Abstract:
A nonaqueous electrolyte secondary battery, which contains: an anode capable of accumulating or releasing metal lithium, or a lithium ion, or both; a cathode relative to the anode; and a nonaqueous electrolyte, in which a lithium salt is dissolved in a nonaqueous solvent, wherein, after repeating charge of the nonaqueous electrolyte secondary battery to an overcharge region and discharge for the charge 20 times, a charge capacity of the nonaqueous electrolyte secondary battery for 21st charge is a capacity equal to or greater than 100% SOC (State of Charge), where 100% SOC is an arbitrary capacity indicating that electric potential of the anode is reduced by 5% or greater based on a relative value, compared to electric potential thereof when SOC is 0%.
Abstract:
Electrodes for energy storage devices comprising compounds of formula (1) or oligomers or polymers comprising units derived from compounds of formula (1) and/or (2) as repeating unit or as part of the repeating units.
Abstract:
A method for preparing graphene-based conducting nano-composite film includes the steps of, providing a graphite source and oxidizing the graphite source to form graphite oxide solution, creating a dispersion of the graphite oxide solution in a liquid, thickening the graphite oxide solution to form a graphite oxide gel, providing a deposition solution and dipping it in the graphite oxide gel, providing a substrate, and, applying an electric field across at least a portion of the deposition solution dipped in the graphite oxide gel for depositing at least one portion of graphene from the graphite oxide gel and the deposition solution on the substrate.
Abstract:
Electrolyte compositions comprising fluorinated acyclic carboxylic acid esters, fluorinated acyclic carbonates, and/or fluorinated acyclic ethers; co-solvents; and certain film-forming chemical compounds are described. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries where they provide the improved performance of a combination of high capacity and high cycle life.
Abstract:
A process and system for obtaining homogenous distribution of carbon nanotubes in solid or viscous matrices and products produced thereby, typically carbon nanotubes distributed in lead-oxide matrices usable as electrode components in lead-acid batteries.