# US 2010/0167128 A1 · Tin/Lithium Oxide Composite Thin Film, Its Preparation and Uses Thereof

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- Number: US 2010/0167128 A1
- Document ID: US20100167128A1
- Status: Published application
- Kind: A1
- Application number: 12/470,665
- Filed: 2009-05-22
- Published: 2010-07-01
- Earliest claimed: 2008-12-29
- Assignees: Taiwan Textile Research Institute
- Inventors: Wen-Hsien HO; Shiow-Kang YEN; Ching-Fei LI
- Web page: https://patentgrep.com/patent/US20100167128A1

## CPC

- H01M 4/1391: of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
- C01G 19/00: Compounds of tin
- H01M 4/0438: {by electrochemical processing (electroless electrochemical plating C23C18/54)}
- H01M 4/0452: {from solutions}
- H01M 4/66: Selection of materials
- C01P 2002/72: by d-values or two theta-values, e.g. as X-ray diagram
- C01P 2002/85: by XPS, EDX or EDAX data
- C01P 2004/03: obtained by SEM
- C01P 2006/40: Electric properties
- H01M 4/485: of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence)
- H01M 10/052: Li-accumulators
- H01M 2004/028: {Positive electrodes}
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A method for electrochemically producing a tin/lithium oxide composite thin film includes forming the tin/lithium oxide composite thin film on a conductive substrate in a solution under suitable conditions. The solution includes about 10−3 M to about 10−2 M lithium nitrate and about 10−4 M to about 10−3 M stannic chloride or stannous chloride.

## Claims

### Claim 1

An electrochemical method for manufacturing a tin/lithium oxide composite thin film, comprising:
providing a solution comprising about 10−3 M to about 10−2 M lithium nitrate and about 10−4 M to about 10−3 M stannic chloride or stannous chloride;
electrodepositing the tin/lithium oxide composite thin film on a conductive substrate under a condition where a reference electrode of Ag/AgCl and a voltage of about 900-1500 mV are used; and
drying the tin/lithium oxide composite thin film at a temperature of about 15-40° C. and a relative humidity of at least about 75%.

### Claim 2 (depends on 1)

The method of claim 1, wherein the electrodeposition is performed by potentiostatic deposition.

### Claim 3 (depends on 1)

The method of claim 1, wherein the electrodeposition is performed by pulse potential deposition with a pulse potential of about 900-1100 mV.

### Claim 4 (depends on 1)

The method of claim 1, wherein the electrodeposition is performed for a period of about 10-100 minutes.

### Claim 5 (depends on 1)

The method of claim 1, wherein the drying is carried out at a temperature of about 40° C.

### Claim 6 (depends on 1)

The method of claim 1, wherein the relative humidity is about 85%.

### Claim 7 (depends on 1)

The method of claim 1, wherein the condition further comprises a working temperature of about 23-27° C.

### Claim 8 (depends on 1)

The method of claim 1, wherein the conductive substrate is a conductive fabric, a transparent conductive substrate, a flexible substrate, a metal substrate, or a metal oxide substrate.

### Claim 9 (depends on 8)

The method of claim 8, wherein the transparent conductive substrate is a FTO/glass substrate, an ITO/glass substrate, or an ITO/PEN substrate.

### Claim 10 (depends on 8)

The method of claim 8, wherein the flexible substrate is a polyethylene terephthalate substrate or a polycarbonate substrate.

### Claim 11 (depends on 8)

The method of claim 8, wherein the metal substrate is a platinum substrate or a stainless steel substrate.

### Claim 12 (depends on 1)

The method of claim 1, further comprising heat-treating the tin/lithium oxide composite thin film at about 100-200° C.

### Claim 13 (depends on 12)

The method of claim 12, wherein the heat-treating step comprises a first heating stage, a second heating stage and a cooling stage, wherein
the tin/lithium oxide composite thin film is heated from about 23-27° C. to about 70-100° C. at a first heating rate of about 2° C. per minute for about 30-180 minutes during the first heating stage;
the tin/lithium oxide composite thin film is further heated to about 100-200° C. at a second heating rate of about 2° C. per minute for about 30-180 minutes during the second heating stage; and
the tin/lithium oxide composite thin film is cooled to about 23-27° C. at a cooling rate of about 2° C. per minute during the cooling stage.

### Claim 14

A tin/lithium oxide composite thin film, comprising a plurality of tin/lithium oxide composite particles, wherein each of the tin/lithium oxide composite particles comprises a plurality of tin crystal grains and a lithium oxide thin layer enveloping the tin crystal grains.

### Claim 15

A cathode component of a lithium ion secondary battery, comprising:
a conductive substrate; and
a tin/lithium oxide composite thin film disposed on the conductive substrate, wherein the tin/lithium oxide composite thin film comprises a plurality of tin/lithium oxide composite particles, and each of the tin/lithium oxide composite particles comprises a plurality of tin crystal grains and a lithium oxide thin layer enveloping the tin crystal grains.

### Claim 16 (depends on 15)

The cathode component of a lithium ion secondary battery of claim 15, wherein the cathode component has a capacity retention capability of higher than 60% after 50 charge-discharge cycles.