# US 10,312,509 B2 · Electrode additive and an electrode comprising said electrode additive

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- Number: US 10,312,509 B2
- Document ID: US10312509B2
- Status: Granted
- Kind: B2
- Application number: 15/525,131
- Filed: 2014-11-10
- Published: 2018-09-27
- Granted: 2019-06-04
- Earliest claimed: 2014-11-10
- Assignees: Robert Bosch GmbH; Institute of Chemistry, Chinese Academy of Sciences
- Applicants: Robert Bosch GmbH; Institute of Chemistry, Chinese Academy of Sciences
- Inventors: Chunpeng Yang; NaHong Zhao; Yuguo Guo; Yunhua Chen; Eric Zhang; Yaxia Yin
- Web page: https://patentgrep.com/patent/US10312509B2

## CPC

- H01M 4/366: {as layered products}
- H01M 4/136: Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
- H01M 4/38: of elements or alloys
- H01M 4/625: {Carbon or graphite}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 10/054: Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- B82Y 40/00: Manufacture or treatment of nanostructures
- H01M 4/364: {as mixtures}
- H01M 4/386: {Silicon or alloys based on silicon}
- 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
- Y02E 60/10: Energy storage using batteries
- Y10S 977/744: having atoms interior to the carbon cage
- Y10S 977/846: internal modifications, e.g. filling, endohedral modifications
- Y10S 977/948: Energy storage/generating using nanostructure, e.g. fuel cell, battery
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An electrode additive comprising an electrochemically active material in a form of one-dimensional molecular chain is disclosed wherein the electrochemically active material is contained inside a nanotube-formed conductive shell material. An electrode comprising said electrode additive, and the uses of said electrode additive and said electrode are also disclosed.

## Claims

### Claim 1

An electrode comprising an electrode additive comprising an electrochemically active material in a form of a one-dimensional molecular sulfur chain and a carbon nanotube-formed conductive shell material, wherein the electrochemically active material is contained inside the carbon nanotube-formed conductive shell material, wherein the carbon nanotube has an inner diameter of 0.8-2 nm and the one dimensional molecular sulfur chain exhibits a zigzag and/or linear configuration.

### Claim 2 (depends on 1)

The electrode of claim 1, characterized in that the carbon nanotube is doped with nitrogen or boron.

### Claim 3 (depends on 1)

The electrode of claim 1, characterized in that the content of the electrochemically active material in the electrode additive is 1-50 wt. % based on the weight of the electrode additive.

### Claim 4 (depends on 1)

The electrode of claim 1, characterized in that the content of the electrode additive in the electrode is 1-70 wt. % based on the weight of the electrode.

### Claim 5 (depends on 1)

The electrode of claim 1, characterized in that in addition to the electrode additive, the electrode further comprises an electrode active material usable in an energy storage system and/or an energy conversion system.

### Claim 6 (depends on 5)

The electrode of claim 5, characterized in that the electrode active material is a sulfur-containing material is selected from the group consisting of elemental sulfur, sulfur-carbon composite, sulfurized polymer, sulfurized polyacrylonitrile, Li2S-carbon composite, and metal sulfides.

### Claim 7 (depends on 5)

The electrode of claim 5 , characterized in that the electrode active material is a silicon-containing material, a metal chalcogenide and/or lithium titanate.

### Claim 8 (depends on 1)

A battery comprising the electrode of claim 1.

### Claim 9 (depends on 1)

The electrode of claim 1, characterized in that the carbon nanotube is selected from the group consisting of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube having 3-6 walls.

### Claim 10 (depends on 1)

The electrode of claim 1, characterized in that the content of the electrochemically active material in the electrode additive is 5-20 wt. % based on the weight of the electrode additive.

### Claim 11 (depends on 1)

The electrode of claim 1, characterized in that the content of the electrode additive in the electrode is 20-40 wt. %, based on the weight of the electrode.