A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF.sub.4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.

A DME-free lithium battery includes a positive electrode, a negative electrode, a separator arranged between the positive electrode and the negative electrode, and a liquid electrolyte composed of a solvent and at least one lithium electrolyte salt and with which the electrode and the separator are impregnated, wherein the solvent includes propylene carbonate (PC) as a first solvent component and 1,3-dioxolane (DOL) as a second solvent component, and the positive electrode and/or the negative electrode have a proportion of carbon black having a BET surface area of at least 1 m.sup.2/g.

A Mg battery has a positive-electrode can, a positive-electrode pellet made of a positive-electrode active material or the like, a positive electrode composed of a metallic net supporting body, a negative-electrode cup, a negative electrode made of a negative-electrode active material, and a separator impregnated with an electrolytic solution and disposed between the positive-electrode pellet and the negative-electrode active material. By adopting a structure that copper contacts the positive-electrode active material, the electrochemical device can be given a large discharge capacity.

A polymer gel electrolyte containing at least a lithium salt and an aprotic solvent, in which an amorphous polymer layer is formed on the surface of an electrode active material.

A lithium-air or lithium-oxygen electrochemical generator comprising at least one electrochemical cell comprising a positive electrode, a negative electrode and an electrolyte conducting lithium ions disposed between the negative electrode and the positive electrode wherein the negative electrode comprises, as active material, a lithium and calcium alloy.

Described are electrolyte compositions comprising a fluorinated solvent, an organic carbonate, a sultone, and optionally a borate. The fluorinated solvent may be a fluorinated acyclic carboxylic acid ester, a fluorinated acyclic carbonate, a fluorinated acyclic ether, or mixtures thereof. The organic carbonate may be fluorinated or non-fluorinated. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.

An electrolyte for a lithium battery and a lithium battery including the electrolyte, the electrolyte including a compound represented by Formula 1 below:

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A lithium-manganese dioxide primary battery and preparation thereof. The battery has a discharge capacity greater than 3C at −40° C., and includes multiple positive plates, multiple negative plates, multiple ceramic separators, an electrolyte and a casing. The positive plates, the negative plates and the separators are laminated in a manner of repeated “positive plate-separator-negative plate-separator” to form a dry cell. The lithium-manganese dioxide primary battery is made by placement of the dry cell into the casing, injection of the electrolyte, primary aging, sealing and secondary aging. The positive plate and the negative plate are graphene-based manganese dioxide positive plate and lithium-carbon composite negative plate, respectively. The front and back surfaces of the positive plate are respectively provided with a positive reserved tab, and the front and back surfaces of the negative plate are respectively provided with a negative reserved tab.

A printed energy storage device includes a first electrode including zinc, a second electrode including manganese dioxide, and a separator between the first electrode and the second electrode, the first electrode, second, electrode, and separator printed onto a substrate. The device may include a first current collector and/or a second current collector printed onto the substrate. The energy storage device may include a printed intermediate layer between the separator and the first electrode. The first electrode, and the second electrode may include 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode and the second electrode may include an electrolyte having zinc tetrafluoroborate (ZnBF.sub.4) and 1-ethyl-3-methylimidazolium tetrafluoroborate (C.sub.2mimBF.sub.4). The first electrode, the second electrode, the first current collector, and/or the second current collector can include carbon nanotubes. The separator may include solid microspheres.

Disclosed are a lithium-iron(II) disulfide battery and a process for preparing the same. The batter includes a shell, a cap, electrolyte and a cell. The shell is connected with the cap to form a closed cavity in which the electrolyte and cell are accommodated; the cell includes a positive electrode ring, a separator, a spacer, a negative electrode lithium sheet, a current collector grid and a steel strip. The negative electrode lithium sheet is set in the positive electrode ring; the negative electrode lithium sheet is separated from the positive electrode ring by the separator; one side of the current collector grid is connected with the negative electrode lithium sheet, and the other side is connected with the cap via the steel strip; the spacer is set between the positive electrode ring and the cap.