A paper suitable for use as a cell-to-cell flame barrier in a battery, and a battery comprising the paper, the paper comprising 40 to 70 weight percent fibrids and 30 to 60 weight percent mica, based on the total weight of the fibrids and mica in the paper; wherein the fibrids comprise a blend of 80 to 20 weight percent polymer and 20 to 80 weight percent aerogel powder, based on the total weight of the polymer and aerogel powder in the fibrids; the paper having a thickness of 100 to 4000 micrometers.

Apparatus, systems, and methods for making insulated paper products are disclosed.

A process for producing a flaked cellulose-based thermal- and/or acoustic-insulating material includes preparing a cellulose-based pulp and providing a web of paper having a given thickness, starting from the pulp. A coating having a mixture containing a first substance having a flame-retardant function and a second substance having an anti-mould function is applied on the web. The coated web is subjected to a milling operation so as to provide flakes of flaked insulating material.

A process for producing a flaked cellulose-based thermal- and/or acoustic-insulating material includes preparing a cellulose-based pulp and providing a web of paper having a given thickness, starting from the pulp. A coating having a mixture containing a first substance having a flame-retardant function and a second substance having an anti-mould function is applied on the web. The coated web is subjected to a milling operation so as to provide flakes of flaked insulating material.

In a method for making a flexible material, a sheet of graphene oxide-composite paper is subjected to an environment having a relative humidity above a predetermined threshold for a predetermined amount of time. At least one expansion cut is cut in the sheet of graphene oxide-composite paper. A flexible conductive material includes a sheet of graphene oxide-composite paper defining at least one cut passing therethrough and formed it a kirigami structure. A region of the sheet of graphene oxide-composite paper includes reduced graphene oxide.

This precursor sheet for a fuel cell separator comprises a conductive substrate sheet, a dense layer including first graphite particles, and a conduction layer including second graphite particles, wherein the dense layer and the conduction layer include a resin, the first graphite particles have a volume resistivity of 20 m?.Math.cm or greater and a bulk density of 1.7 g/cm.sup.3 or greater when compressed at 30 MPa, and the second graphite particles have a volume resistivity of less than 20 m?.Math.cm and a bulk density of 1.5 g/cm.sup.3 or greater when compressed at 30 MPa. This precursor sheet for a fuel cell separator provides a fuel cell separator that has excellent shapability and good mechanical strength, conductivity, and gas impermeability.

This precursor sheet for a fuel cell separator comprises a conductive substrate sheet, a dense layer including first graphite particles, and a conduction layer including second graphite particles, wherein the dense layer and the conduction layer include a resin, the first graphite particles have a volume resistivity of 20 m?.Math.cm or greater and a bulk density of 1.7 g/cm.sup.3 or greater when compressed at 30 MPa, and the second graphite particles have a volume resistivity of less than 20 m?.Math.cm and a bulk density of 1.5 g/cm.sup.3 or greater when compressed at 30 MPa. This precursor sheet for a fuel cell separator provides a fuel cell separator that has excellent shapability and good mechanical strength, conductivity, and gas impermeability.

A composition and method of preparing a composition is presented wherein the composition comprises cellulose platelets and the cellulose platelets comprise at least 60% cellulose by dry weight, less than 10% pectin by dry weight and at least 5% hemicellulose by dry weight. The composition can be concentrated to at least 25% by weight solids content by pressing under low pressure, whilst retaining the ability to be re suspended within an aqueous medium. The resulting aqueous medium obtains the desired properties of the composition, such as increased viscosity or increased dispersion of pigment particles, for example, to the same extent as the composition before pressing.

A composition and method of preparing a composition is presented wherein the composition comprises cellulose platelets and the cellulose platelets comprise at least 60% cellulose by dry weight, less than 10% pectin by dry weight and at least 5% hemicellulose by dry weight. The composition can be concentrated to at least 25% by weight solids content by pressing under low pressure, whilst retaining the ability to be re suspended within an aqueous medium. The resulting aqueous medium obtains the desired properties of the composition, such as increased viscosity or increased dispersion of pigment particles, for example, to the same extent as the composition before pressing.

Disclosed is a biodegradable container comprising a biodegradable material and a reinforced barrier film coated onto the biodegradable material, wherein the reinforced barrier film comprises graphene nanoplatelets dispersed in a biodegradable polymeric substrate.