Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Technology Limited

Yanjie Zhao

Haizu Jin

Xing Li

Jianghui Lin

Mengqin Zhang

A polymer-modified porous material, a membrane electrode, and applications thereof are disclosed. The polymer-modified porous material includes a porous material and a plurality of surface groups attached to the porous material; each of the surface groups includes a linking group and an adhesive group that are attached in sequence; the linking group has a structure represented by a structural unit I, whereinrepresents that O is linked to the porous material; the number of the structural units I in each of the surface groups is independent from each other; the total number n of moles of the structural units I in the polymer-modified porous material is 1,000-10,000; and the total number m of moles of the adhesive groups is 10-1,000, and n/m=10-1,000. The problem of serious self-discharge of existing membrane electrodes is alleviated.

Polymer-modified porous material, membrane electrode, secondary battery, and electric device

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R, R, and Reach independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; Rrepresents —COOM; Rrepresents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

Binder compound and method for preparing same

A binder compound, a conductive binder, and a secondary battery containing the same are provided. In some embodiments, the binder compound of the present disclosure has a structure of formula (I), where Rand Reach independently represent a straight or branched Calkyl; Rrepresents a halogen or cyano group; Rrepresents a hydroxymethyl or amino; Z represents a straight or branched Calkylene; and m represents an integer selected from 7600-47000. The binder compound and the conductive binder of the present disclosure can improve the storage and cycle performances of the secondary battery.

Binder compound, conductive binder, and secondary battery containing same

Graphite and a preparation method thereof, a secondary battery containing the modified graphite, a battery module, a battery pack, and an electrical device are provided. In particular, the modified graphite according to this disclosure includes a graphite moiety and a binder moiety covalently linked to the graphite moiety. The binder moiety possesses a structure expressed as Formula (IV&#xb4;). The modified graphite according to this disclosure solves the problem that the binder floats up during the preparation of the negative electrode plate of the secondary battery.

Modified graphite and preparation method thereof, secondary battery, battery module, battery pack, and electrical device

A binder includes a copolymer including a building block (I) and a building block (II) The building block (I) is formed by copolymerizing a building block (i) and a building block (ii) 

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Ningde, China

Yanjie Zhao