A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having first and second via holes providing respective first and second electrically conductive pathways extending through the container. A metal lid secured to the open-end of the container by a gold seal provides the cell casing. An electrode assembly housed inside the casing comprises a cathode active material deposited on an inner surface of the ceramic container in contact with a current collector in electrical continuity with one of the conductive pathways. A solid electrolyte, preferably of LiPON (Li.sub.xPO.sub.yN.sub.z), is deposited on the cathode active material followed by an anode active material in contact with the other conductive pathway. The first and second conductive pathways can comprise platinum or gold. That way, the first and second conductive pathways serve as negative and positive terminals for the cell. The negative and positive terminals are configured for electrical connection to a load.

A stretchable composite electrode comprising a carbon nanotube active material composite layer is provided. The stretchable composite electrode comprises a plurality of carbon nanotube film structures and a plurality of active material layers. Each of the plurality of active material layers is located between adjacent carbon nanotube film structures. Each of the plurality of carbon nanotube film structures comprises a plurality of super-aligned carbon nanotube films stacked with each other. A surface of the carbon nanotube active material composite layer comprises a plurality of wrinkles. A stretchable composite electrode using the stretchable composite electrode is also provided.

A battery includes a stacked arrangement of electrochemical cells. Each electrochemical cell is free of a cell housing and includes a bipolar plate having a substrate, a first active material layer formed on a first surface of the substrate, and a second active material layer formed on a second surface of the substrate. Each cell includes a solid electrolyte layer that encapsulates at least one of the active material layers, and an edge insulating device that is disposed between the peripheral edges of the substrates of each pair of adjacent cells. The edge insulating device physically contacts and is directly secured to one of the first surface of one cell and the solid electrolyte layer of an adjacent cell, and is movable relative to, the other of the first surface of the one cell and the solid electrolyte layer of the adjacent cell.

A battery includes a stacked arrangement of electrochemical cells. Each electrochemical cell is free of a cell housing and includes a bipolar plate having a substrate, a first active material layer formed on a first surface of the substrate, and a second active material layer formed on a second surface of the substrate. Each cell includes a solid electrolyte layer that encapsulates at least one of the active material layers, and an edge insulating device that is disposed between the peripheral edges of the substrates of each pair of adjacent cells. The edge insulating device physically contacts and is directly secured to one of the first surface of one cell and the solid electrolyte layer of an adjacent cell, and is movable relative to, the other of the first surface of the one cell and the solid electrolyte layer of the adjacent cell.

A battery includes a battery case including a housing having side walls defining a first open end and a second open end, the battery case including a separate top cover to cover the first open end of the housing and a separate bottom cover to cover the second open end of the housing; a first electrode located within the case; a second electrode located within the case; a first terminal coupled to the first electrode and exposed outside the case; and a second terminal coupled to the second electrode and exposed outside the case.

A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing has a header assembly comprising a ceramic plate, preferably of alumina, that is formed by co-firing a metallic-containing paste residing in first and second via holes extending through a green state ceramic. The ceramic plate is joined to an annular metal ring by a gold-braze to form the header assembly that is secured to an open-ended metal container by a weld to thereby provide the cell casing. The metal-containing fill material resulting from sintering the metallic-containing paste provides a first conductive pathway in an electrically conductive relationship with the anode current collector contacting an anode active material and a second conductive pathway in an electrically conductive relationship with a cathode current collector contacting a cathode current collector. A solid electrolyte, preferably of LiPON (Li.sub.xPO.sub.yN.sub.z), activates the anode and cathode while also serving as a separator keeping the opposite polarity electrodes from contacting each other. Outer surfaces of the first and second conductive pathways are configured for electrical connection to a load.

Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.

A battery of the present disclosure includes: a battery element, the battery element including a first electrode, a solid electrolyte layer, and a second electrode; an insulating member; a lead terminal; and a first solder material. The insulating member encloses the battery element and the first solder material. The lead terminal is electrically connected to the battery element. The first solder material is positioned between the insulating member and the lead terminal.

A battery of the present disclosure includes: a battery element, the battery element including a first electrode, a solid electrolyte layer, and a second electrode; an insulating member; a lead terminal; and a first solder material. The insulating member encloses the battery element and the first solder material. The lead terminal is electrically connected to the battery element. The first solder material is positioned between the insulating member and the lead terminal.

An electricity storage device includes an electricity storage element that is constituted by an electrode body in a positive side and an electrode body in a negative side that face each other while holding a separator; a sealing member that seals a case member accommodating the electricity storage element; at least one electrode protrusion that is either of the electrode bodies, which protrudes from an element end-face of the electricity storage element, at least one current collector plate that is connected to the electrode protrusion; and a terminal member that is installed in the sealing member, a lateral face of the terminal member being connected to a lateral face of the current collector plate.