Graphene is formed with a practically uniform thickness on an uneven object. The object is immersed in a graphene oxide solution, and then taken out of the solution and dried; alternatively, the object and an electrode are immersed therein and voltage is applied between the electrode and the object used as an anode. Graphene oxide is negatively charged, and thus is drawn to and deposited on a surface of the object, with a practically uniform thickness. After that, the object is heated in vacuum or a reducing atmosphere, so that the graphene oxide is reduced to be graphene. In this manner, a graphene layer with a practically uniform thickness can be formed even on a surface of the uneven object.

An electrical connection component includes a connecting part that is electrically conductive, and an electrical contact on at least a part of a surface of the connecting part, the electrical contact including a graphene oxide film. The graphene oxide film is graphene oxide or a stack of graphene oxide, and a thickness of the graphene oxide film is 1 nm or more and 50 nm or less. The electrical connection component may be either a male terminal or a female terminal.

The present disclosure describes a metal-ion rechargeable battery that includes a metal (such as zinc, aluminum, potassium, sodium, lithium, or lithium-alloys) anode coated with at least one layer of a two-dimensional (2D) transition metal dichalcogenide (TMD) material. The at least one layer of the 2D TMD material, such as molybdenum disulfide (MoS.sub.2), may be deposited on the metal electrode using electrochemical deposition. The battery may also include a carbon material cathode coated with at least one layer of manganese dioxide (MnO.sub.2) or another electrode material. A method of forming such a battery is also described. Batteries that include metal anodes with 2D TMD material coating may have reduced series resistance, exhibit excellent reversible specific capacity, and have stable performance over many cycles with little to no dendrite formation on the metal anodes.

A product according to one embodiment includes a first layer having a first composition, a first microstructure, and a first density; and a second layer above the first layer, the second layer having: a second composition, a second microstructure, and/or a second density. A gradient in composition, microstructure, and/or density exists between the first layer and the second layer, and either or both of the first layer and the second layer comprise non-spherical particles aligned along a longitudinal axis thereof.

A product according to one embodiment includes a first layer having a first composition, a first microstructure, and a first density; and a second layer above the first layer, the second layer having: a second composition, a second microstructure, and/or a second density. A gradient in composition, microstructure, and/or density exists between the first layer and the second layer, and either or both of the first layer and the second layer comprise non-spherical particles aligned along a longitudinal axis thereof.

The disclosure provides a method comprising inducing a first current between a source of a countercharge and a first electrode, the first current being through an electrolyte. A second current is induced across the first electrode, the second current being transverse to the first current, and the second current inducing a relativistic charge across the first electrode.

The disclosure provides a method comprising inducing a first current between a source of a countercharge and a first electrode, the first current being through an electrolyte. A second current is induced across the first electrode, the second current being transverse to the first current, and the second current inducing a relativistic charge across the first electrode.

The present disclosure is drawn to covers for electronic devices, methods of making the covers, and electronic devices. In one example, a cover for an electronic device comprising: a metal cover substrate having at least a top surface and a bottom surface; a transparent passivation layer on the top surface of the metal cover substrate; a water-borne graphene coating layer on the transparent passivation layer; and an electrophoretic deposition coating layer on the water-borne graphene coating layer.

A coated metal alloy substrate with at least one chamfered edge, a process for producing a coating a metal alloy substrate, and an electronic device having a housing comprising a coated metal alloy substrate are described. The coated metal alloy substrate with at least one chamfered edge comprises a hydrophobic anti-fingerprint layer deposited on the metal alloy substrate, a passivation layer deposited on the at least one chamfered edge, and a water based paint layer deposited on the passivation layer.

A coated metal alloy substrate with at least one chamfered edge, a process for producing a coating a metal alloy substrate, and an electronic device having a housing comprising a coated metal alloy substrate are described. The coated metal alloy substrate with at least one chamfered edge comprises a hydrophobic anti-fingerprint layer deposited on the metal alloy substrate, a passivation layer deposited on the at least one chamfered edge, and a water based paint layer deposited on the passivation layer.