Fabrication of 3D ordered porous nanocomposites as air cathodes of Li-air battery리튬-공기 전지 공기극 응용을 위한 3차원 정렬 다공성 나노복합체 제작

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Three-dimensional (3D) nanostructured materials, which show lots of unique properties compared to bulk materials, have contributed to technological innovation in many spheres such as energy storage system, catalyst, and mechanical applications. Among the nano-fabrication methods, Proximity-field nanoPatterning (PnP) allows the facile fabrication of large-area 3D ordered porous nanostructures with high reproducibility. Herein, 3D ordered porous core-shell nanocomposites composed of Ni current collector covered by Pd catalyst layer to facilitate oxygen-related reactions are fabricated and tested as Li-air battery cathodes. Li-air battery with the synthesized cathode delivers a discharge capacity of 1.63 mAh/cm2 at 0.025 mA/cm2. Also, an energy efficiency of 86.6% and stable cycle performance over 90 cycles at the current density of 0.02 mA/cm2 are shown. The low charge overpotential and high cyclability are attributed to the highly ordered 3D Ni/Pd cathodes with high electrical conductivity and catalytic activity.
Advisors
Jeon, Seokwooresearcher전석우researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2023
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2023.2,[iii, 37 p. :]

Keywords

proximity-field nanopatterning▼athree-dimensional porous nanostructure▼aenergy storage system▼alithium-air battery; 근접장 나노패터닝▼a3차원 다공성 나노구조▼a에너지 저장 시스템▼a리튬-공기 전지

URI
http://hdl.handle.net/10203/308996
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1032796&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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