Korea Advanced Institute of Science and Technology

Jungjae Park

Ho Jun Lee

Jae Yeol Park

Kunmo Koo

Jong Min Yuk

Jongmin Yuk

Namgyu Noh

Sanghyeon Ji

The present disclosure relates to a sodium-ion storage material including a doped compound, and an electrode material for a sodium-ion battery, an electrode for a sodium-ion battery, and a sodium-ion battery, which include the sodium-ion storage material. Specifically, the sodium-ion storage material may include a compound consisting of an NaVM(PO)F/NaVM(PO)composite (M=Fe, Mn, Cr, Cu, Zn or Ti, 0<x,y≤2). When the sodium-ion storage material according to the present disclosure is used, it may maintain high discharge capacity while reducing the vanadium content, and when the sodium-ion storage material is applied to a sodium-ion secondary battery or a sodium-magnesium hybrid-ion battery, the battery may exhibit excellent charge/discharge cycle characteristics.

Metal-doped sodium vanadium fluorophosphate/sodium vanadium phosphate (Na3V2(PO4)2F3/Na3V2(PO4)3) composite for sodium-ion storage material

The present disclosure relates to a fluid chip for an electron microscope including a lower chip, an upper chip, and a fluid channel part for supplying a fluid sample, and may attach a transmissive thin film part of a graphene material having excellent bulging resistance to a plurality of holes formed in a fluid channel part to increase the thickness of a support not serving as a transmissive window thicker than the conventional one, thereby minimizing the loss of a spatial resolution and also suppressing the bulging phenomenon of the transmissive window while supplying the fluid sample more stably. Further, the present disclosure may form an electrode which may be connected with an external electrical supply source in the fluid channel part, thereby analyzing electrochemical or thermochemical reaction of the fluid sample in the fluid channel part in real time.

Liquid chip for electron microscope having excellent bulging resistance

Growing community of inventors

Daejeon, South Korea

Jungjae Park