公开(公告)号：US11329320B2

公开(公告)日：2022-05-10

申请号：US16604237

申请日：2018-05-07

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Yoshimi Kubo ,  Xing Xin ,  Kimihiko Ito

IPC: H01M4/00 ,  H01M10/0569 ,  H01M4/134 ,  H01M10/052 ,  H01M12/08 ,  H01M4/02

Abstract: The present invention has for its object to provide a non-aqueous electrolyte for lithium air batteries capable of simultaneously holding back positive electrode overvoltage, reactions of the negative electrode with the electrolyte and dendrite growth during charging thereby making an improvement in the output performance, and a lithium air battery using the same. The invention provides a non-aqueous electrolyte for lithium air batteries, containing an organic solvent and a lithium salt. The lithium salt contains at least LiX (where X stands for Br and/or I) and lithium nitrate. The molar concentration (mol/L) of LiX in the non-aqueous electrolyte satisfies a range of no less than 0.005 to no greater than 2.0, and the molar concentration (mol/L) of the lithium nitrate in the non-aqueous electrolyte satisfies a range of greater than 0.1 to no greater than 2.0.

公开(公告)号：US20220255085A1

公开(公告)日：2022-08-11

申请号：US17611984

申请日：2020-05-21

Applicant: National Institute for Materials Science

Inventor： Eiki Yasukawa ,  Takashi Kameda ,  Shoichi Matsuda ,  Shoji Yamaguchi ,  Shin Kimura ,  Kimihiko Ito ,  Yoshimi Kubo

IPC: H01M4/86 ,  H01M4/88 ,  H01M4/96 ,  H01M12/06

Abstract: The present invention addresses the problem of providing: a porous carbon structure that has a high micropore volume and can be self-contained; a manufacturing method therefor; a positive electrode material using the same; and a battery (particularly an air battery) using the same. The present invention is a porous carbon structure that is for a positive electrode for an air battery and has voids and a skeleton formed by incorporating carbon, the porous carbon structure satisfying all of the following conditions (a) to (d). (a) The t-plot external specific surface area is within the range of 300m2/g to 1600m2/g; (b) the total volume of micropores having a diameter of lnm to 200 nm is within the range of 1.2 cm3/g to 7.0cm3/g; (c) the total volume of micropores having a diameter of lnm to 1000 nm is within the range of 2.3cm3/g to 10.0 cm3/g; and (d) the overall porosity is within the range of 80% to 99%.

公开(公告)号：US10431823B2

公开(公告)日：2019-10-01

申请号：US15310161

申请日：2015-07-30

Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE

Inventor： Hiroaki Kumakura ,  Shujun Ye ,  Akira Hasegawa ,  Yoshimi Kubo ,  Eiki Yasukawa ,  Akihiro Nomura

IPC: H01M4/58 ,  B01J23/50 ,  C01B35/04 ,  H01B12/04 ,  H01B13/00 ,  H01M4/48 ,  B01J35/00 ,  B01J35/02 ,  H01M4/36 ,  H01M4/485 ,  H01M4/62 ,  H01M10/0525 ,  B01J37/08 ,  B01J21/18 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M10/052 ,  C01B32/05 ,  H01M4/02

Abstract: Provided is a method for manufacturing a base material powder having a carbon nanocoating layer, the method including adding a polycyclic aromatic hydrocarbon to a base material powder, heating the mixture to a temperature that is higher than or equal to the boiling point of the polycyclic aromatic hydrocarbon and is lower than or equal to the relevant boiling point temperature+300° C., and that is higher than or equal to the thermal decomposition temperature of the polycyclic aromatic hydrocarbon, and thereby coating the surface of the base material powder with a layer of carbon having a thickness of 0.1 nm to 10 nm. According to the method, when a source of carbon that covers a base material powder is appropriately selected, the base material powder having the carbon nanocoating layer can be provided, which does not have a possibility of causing inconveniences in the applications of a final manufactured product of the base material powder and exhibits satisfactory productivity of the base material powder, and from which a modified final manufactured product is obtained.

