National Institute for Materials Science

Gotion, Inc.

Qian Cheng

Jie Tang

Luchang Qin

Norio Shinya

Steven Cai

Feifei Zhang

This disclosure relates to semi-solid electrodes which are pre-formed prior to inclusion in lithium ion batteries, lithium ion batteries which incorporate the semi-solid electrodes and methods of making the semi-solid electrodes. An electrochemical cell includes a semi-solid anode formed of anode active material injected with an electrolyte and a first electrolyte additive, the semi-solid anode having a first SEI layer; and a semi-solid cathode formed of a cathode active material injected with an additional electrolyte and a second electrolyte additive, the semi-solid cathode having a second SEI layer, wherein the first electrolyte additive and the second solid electrolyte additive are different.

Pre-cell formation electrodes and lithium ion batteries

The problem addressed by the present invention is to provide an apparatus for preparing ultrathin graphene pieces capable of preparing ultrathin graphene pieces in which less than 10 pieces of graphene are overlapped in large quantities, a method for preparing ultrathin graphene pieces capable of preparing the ultrathin graphene pieces with high yield, an ultrathin graphene piece in which less than 10 pieces of graphene are overlapped, a capacitor having high performance by using the ultrathin graphene piece as an electrode, and an efficient method of manufacturing the capacitor. The above-described problem can be solved by using an apparatusfor preparing ultrathin graphene pieces, the apparatus comprising: a graphite electrode; a counter electrodewhich is made of graphite, a corrosion resistant alloy, or a precious metal; an electrolytic solutionin which one end sides of the two electrodesandare immersed; a containerwhich stores the electrolytic solution; and a power sourcewhich is connected to the two electrodesandvia wiringsand. The apparatus is also provided with a porous filterso as to cover at least the immersed part of the graphite electrodethat is immersed in the electrolytic solution

Ultrathin graphene piece, apparatus for preparing ultrathin graphene pieces, method for preparing ultrathin graphene pieces, capacitor, and method of manufacturing capacitor

The object of the present invention is to provide linked stacks of reduced graphene, in which excellent electrical property on the surface of graphene may be utilized, a method for producing the same, powder comprising the same, and film comprising the same. The object may be solved by using linked stacks of partly reduced graphenecomprising two or more stacks of partly reduced graphenetolinked together, in which the stack of partly reduced graphenehas two or more sheets of partly reduced grapheneand a nanosubstanceheld between the sheets of partly reduced graphene, the partly reduced graphenehas no carbonyl groups and has carboxyl groupsand hydroxyl groups, and different stacks of partly reduced graphenetoare linked to each other by an ester bond

Linked stacks of partly reduced graphen, method for producing linked stacks of partly reduced graphene, power comprising linked stacks of partly reduced graphene, graphene electrode film, method for producing graphene elcetrode film, and graphene capacitor

Growing community of inventors

Ibaraki, Japan

Qian Cheng