国家/地区 中国（6）
IPC部 C（5） B（2）
IPC大类 C01（2）
IPC小类 C01B（2）
IPC
发明人 WANG L（6） JI L（2）
公开年 2017（4） 2018（2）
申请年 2017（6）
专利权人 WANG L（6）

Classroom automatic attendance device has student management attendance device main housing which is provided with stainless steel heat-dissipating shutters on both sides, and graphene battery pack which is provided inside host housing.

WANG L

Material used for preparation of clean hydrogen energy comprises zinc acetate dihydrate, indium nitrate, cadmium acetate dihydrate, rare earth compound, graphene oxide solution, and thioacetamide.

WANG L

Preparation of graphene-ceramic material involves adding zirconium oxide ceramic into graphene dipping liquid, preparing composite prefabricated material, and sintering obtained material.

WANG L, TIAN W, JI L

Graphene dispersion solution comprises graphene, dispersant and solvent, prepared by e.g. preparing graphene into powder, mixing graphene powder and dispersant, placing milled mixture in solvent and mixing.

JI L, WANG L, ZOU H

Preparing electrode for electro catalytic oxidation of waste water comprises taking graphene, mixing with metal or metal oxide, mixing graphene composite material with a solvent and ultrasonically dispersing and forming adhesive layer.

WANG L

Surface-coating composition for coating lead-grids of lead-acid batteries used in automotive applications, comprises resin(s), and carbon material chosen from graphene and graphene nanoplatelets.

FUKUSHIMA H, RITCH T, WANG L