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금주의 우수논문

SCI-E Article
Designing and Tuning the Electronic Structure of Nickel-Vanadium Layered Double Hydroxides for Highly Efficient Oxygen Evolution Electrocatalysis br
이상욱
  1. 성명
    이상욱
  2. 소속
    과학기술융합대학 화학분자공학과
  3. 캠퍼스
  4. 우수선정주
    2022년 05월 2째주
Author
Lee, Chi Ho (Dept Appl Chem); 이상욱 (Dept Appl Chem) corresponding author;
Corresponding Author Info
Inamdar, AI; Im, H; Kim, H(해당 저자), Dongguk Univ, Div Phys & Semicond Sci, Seoul 04620, South Korea.; Lee, SU(해당 저자), Hanyang Univ ERICA, Ctr Bionano Intelligence Educ & Res, Dept Appl Chem, Ansan 15588, South Korea.
E-mail
이메일sulee@hanyang.ac.kr
Document Type
Article
Source
ACS CATALYSIS Volume:12 Issue:7 Pages:3821-3831 Published:2022
Times Cited
1
External Information
http://dx.doi.org/10.1021/acscatal.1c05813
Abstract
Despite the considerable efforts in advancing nonpre-cious-metal candidates as oxygen evolution reaction (OER) electro-catalysts, cost-effective production of efficient and stable catalysts viasimple synthesis routes remains to be realized. We report on theexperimental and density functional theory (DFT) guidelines of nickel(Ni)-vanadium (V) layered double hydroxides (LDHs) to prepare anoptimal electrocatalyst by changing its composition ratio. Theoptimized Ni0.75V0.25LDH exhibits the ultralow overpotentials of 200and 292 mV at the current densities of 10 and 400 mA cm-2,respectively, a long-term durability of more than 100 h at 10 mA cm-2,and an extremely low Tafel slope of 48.3 mV dec-1. Thesefindings canprovide guidance for the facile optimal design of state-of-the-art wateroxidation catalysts by using LDHs for large-scale practical applications. The enhanced catalytic performance can be attributed to alower hydrogen desorption energy and the presence of many open O sites, which can promote the initiation of the OER reaction.
Web of Science Categories
Chemistry, Physical
Funding
Basic Science Research Program of the National Research Foundation of Korea [2021R1A4A5031805, 2021R1A2B5B01001796, 2018R1D1A1A09083859, 2021R1A2B5B01002879]; Creative Materials Discovery Program on Creative Multilevel Research Center [2018M3D1A1057844]
Language
English
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