Sharp Kabushiki Kaisha Corporation

Sharp Corporation

Dai-ichi Kogyo Seiyaku Co., Ltd.

Research Institute of Innovative Technology for the Earth

Tanaka Chemical Corporation

Lg Chem, Ltd

Naoto Torata

Takehito Mitate

Naoto Nishimura

Motoaki Nishijima

Kazuo Yamada

Kazunari Takeda

Tsutomu Sada

Yumiko Takashima

Kazuaki Minato

Toyoshi Iida

Tetsushi Makino

Shigeyuki Hamano

Akihito Yoshida

Masayuki Inui

Hideaki Yukawa

Tomohiko Inada

Naoyoshi Kameda

Tetsuya Yoneda

Satoshi Okano

Koichi Ui

Kouichi Ui

Masako Kitagawa

Masako Matsuda

Tsutomu C/O Pionics Co Ltd Sada

Yumiko C/O Pionics Co Ltd Yokota

Kazunari C/O Pionics Co Ltd Takeda

The present invention provides a microorganism which possesses the formate dehydrogenase gene and hydrogenase gene and contains an exogenous transcription activator gene for formate hydrogen lyase system, characterized in that said microorganism shows the transcription activator for formate hydrogen lyase system highly expressed therein and shows an improved function to generate hydrogen from formic acid, and a process for producing hydrogen using the microorganism. Utilization of the microorganism of the present invention enables the hydrogen production from an organic substrate to be accomplished on a practical, commercial scale. The hydrogen to be produced by the present invention, which is free of carbon monoxide being causative to poisoning of the electrode catalyst for fuel cells, is useful as a fuel for fuel cells.

Microorganism having the improved gene for hydrogen generation capability, and process for producing hydrogen using the same

A nonaqueous secondary battery comprises a positive electrode, a negative electrode and a separator interposed between the positive electrode and the negative electrode, wherein at least one of the positive electrode and the negative electrode is provided with a current collector composed of a film-like or fibrous resin layer having a conductive layer on both sides, and the separator has a higher thermal deformation temperature than the resin layer.

Nonaqueous secondary battery

A nonaqueous secondary battery comprising a pair of electrodes consisting of a positive electrode and a negative electrode, and a separator interposed between the pair of electrodes, wherein the separator is a laminate formed by stacking in sequence a metal layer, a first resin layer and a second resin layer having a thermal shrinkage percentage smaller than a thermal shrinkage percentage of the first resin layer, and the metal layer is opposed to one of the pair of electrodes.

A hydrogen producing method by culturing a microorganism having a hydrogenase gene, in which a lactic acid biogenetic path and a succinic acid biogenetic path in anaerobic metabolic paths are inactivated, under an anaerobic condition in the presence of organic substrate. The microorganism may further have a formate dehydrogenase gene. The microorganism may bewhich is a facultative anaerobic bacterium.

Microorganism having the improved gene for hydrogen-generating capability, and process for producing hydrogen using the same

A lithium secondary battery which comprises:

Lithium polymer secondary battery

A polymer battery having at least one layer of a positive electrode, at least one layer of a polymer electrolyte retained by a separator and at least one layer of a negative electrode, each of which is in a thin film form, stacked in this order, wherein the entirety of the outer peripheries of the separator and of the negative electrode is positioned outside of the outer periphery of the positive electrode except for a collector tab (provided to the positive electrode so as to protrude from one side of the positive electrode, and the following relationship is satisfied in a portion of the outer peripheries of the separator and of the negative electrode: the length between the end of the negative electrode and the end of the positive electrode (D) &#x3e;the length between the end of the negative electrode and the end of the separator (D).

Polymer battery having the outer peripheries of the separator and negative electrode positioned outside of an outer periphery of the positive electrode

A polymer battery which comprises a negative electrode comprising a carbon material as an active material, an electrolyte layer and a positive electrode comprising a chalcogenide containing lithium as an active material, characterized in that the electrolyte layer comprises an ion-conducting compound and a polymer fiber, and the carbon material comprises the graphite particles having amorphous carbon adhered on the surface thereof. The polymer battery is capable of preventing the decomposition of the ion-conductive material by graphite particles.

Lithium polymer battery with a crosslinked electrolyte

A lithium polymer secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, characterized in that the cell has been subjected to a heat treatment at a temperature of 40 to 60&#xb0; C. after the assembly thereof. The polymer cell is freed of or is reduced in the adverse effect of a residual monomer and initiator on the performance of the cell. The polymer electrolyte is formed by cross-linking polymerization of a precursor monomer for an ion conducting polymer in a non-aqueous electrolyte, and the residual monomer and initiator contained therein is consumed by the heat treatment.

Lithium polymer secondary battery and method for manufacturing the same

In a lithium secondary cell having a negative electrode, a positive electrode and, arranged between the electrodes, a polymer electrolyte layer, the internal resistance of the cell and the interfacial resistance between the electrode and the polymer electrolyte can be reduced by incorporating into the electrode, in advance, a polymer electrolyte precursor solution in a manner such that the electrode has a higher content of the precursor monomer and/or an oligomer thereof than that in the polymer electrolyte layer formed on the electrode.

Lithium secondary cell

A lithium polymer secondary battery comprising a negative electrode, a positive electrode and an electrolyte layer between both electrodes, wherein the negative electrode and the positive electrode each has a solid electrolyte prepared by incorporating an organic electrolytic solution into a polymer, the polymer is obtained by solidifying a precursor solution containing vinylene carbonate and a content of vinylene carbonate in the precursor solution for the positive electrode is smaller than that in the precursor solution for the negative electrode.

Lithium polymer secondary cell

A lithium polymer secondary battery comprising: a negative electrode including a carbonaceous material, as an active material, obtainable by attaching or covering an amorphous carbon on the surface of graphite particle; an electrolyte layer; and a positive electrode having at least a metal oxide containing lithium as an active material, wherein the electrolyte layer comprising: a polymer containing a unit derived from vinylene carbonate; an organic solvent; and lithium salt.

A lithium secondary battery which comprises a negative electrode, a positive electrode, and disposed therebetween a polymer electrolyte comprising an ionically conductive polymer. The polymer electrolyte has a two-layer structure composed of a positive-electrode-side layer and a negative-electrode-side layer. The polymer electrolyte on the positive-electrode side contains a nonaqueous electrolytic solution containing a lithium salt in a higher concentration than that in the polymer electrolyte on the negative-electrode side. The battery is improved in charge/discharge cycling characteristics and high-load discharge characteristics.

Lithium secondary battery

A lithium polymer secondary battery which comprises a negative electrode, a positive electrode, and polymer electrolyte layers united respectively with the two electrodes and differing in viscoelastic behavior. In this battery, conformation to the expansion and shrinkage accompanying charge/discharge is easy and the interfacial resistance between each electrode and the polymer electrolyte is kept low.

A lithium secondary battery includes a positive electrode containing a first solid electrolyte; a negative electrode containing a second solid electrolyte; and a layer of a third solid electrolyte between the positive and negative electrodes.

A polymeric solid electrolyte is composed of a polymer that contains an electrolyte salt and an organic solvent. The organic solvent is composed of a fluorinated organic solvent. The polymer solid electrolyte can retain a sufficiently high ion conductivity and provides excellent safety by exhibiting flame retardancy when heated.

Growing community of inventors

Kashihara, Japan

Naoto Torata