A positive electrode for a nonaqueous electrolyte secondary battery according to the present invention is provided with a porous positive electrode active material layer that contains a positive electrode active material. The positive electrode active material layer is formed so that a logarithmic differential pore volume distribution curve thereof, which shows the relation between pore diameter and pore volume of pores in the positive electrode active material layer, is a single-peak type curve. The distribution curve has a main peak having a full width at half maximum of from 0.001 μm to 0.05 μm inclusive, and the sum of the pore volumes of the pores within a pore diameter range corresponding to the full width at half maximum is 70% or more of the total pore volume.

Disclosed herein are compositions and methods of making novel covalently cross-linked polyimines that are non-malleable under standard conditions but yet may be rendered malleable. Also disclosed is an electrode having an electrolyte component mixed with a self-healing polyimine

An electrolyte includes an organic solvent and a cyclic ester compound that is substituted with a sulfonate group.

Metal-halogen flow battery cell, stack, system, and method, the stack including flow battery cells that each include an impermeable first electrode, an insert disposed on the first electrode and comprising sloped channels, a cell frame disposed around the insert and including a cell inlet manifold configured to provide a metal halide electrolyte and an opposing cell outlet manifold configured to receive the electrolyte, a porous second electrode disposed on the insert, such that sloped separation zones are formed between the second electrode and the channels, conductive connectors electrically connecting the first and second electrodes, and ribs disposed on the second electrode and extending substantially parallel to the channels of the insert. A depth of the channels increases as proximity to the cell outlet manifold increases.

According to one embodiment, a secondary battery including a positive electrode, a negative electrode, and an electrolyte is provided. The negative electrode includes titanium-containing oxide and at least one kind of element selected from the group consisting of B, P, Al, La, Zr, Ge, Zn, Sn, Ga, Pb, In, Bi, and Tl. The electrolyte includes lithium ions and a solvent containing water.

A lithium free battery including a positive electrode, a negative electrode, a separator, and a lithium non-aqueous electrolyte, wherein the negative electrode includes a lithium-metal alloy substrate, and a lithium plate layer on the lithium-metallic alloy substrate. The lithium-metal alloy substrate includes an alloy of lithium (Li) and at least one metal selected from the group consisting of Mg, Ca, Al, Si, Ge, Sn, Pb, As, Sb, Bi, Ag, Zn, Cd, P and Hg, and wherein an alloy ratio of the lithium and the metal is in a range of 4:1 to 1:4 on a weight basis.

An electrochemical cell having a positive electrode; a negative electrode and an electrolyte, wherein the electrochemical cell contains reversible ions in an amount sufficient to maintain a negative electrode potential verses reference level below a negative electrode damage threshold potential of the cell and a positive electrode potential verses reference level above a positive electrode damage threshold potential of the cell under an applied load at a near zero cell voltage state, such that the cell is capable of recharge from the near zero cell voltage state, and method for its production is disclosed.

Provided is a sulfide-based solid electrolyte, including: a Na element; a Ge element; a P element; and a S element, wherein an atomic percentage (at. %) of each of the Na element, the Ge element, the P element, and the S element is as follows when a total of the respective elements is 100 at. %, Na: from 38.8 at. % to 48.4 at. % Ge: from 0.5 at. % to 8.9 at. % P: from 3.9 at. % to 7.9 at. % S: from 43.6 at. % to 48.6 at. %.

A rechargeable electrochemical battery cell with a housing, a positive electrode, a negative electrode and an electrolyte which contains SO.sub.2 and a conducting salt of the active metal of the cell, whereby at least one of the electrodes contains a binder chosen from the group: Binder A, which consists of a polymer, which is made of monomeric structural units of a conjugated carboxylic acid or of the alkali salt, earth alkali salt or ammonium salt of this conjugated carboxylic acid or a combination thereof or binder B which consists of a polymer based on monomeric styrene structural units or butadiene structural units or a mixture of binder A and B.

Provided is a lithium ion battery including a wound electrode body, in which a negative electrode active material layer 24 of the lithium ion battery is formed to be wider than a positive electrode active material layer 14 and has a facing portion 24c which faces the positive electrode active material layer 14 and a non-facing portions 24n which do not face the positive electrode active material layer 14. In a facing center region 24a of the facing portion 24c excluding regions 24b adjacent to the non-facing portion, plural straight measurement lines are set in a region ranging from one end portion to another end portion in the width direction. When the resistance of each measurement line is measured, in all the measurement lines, a highest resistance point is present in a length region of less than 15% from a center C.sub.0 of the facing center region 24a.