[특허]Battery designs with high capacity anode materials and cathode materials

Battery designs with high capacity anode materials and cathode materials 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H01M-004/131 H01B-001/24 H01M-004/134 H01M-004/525 H01M-004/38 H01M-004/485 H01M-004/505 H01M-010/052 H01M-010/0562 H01M-010/44 B82Y-030/00 H01M-002/02
출원번호	US-0777722 (2013-02-26)
등록번호	US-9780358 (2017-10-03)
발명자 / 주소	Masarapu, Charan Anguchamy, Yogesh Kumar Han, Yongbong Deng, Haixia Kumar, Sujeet Lopez, Herman A.
출원인 / 주소	Zenlabs Energy, Inc.
대리인 / 주소	Christensen, Fonder, Dardi & Herbert PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 105

초록 ▼

Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

대표청구항 ▼

1. A lithium ion battery comprising: an electrode stack comprising:3-50 positive electrode elements each comprising a current collector and a positive electrode structure on a surface of the current collector with at least one electrode element having an electrode structure on both sides of the current collector;3-50 negative electrode elements each comprising a current collector and a positive electrode structure on a surface of the current collector with at least one electrode element having an electrode structure on both sides of the current collector;and a separator material separating an adjacent positive electrode element and negative electrode element;an enclosure that encloses the electrode stack; andelectrolyte comprising lithium ions,wherein each positive electrode has an active material comprising a lithium rich metal oxide, an area along one side from about 100 cm2 to about 400 cm2 and a loading from about 13 mg/cm2 to about 35 mg/cm2 on one side of the respective current collector and wherein each negative electrode comprises from about 75 wt % to about 96 wt % of a silicon based active material, from about 1 wt % to about 15 wt % carbon nanotubes, carbon nanofibers, nanostructured carbon, graphene or combinations thereof as a distinct conductive additive and a polymer binder supporting the silicon based active material and conductive additive, having a loading from about 3 mg/cm2 to about 6 mg/cm2 on one side of the respective current collector and a density in the negative electrode from 0.825 g/cc to about 1.2 g/cc, and wherein the battery exhibits a discharge capacity at the 100th cycle that is at least about 90% of the 6th cycle capacity when discharged at a rate of C/3 from 4.5V to 1.5V, the battery having an energy density from about 290 Wh/kg to about 550 Wh/kg discharged at a rate of C/10 from 4.6V to 1.5V. 2. The lithium ion battery of claim 1 wherein during an initial activation charge the battery has a negative electrode charge capacity of about 115% to about 165% at a rate of C/20 from an open circuit voltage to 1.5V against lithium relative to the sum of the first activation cycle positive electrode charge capacity at a rate of C/20 from an open circuit voltage to 4.6V against lithium plus the oxidation capacity of any supplemental lithium. 3. The lithium ion battery of claim 1 wherein the electrode stack has 5-35 positive electrode elements and 5-35 negative electrode elements and wherein the battery has an energy density from about 300 Wh/kg to about 500 Wh/kg. 4. The lithium ion battery of claim 1 wherein the battery has a volumetric energy density from about 500 Wh/l to about 900 Wh/l. 5. The lithium ion battery of claim 1 wherein the battery is a pouch cell comprising a foil enclosure with a roughly prismatic shape and a ceramic separator. 6. The lithium ion battery of claim 1 wherein the lithium rich positive electrode active material is approximately represented by the formula Li1+bNiαMnβCoγAδO2−zFz, where b ranges from about 0.01 to about 0.3, α ranges from about 0 to about 0.4, β range from about 0.2 to about 0.65, γ ranges from 0 to about 0.46, δ ranges from 0 to about 0.15 and z ranges from 0 to about 0.2 with the proviso that both α and γ are not zero, and where A is Mg, Sr, Ba, Cd, Zn, Al, Ga, B, Zr, Ti, Ca, Ce, Y, Nb, Cr, Fe, V, Li or combinations thereof. 7. The lithium ion battery of claim 1 wherein the silicon based active material comprises nanostructured elemental silicon, silicon alloy and/or silicon oxide. 8. The lithium ion battery of claim 1 further comprising supplemental lithium in an amount with an oxidation capacity corresponding to about 5% to about 150% of the irreversible capacity loss of the negative electrode. 9. The lithium ion battery of claim 1 wherein the positive electrode active material has a specific discharge capacity of at least about 200 mAh/g at C/3 discharged from 4.6V to 2V against lithium and the negative electrode active material has a specific discharge capacity of at least about 850 mAh/g at C/3 discharged against lithium. 10. The lithium ion battery of claim 1 wherein the positive electrode has a surface area along one side from about 100 cm2 to about 300 cm2. 11. The lithium ion battery of claim 1 wherein the positive electrode has an active material density from about 2.5 g/cc to about 3.3 g/cc. 12. The lithium ion battery of claim 1 wherein initial negative electrode charge capacity at a rate of C/20 from an open circuit voltage to 1.5V against lithium is about 110% to about 165% relative to the sum of the initial positive electrode charge capacity at a rate of C/20 from an open circuit voltage to 4.6V plus the oxidation capacity of any supplemental lithium. 13. The lithium ion battery of claim 1 wherein the negative electrode further comprises graphite distinct additive from the silicon based active material.

이 특허에 인용된 특허 (105)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Battery designs with high capacity anode materials and cathode materials 원문보기

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Battery designs with high capacity anode materials and cathode materials 원문보기

초록 ▼

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연구과제 타임라인

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