A composite electrode comprising a charge-conducting material, a charge-providing material bound to the charge-conducting material, and a plurality of single-walled carbon nanotubes bound to a surface of the charge-providing material. High-capacity electroactive materials that assure high performance are a prerequisite for ubiquitous adoption of technologies that require high energy/power density lithium (Li)-ion batteries, such as smart Internet of Things (IoT) devices and electric vehicles (EVs). Improved electrode performance and lifetimes are desirable. The disclosed electrode can have a Coulombic efficiency of 99% or greater, and a stable capacity retention after 100 cycles or more. Methods of making a composite electrode are disclosed.

The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.

The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.

A method for making an enzyme membrane for a working electrode of a continuous biological monitor includes making an aqueous silicone dispersion and making an acrylic polyol emulsion. The silicone dispersion and the acrylic polyol emulsion are mixed to make a base emulsion. An enzyme is added to the base emulsion to create an enzyme/base emulsion dispersion. The enzyme is selected according to a biological function to be monitored. The enzyme/base emulsion dispersion is applied to the working electrode. The applied enzyme/base emulsion dispersion is cured.

A method for making an enzyme membrane for a working electrode of a continuous biological monitor includes making an aqueous silicone dispersion and making an acrylic polyol emulsion. The silicone dispersion and the acrylic polyol emulsion are mixed to make a base emulsion. An enzyme is added to the base emulsion to create an enzyme/base emulsion dispersion. The enzyme is selected according to a biological function to be monitored. The enzyme/base emulsion dispersion is applied to the working electrode. The applied enzyme/base emulsion dispersion is cured.

The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.

The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.

Disclosed is an electrode precursor composition suitable for preparing a gel electrode, the composition containing an organic solvent, an alkali metal salt, and two or more polymers, the two or more polymers including at least an electronically insulating polymer and an electronically conductive polymer, wherein the electronically conductive polymer is present in a smaller volume fraction than the electronically insulating polymer.

Disclosed is an electrode precursor composition suitable for preparing a gel electrode, the composition containing an organic solvent, an alkali metal salt, and two or more polymers, the two or more polymers including at least an electronically insulating polymer and an electronically conductive polymer, wherein the electronically conductive polymer is present in a smaller volume fraction than the electronically insulating polymer.

The present application relates to a high mechanical strength polymer thin film. The high mechanical strength polymer thin film comprises, by mass percentage, 95%-99% of polyester and 1%-5% of an auxiliary agent. The number average molecular weight of the polyester is 13000 Da to 20000 Da. The molecular number of the polyester with the molecular weight smaller than 5000 Da accounts for 0.5%-5% of the total molecular number of the polyester. A molecular weight distribution index of the polyester is 1.6-2.4.