A lithium titanium sulfide, a lithium niobium sulfide, and a lithium titanium niobium sulfide - National Institute of Advanced Industrial Science and Technology

Title:

A lithium titanium sulfide, a lithium niobium sulfide, and a lithium titanium niobium sulfide

Document Type and Number:

Japanese Patent JP6011989

Kind Code:

B2

Abstract:

The present invention provides a novel lithium titanium sulfide, lithium niobium sulfide, or lithium titanium niobium sulfide that contains a sulfide containing lithium, titanium and/or niobium, and sulfur as constituent elements, and that has excellent charge-discharge performance (especially excellent charge-discharge capacity and charge-discharge potential) useful as a cathode active material or the like for lithium batteries, such as metal lithium secondary batteries or lithium-ion secondary batteries. Particularly preferred are, for example, (1) lithium titanium sulfide containing lithium, titanium, and sulfur as constituent elements and having a cubic rock salt crystal structure, (2) lithium niobium sulfide containing lithium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram, and (3) lithium titanium niobium sulfide containing lithium, titanium, niobium, and sulfur as constituent elements and having a diffraction peak at a specific position in an X-ray diffractogram.

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Inventors:

Atsushi Sakuta
Tomo Takeuchi
Sakaebe Hinatsuri
Kuniaki Tatsumi

Application Number:

JP2015506767A

Publication Date:

October 25, 2016

Filing Date:

March 17, 2014

Export Citation:

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Assignee:

National Institute of Advanced Industrial Science and Technology

International Classes:

C01G23/00; C01G33/00; H01M4/58; H01M10/052; H01M10/0569

Domestic Patent References:

JP2000173589A	2000-06-23
JP2004522674A	2004-07-29
JP2003502265A	2003-01-21
JPH11297359A	1999-10-29
JP2004152659A	2004-05-27
JPH02204312A	1990-08-14
JPS62260719A	1987-11-13

Other References:

JPN6014023297; Ｌｕｂｏｍｉｒ　ＢＥＮＣＯ　ｅｔ　ａｌ．: '"Ｆｉｒｓｔ　Ｐｒｉｎｃｉｐｌｅｓ　Ｃａｌｃｕｌａｔｉｏｎ　ｏｆ　Ｅｌｅｃｔｒｏｄｅ　Ｍａｔｅｒｉａｌ　ｆｏｒ　Ｌｉｔｈｉｕｍ　Ｉｎｔｅｒｃａｌａｔｉｏｎ　Ｂａｔｔｅｒｉｅｓ：　ＴｉＳ２　ａｎｄ　Ｌｉ' Ｊｏｕｒｎａｌ　ｏｆ　Ｓｏｌｉｄ　Ｓｔａｔｅ　ＣｈｅｍｉｓｔｒｙＶｏｌ．１４５, 1999, ｐ．５０３-５１０
JPN6014023301; Ｄ．Ｗ．　ＭＵＲＰＨＹ: '"Ｉｎｓｅｒｔｉｏｎ　Ｒｅａｃｔｉｏｎｓ　ｉｎ　Ｅｌｅｃｔｒｏｄｅ　Ｍａｔｅｒｉａｌｓ"' Ｓｏｌｉｄ　Ｓｔａｔｅ　ＩｏｎｉｃｓＶｏｌ．１８　＆　１９, 1986, ｐ．８４７-８５１
JPN6014023304; Ｔ．　ＹＡＭＡＭＯＴＯ　ｅｔ　ａｌ．: '"Ｌｉｔｈｉｕｍ　Ｓｅｃｏｎｄａｒｙ　Ｂａｔｔｅｒｙ　Ｕｓｉｎｇ　Ｍｏｎｏｃｌｉｎｉｃ　ＮｂＳ３　Ｐｒｅｐａｒｅｄ　ｕｎｄｅｒ　Ｈｉｇｈ　Ｐｒｅｓｓｕｒｅ"' Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｅｌｅｃｔｒｏｃｈｅｍｉｃａｌ　ＳｏｃｉｅｔｙＶｏｌ．１３３，　Ｎｏ．８, 198608, ｐ．１５５８-１５６１
JPN6014023306; Ｓ．　ＳＩＮＨＡ　ｅｔ　ａｌ．: '"Ｌｉｔｈｉｕｍ　Ｉｎｔｅｒｃａｌａｔｉｏｎ　ｉｎ　Ｃｕｂｉｃ　ＴｉＳ２"' Ｓｏｌｉｄ　Ｓｔａｔｅ　ＩｏｎｉｃｓＶｏｌ．２０, 1986, ｐ．８１-８４
JPN6014023309; Ｗ．　ＫＵＣＨＬＥＲ　ｅｔ　ａｌ．: '"７Ｌｉ　ＮＭＲ　ｒｅｌａｘａｔｉｏｎ　ｂｙ　ｄｉｆｆｕｓｉｏｎ　ｉｎ　ｈｅｘａｇｏｎａｌ　ａｎｄ　ｃｕｂｉｃ　ＬｉｘＴｉＳ２"' Ｓｏｌｉｄ　Ｓｔａｔｅ　ＩｏｎｉｃｓＶｏｌ．７０／７１, 1994, ｐ．４３４-４３８

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