US 9,852,850 B2 · Electrode, power storage device, electronic device, and vehicle

Abstract

A power storage device with high capacity is provided. Alternatively, a power storage device with excellent cycle characteristics is provided. Alternatively, a power storage device with high charge and discharge efficiency is provided. Alternatively, a power storage device with a long lifetime is provided. A negative electrode active material is provided over a negative electrode current collector, and the negative electrode active material layer is formed in such a manner that first layers and second layers are alternately stacked. The first layer includes at least an element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second layer includes oxygen and the same element as the one included in the first layer.

Drawings

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Drawings

Claims18

Dependent claims

An electrode comprising:

a current collector;
and
an active material layer,
wherein the active material layer comprises first to fourth layers,
wherein the second layer is provided between the first layer and the third layer,
wherein the third layer is provided between the second layer and the fourth layer,
wherein the first layer is in contact with the current collector,
wherein the first layer comprises a first element which is selected from, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In,
wherein the third layer comprises a second element which is selected from, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In,
wherein the second layer comprises the first element or the second element,
wherein the second layer comprises at least one of oxygen, nitrogen, sulfur, phosphorus, and fluorine,
wherein the fourth layer comprises the first element or the second element, and
wherein the fourth layer comprises at least one of oxygen, nitrogen, sulfur, phosphorus, and fluorine.

10 more elements

Dependencies are inferred from the claim text.

Description17,601 words

Summary1,621 words

#1. Field of the Invention

#The present invention relates to an object, a method, or a manufacturing method. In addition, the present invention relates to a process, a machine, manufacture, or a composition of matter. In particular, one embodiment of the present invention relates to a semiconductor device, a display device, a light-emitting device, a power storage device, a storage device, a driving method thereof, or a manufacturing method thereof. In particular, one embodiment of the present invention relates to a power storage device and a manufacturing method thereof.

#2. Description of the Related Art

Brief description of the drawings21 figures

#In the accompanying drawings:

#FIGS. 1A and 1B illustrate a negative electrode of one embodiment of the present invention;

#FIGS. 2A to 2C each illustrate a negative electrode of one embodiment of the present invention;

Detailed description15,724 words

#Hereinafter, embodiments and examples of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the descriptions of the embodiments and examples and it is easily understood by those skilled in the art that the mode and details can be changed variously. Accordingly, the present invention should not be interpreted as being limited to the content of the embodiments and examples below.

#Note that in the drawings used in this specification, the sizes and thicknesses of components such as films, layers, substrates, and regions are exaggerated for simplicity in some cases. Therefore, the sizes of the components are not limited to the sizes in the drawings and relative sizes between the components.

#Note that the ordinal numbers such as “first” and “second” in this specification and the like are used for convenience and do not denote the order of steps, the stacking order of layers, or the like. Therefore, for example, description can be made even when “first” is replaced with “second” or “third,” as appropriate. In addition, the ordinal numbers in this specification and the like are not necessarily the same as those which specify one embodiment of the present invention.

Facts

Application

14/802,326Filed 17 Jul 2015

Priority

JP 2014-14797218 Jul 2014

Published

US 2016/0020035 A121 Jan 2016

Granted

26 Dec 2017

Term ends

7 Mar 2036

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 234 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification30 codes

H01G 11/30
Electrodes: characterised by their material
H01M 4/13
Electrodes composed of, or comprising, active material: electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators;…
H01M 4/366
Composites: as layered products
H01M 4/386
Of elements or alloys: silicon or alloys based on silicon

Timeline

18 Jul 2014Priority claimedJP 2014-147972
17 Jul 2015Application filedUS 14/802,326
17 Jul 2015Assigned to Semiconductor Energy Laboratory Co., Ltd.assignment of assignor's interest
21 Jan 2016PublishedUS 2016/0020035 A1
26 Dec 2017GrantedUS 9,852,850 B2
12 Oct 2026TodayWithin its term
7 Mar 2036Term endsEstimated, includes 234 days of adjustment

Electrode, power storage device, electronic device, and vehicle

Life of this patent

Electrode, power storage device, electronic device, and vehicle

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims18

Description17,601 words

Drawings

Classification30 codes

Life of this patent

Description17,601 words