A negative electrode slurry composition including (1) clay particles having, a plate-type structure and an average particle diameter (D.sub.50) of 10 nm to 2 m, (2) carboxymethylcellulose (CMC), (3) a negative electrode active material, and (4) an aqueous solvent, wherein a weight ratio of the carboxymethylcellulose and the clay particles is 9.5:0.5 to 4:6. The negative electrode slurry composition is capable of solving problems due to the deterioration of storage stability and dispersibility of solids in a negative electrode slurry composition haying a high solid content.

An anode for a lithium metal battery includes a current collector, a seed layer deposited onto the current collector, the seed layer comprising a seed material selected to promote electrochemical plating of metallic lithium onto the seed layer, a separator, a host structure between the seed layer and the separator, the host structure having void spaces configured to host metallic lithium during charging, a first adhesion layer bonding the host structure to the seed layer, and a second adhesion layer bonding the host structure to the separator.

An electrolyte element (10) comprises a perforated sheet (11) of non-reactive metal such as an aluminium-bearing ferritic steel, and a non-permeable ceramic layer (16b) of sodium-ion-conducting ceramic bonded to one face of the perforated sheet (11) by a porous ceramic sub-layer (16a). The perforated sheet (11) may be of thickness in the range 50 m up to 500 m, and the thickness of the non-permeable ceramic layer (16b) may be no more than 50 m, for example 20 m or 10 m. Thus the electrolyte properties are provided by the non-permeable thin layer (16b) of ceramic, while mechanical strength is provided by the perforated sheet (11). The electrolyte element (10) may be used in a rechargeable molten sodium-metal halide cell, in particular a sodium/nickel chloride cell (20). It makes cells with increased power density possible.

An improvement in electrical conductivity of an aluminum member is provided. A surface film of the aluminum member contains at least one of aluminum oxide and aluminum hydroxide, and the surface film includes not less than 100000 semiconducting portions per square centimeter of a surface of the aluminum member, the semiconducting portions being formed in portions of the surface film where water molecules cohere together.

The present disclosure provides a current collector, an electrode plate and a battery. The current collector includes an insulation layer and at least one conductive layer located on at least one surface of the insulation layer. The insulation layer is used to support the conductive layer, and the conductive layer is used to support an electrode active material layer. The conductive layer has a thickness of D2, and 300 nmD22 m. The current collector further includes a protective layer provided on a surface of the conductive layer facing towards the insulation layer. The current collector according to the present disclosure can increase a short-circuit resistance in case of short circuit caused by the battery being abnormal, thereby resulting in protective effect on the conductive layer, and can also increase the bonding force between the insulation layer and the conductive layer, thereby increasing mechanical strength of the current collector.

A hybrid electrochemical cell is provided. The cell includes two or more electrochemical sub-cells. Each of the electrochemical sub-cells includes an anode receptive space, a cathode receptive space, a separator between the anode receptive space and a cathode receptive space. Any of the materials that are not required to support ion transfer may be replaced with another material engineered to be compatible with the chemistry, sintering properties and mechanical properties of the ceramic electrolyte material. The material is selected to be less expensive and less reactive with the environment than the ceramic electrolyte material.

A pasting carrier for a lead-acid battery. The pasting carrier includes a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat being composed of a plurality of entangled glass microfibers.

A battery comprising an anode comprising anode material in contact with a metal anode current collector. The battery further comprises a cathode comprising cathode material in contact with a cathode current collector comprising a transparent conducting oxide (TCO). The battery further comprises an electrolyte with a pH in a range of 3 to 7.

Disclosed is lithium secondary battery that may include: a positive electrode; a negative electrode; an electrolyte; and a separator positioned between the positive electrode and the negative electrode. The separator may include: a separator substrate; and a fibrous adhesive layer formed on one or both surfaces of the separator substrate.

A battery, in particular a rechargeable battery, with improved deep discharge stability is provided. The battery comprises at least one positive electrode with a positive current collector and at least one negative electrode with a negative current collector. The negative current collector is made of an electrically conductive non-metallic structural material, in particular structural carbon. Preferably, the battery is a lithium or lithium ion battery.