Kyoto University

Sumitomo Electric Industries, Limited

Toshiyuki Nohira

Shoichiro Sakai

Atsushi Fukunaga

Masatoshi Majima

Tomoyuki Awazu

Rika Hagiwara

Atsushi Yamaguchi

Yoshiki Nishibayashi

Koji Nitta

Shinji Inazawa

Takayasu Sugihara

Kazunori Okada

Kouji Yasuda

Kazuhiko Matsumoto

Seitaro Kobayashi

Kouji Hidaka

Takuya Goto

Kenichiro Tamaki

Tatsuya Ishibashi

A carbon material has at least either a peak related to diamond bonds, or a peak related to diamond-like bonds, appearing in a range of 1250 to 1400 cmin a spectrum measured by Raman scattering spectrometry, and a full width at half maximum of a maximum peak, or each of full widths at half maximum of the maximum peak and a second largest peak, among peaks appearing in the range of 1250 to 1400 cm, has a signal less than 100 cm.

Carbon material and method for manufacturing carbon material

An element recovery method and an element recovery apparatus are provided by which an element containing a high-purity rare earth element can be recovered at low cost. The element recovery method includes the steps of: preparing molten salt containing a rare earth element; and controlling electric potentials in a pair of electrode members at prescribed values while keeping the pair of electrode members in contact with the molten salt, thereby depositing the rare earth element existing in the molten salt on one of the pair of electrode members. In this way, as compared with the conventional wet separation method, an element such as a rare earth element that is to be recovered can be directly recovered from the molten salt in which the element is dissolved, so that the steps of the recovery method can be simplified and reduced in cost.

Element recovery method and element recovery apparatus

A molten salt bath includes at least two types selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, beryllium, magnesium, calcium, strontium, and barium; at least one type selected from the group consisting of fluorine, chlorine, bromine, and iodine; at least one element selected from the group consisting of scandium, yttrium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, rhenium, and lanthanoid; and an organic polymer having at least one type of a bond of carbon-oxygen-carbon and a bond of carbon-nitrogen-carbon. A deposit obtained using the molten salt bath, and a method of producing a metal deposit using the molten salt bath are provided.

Molten salt bath, deposit, and method of producing metal deposit

A molten salt composition is disclosed containing two or more types of molten salt MTFSI whose anion is an imide anion TFSI and whose cation is an alkali metal M exhibits a lower electrolyte melting point and a wider operating temperature range than a simple salt does. This brings about various advantages such as a wider range of materials that are chosen for use in batteries and the like.

Molten salt composition and use thereof

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Kyoto, Japan

Toshiyuki Nohira