Disclosed are a high-temperature capacitive energy storage film having a structure in which graphene fluoride (GF) is sandwiched between aramid nanofibers (ANFs) and a method of manufacturing the same.

The present disclosure relates to solid-state electrolytes and methods of making the same. The method includes admixing a sulfate precursor including one or more of Li.sub.2SO.sub.4 and Li.sub.2SO.sub.4.H.sub.2O with one or more carbonaceous capacitor materials. The first admixture is calcined to form an electrolyte precursor that is admixed with one or more additional components to form the solid-state electrolyte. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is about 1:2, the electrolyte precursor consists essentially of Li.sub.2S. When a ratio of the sulfate precursor to the one or more carbonaceous capacitor materials in the first admixture is less than about 1:2, the electrolyte precursor is a composite precursor including a solid-state capacitor cluster including the one or more carbonaceous capacitor materials and a sulfide coating including Li.sub.2S disposed on one or more exposed surfaces of the solid-state capacitor cluster.

A prelithiated anode may include a current collector may include a metal oxide layer. Prelithiated anodes may in addition include a lithiated storage layer overlaying the metal oxide layer. The lithiated storage layer may be formed by incorporating lithium into a continuous porous lithium storage layer may include at least 80 atomic % silicon. The lithiated storage layer may include less than 1% by weight of carbon-based binders. The lithiated storage layer may further include lithium in a range of 1% to 90% of a theoretical lithium storage capacity of the continuous porous lithium storage layer. Batteries may include the prelithiated anode.

An ingestible gastrointestinal phototherapy device has a spherocylindrical body of non-digestible material having a cylindrical midsection and transparent light portals at ends thereof. The cylindrical midsection has control circuitry and a power source therein and each light portal is transparent and comprises an array of bioactive light source elements therein emitting bioactive light therefrom and being operably coupled to the control circuitry and power source.

An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the conductive polymer is configured to be doped and dedoped with anions. The electrolytic solution contains (a) a first salt of a lithium ion and a first anion and (b) a second salt of a lithium ion and a second anion. The first anion is a bis(sulfonyl)imide anion containing fluorine.

An electrochemical device includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolytic solution. The positive electrode active material contains a conductive polymer, and the conductive polymer is configured to be doped and dedoped with anions. The electrolytic solution contains (a) a first salt of a lithium ion and a first anion and (b) a second salt of a lithium ion and a second anion. The first anion is a bis(sulfonyl)imide anion containing fluorine.

A conductive composite structure having a metal substrate and a conductive film on a surface of the metal substrate, the conductive film including a layered material of one or plural layers; the one or plural layers being a layer body represented by M.sub.mX.sub.n, where M is at least one metal of Group 3, 4, 5, 6 or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; n is not less than 1 and not more than 4; and m is more than n but not more than 5, and a modifier or terminal T exists on a surface of the layer body; and a residue derived from an organic compound having a hydroxyl group, a carbonyl group, or a combination thereof and having 2 to 8 carbon atoms, is bonded to each of the surface of the metal substrate and a surface of the layer body.

A composite material is provided. The composite material includes carbon layers and metal compound layers alternately and repeatedly stacked. Each of the metal compound layers includes molybdenum and selenium. When the composite material is used as a positive active material for a lithium selenium secondary battery, selenium is separated from the metal compound layer through a preliminary charge/discharge process. In addition, the composite material may be used as negative active materials of a lithium ion battery and a lithium ion capacitor. Furthermore, the composite material may be used as an active material of a positive electrode of the lithium selenium secondary battery.

The purpose of the present technology is to provide an electrode for power storage device and a power storage device that make it possible to involve more lithium ions in a charge-discharge reaction. A lithium-ion secondary battery has: a positive electrode current collector; a positive electrode active material layer on the positive electrode current collector; a negative electrode current collector; and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer has a carbon nanowall. The carbon nanowall is capable of involving, in the charge-discharge reaction, two or more lithium ions per carbon atom in a single charge or discharge.

The purpose of the present technology is to provide an electrode for power storage device and a power storage device that make it possible to involve more lithium ions in a charge-discharge reaction. A lithium-ion secondary battery has: a positive electrode current collector; a positive electrode active material layer on the positive electrode current collector; a negative electrode current collector; and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer has a carbon nanowall. The carbon nanowall is capable of involving, in the charge-discharge reaction, two or more lithium ions per carbon atom in a single charge or discharge.