公开(公告)号：US12168828B2

公开(公告)日：2024-12-17

申请号：US17854075

申请日：2022-06-30

Applicant: S-Oil Corporation ,  POSTECH Research and Business Development Foundation

Inventor： Sangcheol Paik ,  Kijung Yong ,  Hyogyun Roh

IPC: C25B11/075 ,  C23C18/12 ,  C25B1/04 ,  C25B11/061

Abstract: The present disclosure relates to a transition metal-doped nickel phosphide nanostructure, a method for preparing the same, and a catalyst for electrochemical water decomposition including the transition metal-doped nickel phosphide nanostructure. More specifically, a transition metal-doped nickel phosphide nanostructure can be prepared by converting a zinc oxide nanostructure grown on a substrate vertically by hydrothermal synthesis to a transition metal-doped nickel oxide nanostructure by cation exchange and then phosphorizing the nickel oxide. The transition metal-doped nickel phosphide nanostructure of the present disclosure is advantageous in that it has superior catalytic activity and conductivity due to large surface area. In addition, when used as a catalyst for water decomposition under an alkaline condition, it has a low overvoltage and can have excellent catalytic activity for hydrogen evolution reaction or oxygen evolution reaction.

公开(公告)号：US12107516B2

公开(公告)日：2024-10-01

申请号：US18067893

申请日：2022-12-19

Applicant: POSTECH Research and Business Development Foundation

Inventor： Kijung Yong ,  Soyeon Yun

IPC: H02N1/04 ,  F16N99/00

CPC classification number: H02N1/04 ,  F16N99/00 ,  F16N2210/20 ,  F16N2270/00

Abstract: Proposed are triboelectric generator using a lubricant-infused surface controlled by a magnetic field and a manufacturing method thereof. The triboelectric generator 10 includes a substrate 100, an electrode unit 200 positioned on the substrate 100 and including a first electrode 210 and a second electrode 220, a stabilization layer 300 positioned on the substrate 100 and the electrode unit 200 and including a first elastic polymer 310, and a magneto-controllable unit 400 positioned on the stabilization layer 300 and including a lubricant 420 and a plurality of protrusion-shaped microcomposites 410, in which the microcomposite includes a magnetic material 411 and a second elastic polymer 412. The protrusion-shaped microcomposite is partially immersed in the lubricant, improves power generation efficiency, and can perform reversible switching according to the direction of the magnetic field.

公开(公告)号：US20250066936A1

公开(公告)日：2025-02-27

申请号：US18939715

申请日：2024-11-07

Applicant: S-Oil Corporation ,  POSTECH Research and Business Development Foundation

Inventor： Sangcheol PAIK ,  Kijung Yong ,  Hyogyun Roh

IPC: C25B11/075 ,  C23C18/12 ,  C25B1/04 ,  C25B11/061

Abstract: The present disclosure relates to a transition metal-doped nickel phosphide nanostructure, a method for preparing the same, and a catalyst for electrochemical water decomposition including the transition metal-doped nickel phosphide nanostructure. More specifically, a transition metal-doped nickel phosphide nanostructure can be prepared by converting a zinc oxide nanostructure grown on a substrate vertically by hydrothermal synthesis to a transition metal-doped nickel oxide nanostructure by cation exchange and then phosphorizing the nickel oxide. The transition metal-doped nickel phosphide nanostructure of the present disclosure is advantageous in that it has superior catalytic activity and conductivity due to large surface area. In addition, when used as a catalyst for water decomposition under an alkaline condition, it has a low overvoltage and can have excellent catalytic activity for hydrogen evolution reaction or oxygen evolution reaction.