公开(公告)号：US09564645B2

公开(公告)日：2017-02-07

申请号：US14358885

申请日：2012-11-21

Applicant: National Institute for Materials Science

Inventor： Kimihiko Ito ,  Yoshimi Kubo

IPC: H01M8/04 ,  H01M2/02 ,  H01M10/48 ,  H01M12/08 ,  H01M2/34 ,  H01M2/10 ,  H01M10/052

CPC classification number: H01M8/04089 ,  H01M2/024 ,  H01M2/0255 ,  H01M2/1016 ,  H01M2/1072 ,  H01M2/1094 ,  H01M2/345 ,  H01M2/348 ,  H01M8/0432 ,  H01M8/0438 ,  H01M8/04753 ,  H01M10/052 ,  H01M10/48 ,  H01M12/08 ,  H01M2200/00 ,  Y02E60/128 ,  Y02E60/50

Abstract: A containment vessel of a thin lithium-air battery with improved safety is provided. By using the containment vessel, an explosive reaction (ignition) of the electrolyte including lithium metal or ion can be suppressed. The containment vessel (1001) includes: a containment chamber (201) containing the thin lithium-air battery (101). It further includes: a first gas pipe (202B) and a second gas pipe (202D) communicated with an inside of the containment chamber (201); a third gas pipe (202A) and a fourth gas pipe (202C) communicated with an inside of the thin lithium-air battery (101); and a valve (204C) that is provided to the third gas pipe (202A) and controls opening and closing of communication to the containment chamber (201), wherein an inert gas supply source is provided to the first gas pipe (202B), and an air or oxygen supply source is provided to the third gas pipe (202A).

Abstract translation: 提供了具有改善的安全性的薄锂电池的安全壳。 通过使用容纳容器，可以抑制包含锂金属或离子的电解质的爆炸性反应（点燃）。 容纳容器（1001）包括：容纳薄锂电池（101）的容纳室（201）。 其还包括：与容纳室（201）的内部连通的第一气体管道（202B）和第二气体管道（202D）; 与薄锂电池（101）的内部连通的第三气体管道（202A）和第四气体管道（202C）; 以及阀（204C），其设置在所述第三气体管道（202A）上并且控制与所述容纳室（201）的连通的开闭，其中，在所述第一气体管道（202B）上设置惰性气体供给源，以及 向第三气体管道（202A）提供空气或氧气供给源。

公开(公告)号：US20150024291A1

公开(公告)日：2015-01-22

申请号：US14358885

申请日：2012-11-21

Applicant: National Institute for Materials Science

Inventor： Kimihiko Ito ,  Yoshimi Kubo

IPC: H01M8/04 ,  H01M2/02 ,  H01M10/48 ,  H01M12/08

CPC classification number: H01M8/04089 ,  H01M2/024 ,  H01M2/0255 ,  H01M2/1016 ,  H01M2/1072 ,  H01M2/1094 ,  H01M2/345 ,  H01M2/348 ,  H01M8/0432 ,  H01M8/0438 ,  H01M8/04753 ,  H01M10/052 ,  H01M10/48 ,  H01M12/08 ,  H01M2200/00 ,  Y02E60/128 ,  Y02E60/50

Abstract: A containment vessel of a thin lithium-air battery with improved safety is provided. By using the containment vessel, an explosive reaction (ignition) of the electrolyte including lithium metal or ion can be suppressed. The containment vessel (1001) includes: a containment chamber (201) containing the thin lithium-air battery (101). It further includes: a first gas pipe (202B) and a second gas pipe (202D) communicated with an inside of the containment chamber (201); a third gas pipe (202A) and a fourth gas pipe (202C) communicated with an inside of the thin lithium-air battery (101); and a valve (204C) that is provided to the third gas pipe (202A) and controls opening and closing of communication to the containment chamber (201), wherein an inert gas supply source is provided to the first gas pipe (202B), and an air or oxygen supply source is provided to the third gas pipe (202A).

Abstract translation: 提供了具有改善的安全性的薄锂电池的安全壳。 通过使用容纳容器，可以抑制包含锂金属或离子的电解质的爆炸性反应（点燃）。 容纳容器（1001）包括：容纳薄锂电池（101）的容纳室（201）。 其还包括：与容纳室（201）的内部连通的第一气体管道（202B）和第二气体管道（202D）; 与薄锂电池（101）的内部连通的第三气体管道（202A）和第四气体管道（202C）; 以及阀（204C），其设置在所述第三气体管道（202A）上并且控制与所述容纳室（201）的连通的开闭，其中，在所述第一气体管道（202B）上设置惰性气体供给源，以及 向第三气体管道（202A）提供空气或氧气供给源。