the following conditions are met: 0<; 0<; +=y; 0.5x/y3.0; and 1.5x+y2.3.

Provided herein are methods of forming solid-state ionically conductive composite materials that include particles of an inorganic phase in a matrix of an organic phase. The methods involve forming the composite materials from a precursor that is polymerized in-situ after being mixed with the particles. The polymerization occurs under applied pressure that causes particle-to-particle contact. In some embodiments, once polymerized, the applied pressure may be removed with the particles immobilized by the polymer matrix. In some implementations, the organic phase includes a cross-linked polymer network. Also provided are solid-state ionically conductive composite materials and batteries and other devices that incorporate them. In some embodiments, solid-state electrolytes including the ionically conductive solid-state composites are provided. In some embodiments, electrodes including the ionically conductive solid-state composites are provided.

A storage apparatus stores output property data including groups of residual capacities of a secondary battery and output densities corresponding to the residual capacities. In the output property data, both a difference between a residual capacity of a group that includes an extreme value in the output densities and a residual capacity of a group that includes an output density that immediately precedes the extreme value, and a difference between the residual capacity of the group that includes the extreme value in the output densities and a residual capacity of a group that includes an output density that immediately follows the extreme value are less than a difference between output densities of other groups adjacent to each other.

The present invention relates to a silicon-based anode active material and a method of fabricating 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, wherein a carbon-based conductive layer is coated with on outermost surface of the particles; and phosphorus doped in the particles, wherein a content of the phosphorus with respect to a total weight of the particles and the phosphorus doped in the particles have a range of 0.01 wt % to 15 wt %, and a content of the oxygen has a range of 9.5 wt % to 25 wt %.

A nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode has a positive electrode active material containing layer on a positive electrode current collector. The positive electrode active material containing layer includes a positive electrode active material containing lithium iron phosphate coated with amorphous carbon, and a conductive agent. The negative electrode has a negative electrode active material containing layer on a negative electrode current collector. When a coated, state of the lithium iron phosphate with the amorphous carbon is quantitatively expressed by Raman spectroscopy, an intensity area ratio A (C/L) of a diffraction line L that appears at 935 cm.sup.1 to 565 cm.sup.1 in wave number in a Raman spectrum of lithium iron phosphate to a diffraction line C that appears at 965 cm.sup.1 to 1790 cm.sup.1 in wave number in a Raman spectrum of carbon is 400 or more.