An electrode assembly for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The electrode assembly for the rechargeable lithium battery includes: a negative electrode including a current collector; a negative active material layer; an organic-inorganic composite layer integrated with the negative active material layer, the negative active material layer including an organic layer and an inorganic layer; and a positive electrode, the negative active material layer including a first layer physically contacting the current collector, the first layer including a first carbon-based negative active material, and a second layer on the first layer, including a second carbon-based negative active material, wherein a DD value of the first layer is about 30% to about 90% of a DD value of the negative active material layer, and the DD values are defined by Equation 1.

DD (Degree of Divergence)=(I.sub.a/I.sub.total)*100   Equation 1

Provided is a porous anode active material particle (or multiple porous particles) for a lithium battery, the particle comprising internal pores, having a pore volume of Vp and pore wall surfaces, and a solid portion having a solid volume Va, wherein the volume ratio Vp/Va is from 0.1/1.0 to 10/1.0 and wherein the pores are infiltrated with a graphene material that partially or fully covers the internal pore wall surfaces. The exterior surfaces of graphene-infiltrated porous particles may also be coated with a graphene materials and optionally further coated or encapsulated with a conducting polymer. Also provided is a method of producing graphene-infiltrated porous anode material particles.

The present invention relates to a one-step process for preparation of “in-situ” or “ex-situ” self-organized and electrically conducting polymer nanocomposites using thermally initiated polymerization of a halogenated 3,4-ethylenedioxythiophene monomer or its derivatives. This approach does not require additional polymerization initiators or catalysts, produce gaseous products that are naturally removed without affecting the polymer matrix, and do not leave by-product contaminants. It is demonstrated that self-polymerization of halogenated 3,4-ethylenedioxythiophene monomer is not affected by the presence of a solid-state phase in the form of nanoparticles and results in formation of 3,4-polyethylenedioxythiophene (PEDOT) nanocomposites.

A positive electrode for a power storage device includes: an active material layer; a current collector; and an electrically conductive layer. The active material layer includes an electrochemically active polymer and an electrically conductive agent. The electrically conductive layer is disposed between the active material layer and the current collector and is in contact with the active material layer and the current collector. The thickness of the electrically conductive layer is measured at 10 points spaced apart at 2 μm intervals along a boundary between the current collector and the electrically conductive layer on a cross-section of the positive electrode for a power storage device. The cross-section is perpendicular to a principal surface of the current collector, and the electrically conductive layer is in contact with the principal surface. The average thickness of the electrically conductive layer determined by this measurement is 0.5 to 3.0 μm.

In order to provide an organic radical battery having excellent high power, discharge characteristics at a high current, and cycle characteristics, an electrode having a repeating unit having a nitroxide radical site represented by formula (1-a) and a repeating unit having a carboxyl group represented by formula (1-b) in a range in which x satisfies 0.1 to 10 and using a copolymer having a cross-linked structure as an electrode active material is used for the organic radical battery.

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(wherein in Formulas (1-a) and (1-b), R.sup.1 and R.sup.2 each independently represent hydrogen or a methyl group; and x represents a mol % of Formula (1-b) in the total 100 mol % of Formulas (1-a) and (1-b).)

A positive electrode 1 for a power storage device includes: an active material layer 10; a current collector 20; and an electrically conductive layer 30. The active material layer 10 includes electrochemically active polymer particles 12 and an electrically conductive agent 14. The electrochemically active polymer particles 12 have an average particle diameter of more than 0.5 μm and 20 μm or less. The electrically conductive layer 30 is disposed between the active material layer 10 and the current collector 20 and is in contact with the active material layer 10 and the current collector 20.

A conductive polymer material is provided that includes an electrically conducting monomer and a zwitterionic sulfate chemically attached to the monomer. The electrically conducting monomer is at least one of acetylene, pyrrole, thiophene, phenylenevinylene, paraphenylene and aniline. The zwitterionic sulfonate includes an imidazolium group or an ammonium group. A solid-state battery is also provided that includes the conductive polymer material in an electrode. The solid-state battery includes an anode, a cathode and a solid electrolyte disposed between the anode and the cathode. At least one of the anode and the cathode includes the conductive polymer material.

The present disclosure relates to electroactive materials that are useful for secondary battery electrode materials and the secondary battery device including thereof. Further, the disclosure relates to cathode and anode materials obtained via the polymerization of triptycene-based organic molecules having one or more arylene diimide groups attached forming a crosslinked network.

A sulfur-carbon composite and a lithium secondary battery including the same are discussed. More specifically, a network-shaped coating layer including a conductive polymer is formed on a surface of the sulfur-carbon composite, and thus the conductivity of the sulfur-carbon composite is enhanced and also, lithium ions move freely, and accordingly, when applied to lithium secondary batteries, the sulfur-carbon composite can enhance the performance of batteries.

An energy storage device includes a cathodic material in an activated state; and an anodic material in an activated state; wherein: the cathodic material is covalently attached to, or confined within, a first polymer matrix, the first polymer matrix is configured to prevent or minimize substantial diffusion of the cathodic material in the activated state; and the anodic material is a phenazine, a phenothiazine, a triphenodithiazine, a carbazole, a indolocarbazole, a biscarbazole, or a ferrocene covalently attached to, or confined within, a second polymer matrix, the second polymer matrix is configured to prevent or minimize substantial diffusion of the anodic material in the activated state.