Chinese Academy of Sciences

Academia Sinica

Shenzhen Xin Chang Long New Materials Technology Co., Ltd.

Guangzhou Institute of Energy Conversion

Lingzhi Zhang

Hao Luo

Xinyue Zhao

Yongjin Mai

Jing Su

Chung-Chih Wu

Tien-yau Luh

Tianqiao Yong

Haoxiang Zhong

Lu Yue

Jiarong He

Daoping Tang

Suqing Wang

Chin-Fa Lee

Cheih-Wei Chen

A preparation method of a crosslinking-type aqueous binder for lithium-ion batteries. An organic carboxylic group-, amino group- or hydroxyl group-containing hydrophilic polymer, and a hydroxyl group-, amine group- or carboxyl group-containing water-soluble small-molecule crosslinker, both serve as starting materials of the aqueous binder, and can be crosslinked by esterification or amidation under coating and drying conditions of lithium-ion battery electrode slurry. The preparation method of the crosslinking-type aqueous binder is simple, without the need of modifying the current process or conditions for lithium-ion battery manufacture. The obtained electrodes have excellent binding capacity, flexibility, and elasticity.

Preparation method of crosslinking-type aqueous binder for lithium-ion batteries incorporating slurry coating and drying process

A multi-functionally modified polymer binder for lithium ion batteries, which is prepared by a free radical graft copolymerization or a Michael addition reaction, with a biomass polymer or a synthetic polymer as a substrate, and a hydrophilic monomer and a lipophilic monomer as functionally modifying monomers. The binder presents a three-dimensional network body with a multi-branch structure, provides more active cites for contacting with the electrode active materials, improves uniformity and flatness in the formation of films from electrode slurry, enhances the binding strength between the electrode active materials, the conductive agents and the current collector, has high elasticity and binding strength, and is applicable in water/organic solvent. Use of the binder in positive electrodes and negative electrodes can facilitate the conduction of electrons/ions during charging and discharging, reduce the electrochemical interface impedance of the electrodes.

Multi-functionally modified polymer binder for lithium ion batteries and use thereof in electrochemical energy storage devices

A method of preparing an anode of lithium ion batteries or an electrode plate of a supercapacitor. The method includes admixing a terpene resin-based aqueous binder. The terpene resin-based aqueous binder includes a terpene resin emulsion including between 20 and 80 wt. % of a terpene resin, and the terpene resin emulsion has a viscosity of between 2000 and 10000 mPa&#xb7;s.

Method of preparing anode of lithium ion batteries or electrode plate of supercapacitor

A method for preparation of an organohalosilane represented by formula I is disclosed. The method comprises: contacting an alcohol with metal sodium to yield a sodium alcoholate; contacting the sodium alcoholate with a halogen silane compound for an etherification reaction; and adding dropwise a fluorinating agent for a fluorination reaction. The organohalosilane is used for preparation of an electrolyte solution of a non-aqueous lithium ion battery.

Organohalosilane and use thereof in electrolytes of non-aqueous lithium ion batteries

The present invention discloses a process for preparing a functionalized choline chloride ionic liquid as defined in formula (I), and thereof use in an electrochemical energy storage device, as an electrolyte solution or an additive for a lithium ion battery and a supercapacitor. The ionic liquid electrolyte material has better biocompatibility, flame retardance, high ionic conductivity, low viscosity, and wide electrochemical window. 

Functionalized choline chloride ionic liquid, preparation method thereof and use in electrochemical energy storage device

A high-performance new silicon composite material for a negative electrode of a lithium ion battery and a preparation method thereof by utilizes a conductive polymer PEDOT and a water solution dispersant PSS as a coating layer of nano-Si powder and a carbon source. The Si/C composite material taking a Si-containing type lithium storage material as a main active substance is prepared by firstly polymerizing PEDOT: PSS on the surface of Si through in-situ polymerization reaction and then performing high-temperature carbonization treatment on a prepared Si/PEDOT: PSS composite under an inert atmosphere. The prepared composite material is doped with a small amount of S element. Nano-Si particles are uniformly embedded in a PEDOT: PSS polymer and a carbon matrix. A high yield is achieved by using cheap raw materials and a simple and environment-friendly process. The prepared Si/C composite material has very low initial irreversible capacity loss (2.8%) and excellent charge-discharge.

Nano-silicon composite lithium ion battery anode material coated with poly (3,4-ethylenedioxythiophene) as carbon source and preparation method thereof

An organohalosilane represented by formula I, where R, R, and Rindependently, at each occurrence, represent &#x2014;(CH)CHwhere x is an integer from 0 to 5, or a halogen substituent where the halogen is F or Cl, and at least one substituent from R, R, and Ris the halogen substituent; Ris a C-Calkoxyl or a tertiary amine represented by &#x2014;NRR, where Rand Rindependently, at each occurrence, represent a same or different C-Calkyl; m is an integer from 1 to 20; and n is an integer from 0 to 5. The organohalosilane is used for preparation of an electrolyte solution of a non-aqueous lithium ion battery.

The invention provides an organosilicon amine electrolyte material containing a polyether chain, which has a wide range of applications, as well as an application of the electrolyte material in a lithium ion battery. The chemical structure thereof is as shown in Formula 1, wherein R1 and R2 are selected from the same or different C1-C10 alkyls; A is a polyether chain segment having the structure of (CH2)O[(CH)O](CH2), where n and m are integers from 0 to 10, and x is an integer from 1 to 10; R3, R4 and R5 are selected from the same or the different C1-C10 alkyls or alkoxyl groups, or are equivalent to ANRRor &#x2014;O&#x2014;SiRRRin structure; wherein R, Rand Rare C1-C10 alkyls. 

Organosilicon amine electrolyte materials containing polyether chain and application thereof in electrolytes of lithium-ion batteries

A furan-containing compound of formula (I): Ar is aryl, heteroaryl, or oligoaryl; A is furyl; B is aryl or heteroaryl; Ris hydrogen, alkenyl, alkynyl, aryl, heteroaryl, cyclyl, heterocyclyl, or oligoaryl; and Ris hydrogen, alkyl, alkenyl, alkynyl, aryl, heteroaryl, cyclyl, or heterocyclyl. The compound is useful as a hole transporting material in an organic light emitting diode device.

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Guangzhou, China

Lingzhi Zhang