Ngk Insulators, Inc.

The Tokyo Electric Power Company, Incorporated

Michitaka Hidaka

Shigeru Hanzawa

Yoshihiko Kurashima

Toshihiko Honda

Kazuhito Furuta

Masaki Shimizu

Akiyasu Okuno

Hideki Rachi

The present invention provides a firing furnace () comprising a combusting means () for combusting a fuel (), a firing furnace main body () for firing a member to be fired and exhausting a combustion gas, and a methane reforming device () for reacting a reforming material () composed of a methane sub fuel for reformation () and steam () with a methane reforming catalyst () filled therein while heating the same by the combustion gas for producing a reformed gas () containing hydrogen and carbon dioxide, capable of cutting back the fuel cost.

Firing furnace and firing method

A current collector positive electrode enabling a NaS battery to be excellent in the charge recovery characteristic and low in internal resistance is provided, which collector has a high resistance layer formed by needle-punching glass fibers with 5 to 15 &#x3bc;m fiber diameter into a felt substrate made of carbon fibers or graphite fibers by needle-punching from one surface of the substrate toward another surface of the substrate. The density of the glass fibers needle-punched into the substrate is gradually decreased in the direction from the above mentioned surface to the other surface of the substrate, and the deepest portions of the needle-punched glass fibers reach the depths of 85 to 100% of the substrate thickness.

Current collector of positive electrode and sodium-sulfur battery using the same

Growing community of inventors

Nagoya, Japan

Michitaka Hidaka