公开(公告)号：US20230111894A1

公开(公告)日：2023-04-13

申请号：US17736237

申请日：2022-05-04

Applicant: UNIVERSITY-INDUSTRY COOPERATION OF KYUNG HEE UNIVERSITY ,  AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION ,  Dong-eui University Industry-Academic Cooperation Foundation ,  Kangwoon University Industry-Academic Collaboration Foundation

Inventor： Jongwook PARK ,  Sang Wook KIM ,  Jong-Min OH ,  Sung Hoon KIM ,  Seokwoo KANG

IPC: C09K11/66 ,  C09K11/02 ,  H01L51/50

Abstract: Provided are a backlight unit, a down-conversion medium including the same, and a display device including the down-conversion medium. The backlight unit includes a light source configured to generate blue light; and an optical film configured to absorb a portion of the blue light generated from the light source to generate red light and green light, wherein the optical film includes a quantum dot matrix in which semi-metal element oxide is embedded.

公开(公告)号：US20160218353A1

公开(公告)日：2016-07-28

申请号：US14917198

申请日：2014-07-31

Applicant: AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Chang Koo KIM ,  Sang Wook KIM ,  Gyoung Hwa JEONG ,  Hae Min LEE

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/1393 ,  H01G11/86 ,  H01M4/52 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01G11/42 ,  H01M4/133 ,  H01M4/04

CPC classification number: H01M4/364 ,  C01B32/184 ,  H01G11/36 ,  H01G11/38 ,  H01G11/42 ,  H01G11/86 ,  H01M4/0404 ,  H01M4/0409 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/24 ,  H01M4/362 ,  H01M4/52 ,  H01M4/523 ,  H01M4/58 ,  H01M4/587 ,  H01M4/623 ,  H01M4/661 ,  Y02E60/13

Abstract: Disclosed is a method of preparing a metal oxide-graphene nanocomposite, including preparing a nanocomposite material, forming graphene flakes by pretreating the nanocomposite material, and hydrothermally synthesizing the pretreated nanocomposite material. A method of manufacturing an electrode using the metal oxide-graphene nanocomposite is also provided. According to this invention, the metal oxide-graphene nanocomposite is synthesized from inexpensive graphite through one-step processing using only a surfactant, in place of conventional methods using oxidants, reductants and high-temperature heat, thereby lowering the number of processing steps and processing costs. Also, in the fabrication of the electrode, low electrical resistance characteristic of graphene is applied as it is, in place of the conventional use of active material, conductive material and binder, thereby exhibiting desired processing efficiency without the addition of the conductive material. Furthermore, highly pure graphene is prepared in a short time and various metal oxide active materials suitable for use in energy storage devices, for example, unary, binary, and multicomponent metal oxides, is formed through one-step processing, and necessary oxides having desired weight ratios {cobalt oxide (CoO), tricobalt tetraoxide (Co3O4), and cobalt hydroxide [Co(OH)2]} can be easily prepared, and thus very wide application ranges (secondary batteries, gas sensors, etc.) are expected.

Abstract translation: 公开了一种制备金属氧化物 - 石墨烯纳米复合材料的方法，包括制备纳米复合材料，通过预处理纳米复合材料形成石墨烯薄片，以及水热合成预处理的纳米复合材料。 还提供了使用金属氧化物 - 石墨烯纳米复合材料制造电极的方法。 根据本发明，代替使用氧化剂，还原剂和高温热的常规方法，由便宜的石墨通过仅使用表面活性剂的一步加工来合成金属氧化物 - 石墨烯纳米复合材料，从而降低加工步骤和加工的数量 费用 此外，在电极的制造中，代替常规使用活性材料，导电材料和粘合剂，直接施加石墨烯的低电阻特性，从而在不添加导电材料的情况下表现出期望的加工效率。 此外，在短时间内制备高纯度石墨烯，并且通过一步加工形成适合用于储能装置（例如一元，二元和多组分金属氧化物）的各种金属氧化物活性材料，并且需要所需的氧化物 可以容易地制备重量比（氧化钴（CoO），四氧化四钴（Co 3 O 4）和氢氧化钴[Co（OH）2]}，因此预期应用范围非常广泛（二次电池，气体传感器等）。