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Scientific and technological achievements transformation announcement [2021] No. 40 -- preparation method of high performance lithium ion battery and key materials

Release time: 2021-10-29 Editor: lj Source: Number of visits:

According to the regulations of the management measures for the transformation of scientific and technological achievements of Huazhong University of science and technology, the matters related to the achievement transformation of "high performance lithium ion battery and preparation method of key materials" are publicized as follows:

1、 Title and introduction of achievements

The achievements include the following four intellectual property rights:

1. Invention patent: a preparation method and product of sulfur nitrogen Co doped porous graphene with ultra-high specific surface area

Inventors: Huang Yunhui, Zhang Jian, Hu Pei

Application No.: zl201610268582.0

Applicant: Huazhong University of science and technology

Introduction: the invention discloses a preparation method and product of ultra-high specific surface area sulfur and nitrogen Co doped porous graphene. The method includes: selecting biomass material containing keratin as raw material, taking it as solid carbon, nitrogen and sulfur raw material at the same time, first carbonizing, then adsorbing by alkaline solution under reduced pressure, and then being activated at high temperature, Then the graphene was obtained by acid washing and vacuum drying. With the special chain and ring structure of keratin, biomass keratin was directly transformed into sulfur nitrogen Co doped porous graphene with ultra-high specific surface area. The nitrogen content of graphene can be as high as 5.0 at.% 0 at.% The specific surface area is more than 1500 m2 / g, and the structure is porous foam. The raw materials used in the invention have wide sources and low price. The preparation of graphene not only improves its application value, but also effectively solves the environmental problems caused by the waste disposal, and has the advantages of simple preparation, high efficiency and low cost.

2. Invention patent: a solid electrolyte membrane, its preparation method and application

Inventors: Shen Yue, Zhang Wang, Huang Yunhui

Application No.: zl201410209828.5

Applicant: Huazhong University of science and technology

Brief introduction: the invention discloses a solid electrolyte membrane supported by porous ceramics and a resistance test method thereof. The diaphragm is composed of two parts: a porous ceramic substrate and a dense solid electrolyte film bonded on the surface of the ceramic substrate. The porous ceramic substrate is thick, generally greater than 50 μ m, has certain mechanical strength, and has porous structure with two sides transparent, which can penetrate liquid electrolyte; The thickness of the dense solid electrolyte film is less than 10 μ m, which has good specific ion conductivity and can prevent the liquid electrolyte from passing through. The diaphragm of the invention combines strong mechanical strength of porous ceramics and dense solid electrolyte film, good ionic conductivity and ion passing selectivity.

3. Invention patent: a new method for enhancing battery pole piece and corresponding electrode piece

Inventors: Zhang Wuxing, Chen Weilun, Huang Yunhui, Xue Lihong

Application No.: zl201910510448.0

Applicant: Huazhong University of science and technology

Brief introduction: the purpose of the invention is to provide a new method for strengthening the electrode piece of a battery and its application. By introducing polyurethane binder into the alloy anode material, the cyclic performance of the alloy anode in lithium / sodium ion battery can be effectively improved. According to the invention, the electrode sheet of lithium / sodium ion battery can be made by using the conventional water-based binder, and then the polyurethane solution can be infiltrated into the gap of the electrode sheet as a composite binder to enhance the mechanical properties of the electrode sheet.

4. Invention patent: a switching device and method for lithium ion battery

Inventors: Wang HuangYin, Geng Xiaohu, Wang Xinran, Li Aobo, Shen Yue, Huang Yunhui

Application No.: ZL 201910286904.8

Applicant: Huazhong University of science and technology

Brief introduction: the invention discloses a switching device and a switching method of lithium-ion battery, which belongs to the technical field of battery pack circuit optimization. The device comprises a lithium battery detection circuit, a multi field effect transistor, a first transformer, a second transformer, a first diode, a second diode, a first square wave generating circuit, a second square wave generating circuit, a first capacitance and a second capacitance; Based on the device, the invention also realizes a switching method of lithium-ion battery. The device and method of the invention detects that when the lithium battery state is normal, the battery is connected to the battery pack, and when the lithium battery is abnormal, the battery is switched out of the battery pack; The switching device can be directly controlled by a microcontroller or hardware mode, and can act in time when a single cell in the battery pack fails, so as to ensure the safety of the battery pack and improve the user experience.

2、 Proposed transaction price

Agreement transfer: 300000 yuan

3、 Price formation process

Wuhan zhongkangzheng Assets Appraisal Co., Ltd. was entrusted by the school to carry out the assets appraisal of the project, with the appraisal value of 297400 yuan. With the consent of all inventors and negotiation with Nanjing TONGNING New Material Research Institute Co., Ltd., both parties agree that the achievement will be transferred at an agreement price of 300000 yuan. It is hereby announced that the publicity period is 15 days, from October 29, 2021 to November 12, 2021. If you have any objection, please report it to our hospital in written form within the period of publicity.

Contact person: Mr. Cao

Tel: 87558732

Institute of science and technology development

October 29, 2021

 

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