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Synthesis and Characterization of N-doped Carbon Shell Coated Iron Phosphide Nanocatalyst for Hydrogen Evolution Reaction : 수소발생반응을 위한 질소가 도핑된 탄소 막에 싸인 인화철 나노 촉매의 합성과 분석

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Authors

김태현

Advisor
현택환
Major
공과대학 화학생물공학부
Issue Date
2018-02
Publisher
서울대학교 대학원
Keywords
NanoparticlesHydrogen evolution reactionNon-Pt electrocatalystDurabilityCarbon shell coatingOxidation resistanceLarge scale synthesis
Description
학위논문 (석사)-- 서울대학교 대학원 : 공과대학 화학생물공학부, 2018. 2. 현택환.
Abstract
Abstract
Synthesis and Characterization of
N-doped Carbon Shell Coated
Iron Phosphide Nanocatalyst for
Hydrogen Evolution Reaction
Taehyun Kim
School of Chemical and Biological Engineering
The Graduate School
Seoul National University
For the mass production of hydrogen, development of a highly durable,
active, and affordable non-Pt electrocatalyst is essential to replace Ptbased
electrocatalyst. Herein, we introduce a simple and effective
synthesis of highly durable and active non-Pt electrocatalyst for
hydrogen evolution reaction. Using iron oxide nanoparticles as a
precursor, we synthesized carbon shell coated iron phosphide
nanoparticles. By a single heat treatment of polydopamine coated ironoxide nanoparticles, carbonization of polydopamine coating and
phosphidation of iron oxide nanoparticles to FeP nanoparticles are
achieved simultaneously.
In terms of their electrochemical performance, our nanoparticle
catalysts show overpotential of 71 mV at 10 mA/cm2, which is
compatible to that of commercial Pt catalyst, and remarkable durability
under acidic conditions for 10,000 cycles without noticeable activity loss.
The origin of long-term durability of carbon shell coated FeP
nanoparticles was investigated experimentally. Extended X-ray
adsorption fine structure analysis and electron energy loss spectroscopy
line scan analysis reveal that the origin of long-term durability of our
nanoparticles is resistance to surface oxidation, owing to the protective
effect of carbon shell coating. Moreover, large-scale synthesis was
conducted simply by scaling up the size of the reactor, which is an
essential feature for mass production of hydrogen.
Keywords: Nanoparticles, Hydrogen evolution reaction, Non-Pt
electrocatalyst, Durability, Carbon shell coating, Oxidation resistance,
Large scale synthesis
Student Number: 2016-20993
Language
English
URI
https://hdl.handle.net/10371/141627
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