An oxide all-solid-state battery excellent in lithium ion conductivity and joint strength between an anode active material layer and solid electrolyte layer thereof. In the oxide all-solid-state battery, the solid electrolyte layer is a layer mainly containing a garnet-type oxide solid electrolyte sintered body represented by the following formula (1): (Li.sub.x-3y-z, E.sub.y, H.sub.z)L.sub.M.sub.O.sub.; a solid electrolyte interface layer is disposed between the anode active material layer and the solid electrolyte layer; the solid electrolyte interface layer contains at least a Si element and an O element; and a laminate containing at least the anode active material layer, the solid electrolyte interface layer and the solid electrolyte layer has peaks at positions where 2=32.30.5, 37.60.5, 43.80.5, and 57.70.5 in a XRD spectrum obtained by XRD measurement using CuK irradiation.

The present disclosure provides an electrochemical storage cell including a battery. The battery includes an alkali metal anode having an anode Fermi energy, an electronically insulating, amorphous, dried solid electrolyte able to conduct alkali metal, having the general formula A.sub.3-xH.sub.xOX, in which 0x1, A is the alkali metal, and X is at least one halide, and a cathode including a cathode current collector having a cathode Fermi energy lower than the anode Fermi energy. During operation of the electrochemical storage cell, the alkali metal plates dendrite-free from the solid electrolyte onto the alkali metal anode. Also during operation of the electrochemical storage cell, the alkali metal further plates on the cathode current collector.

In accordance with the present invention, deposition of LiCoO.sub.2 layers in a pulsed-dc physical vapor deposition process is presented. Such a deposition can provide a low-temperature, high deposition rate deposition of a crystalline layer of LiCoO.sub.2 with a desired <101> or <003> orientation. Some embodiments of the deposition address the need for high rate deposition of LiCoO.sub.2 films, which can be utilized as the cathode layer in a solid state rechargeable Li battery. Embodiments of the process according to the present invention can eliminate the high temperature (>700 C.) anneal step that is conventionally needed to crystallize the LiCoO.sub.2 layer.

A lithium ion conductor represented by Formula 1:
Li.sub.1+x+2yAl.sub.xMg.sub.yM.sub.2xy(PO.sub.4).sub.3 Formula 1
wherein, in Formula 1, M includes at least one of titanium (Ti), germanium (Ge), zirconium (Zr), hafnium (Hf), and tin (Sn), 0<x<0.6, and 0<y<0.2.

Thin film batteries (TFB) are fabricated by a process which eliminates and/or minimizes the use of shadow masks. A selective laser ablation process, where the laser patterning process removes a layer or stack of layers while leaving layer(s) below intact, is used to meet certain or all of the patterning requirements. For die patterning from the substrate side, where the laser beam passes through the substrate before reaching the deposited layers, a die patterning assistance layer, such as an amorphous silicon layer or a microcrystalline silicon layer, may be used to achieve thermal stress mismatch induced laser ablation, which greatly reduces the laser energy required to remove material.

A lithium-lanthanum-titanium oxide sintered material has a lithium ion conductivity 3.010.sup.4 Scm.sup.1 or more at a measuring temperature of 27 C., the material is described by one of general formulas (1-a)La.sub.xLi.sub.2-3xTiO.sub.3-aSrTiO.sub.3, (1-a)La.sub.xLi.sub.2-3xTiO.sub.3-aLa.sub.0.5K.sub.0.5TiO.sub.3, La.sub.xLi.sub.2-3xTi.sub.1-aM.sub.aO.sub.3-a, and Sr.sub.x-1.5aLa.sub.aLi.sub.1.5-2xTi.sub.0.5Ta.sub.0.5O.sub.3 (0.55x0.59, 0a0.2, M=at least one of Al, Fe and Ga), and concentration of S is 1500 ppm or less. The material is obtained by sintering raw material powder mixture having S content amount of 2000 ppm or less in the entirety of raw material powders for mixture, that is, titanium raw material, lithium raw material, and lanthanum raw material.

Solid-state batteries, battery components, and related processes for their production are provided. The battery electrodes or separators contain sintered electrochemically active material, inorganic solid particulate electrolyte having large particle size, and low melting point solid inorganic electrolyte which acts as a binder and/or a sintering aid in the electrode.

A solid electrolyte suitable for use in all solid type lithium ion secondary battery is made by sintering a form, particularly a greensheet, comprising at least lithium ion conductive inorganic substance powder. The solid electrolyte has porosity of 20 vol % or over.

Set forth herein are electrolyte compositions that include both organic and inorganic constituent components and which are suitable for use in rechargeable batteries. Also set forth herein are methods and systems for making and using these composite electrolytes.

An inorganic ion-conducting membrane treated to modify its surface properties can improve battery cell performance. Membrane surfaces positioned to directly interface with liquid electrolyte(s) on one or both of its major surfaces can be modified to mitigate polarization effects arising from ionic space charges at the solid electrolyte/liquid electrolyte interface when disposed in a battery cell. This surface modification can include fluid treatments that modify the ionic space charge layer to reduce battery cell polarization. The cell polarization can be reduced by at least 10 mV, 50 mV or at least 100 mV as a result of using this surface-modified membrane compared to the same membrane that was not surface-modified.