레이저 어블레이션 공정에 의한 Ni-MWCNT 합성 및 물분해 특성 = Synthesis of Ni-MWCNT by pulsed laser ablation and its water splitting properties

다국어 초록 (Multilingual Abstract)

Recently, research on the development of low-cost/high-efficiency water electrolysis catalysts to replace noble metal catalysts is being actively conducted. Since overvoltage reduces the overall efficiency of the water splitting device, lowering the overvoltage of the oxygen evolution reaction (OER) is the most important task in order to generate hydrogen more efficiently. Currently, noble metal catalysts show excellent characteristics in OER performance, but they are experiencing great difficulties in commercialization due to their high price and efficiency limitations due to low reactivity. In this study, a water electrolysis catalyst Ni-MWCNT was prepared by successfully doping Ni into the MWCNTs structure through the pulsed laser ablation in liquid (PLAL) process. High resolution-transmission electron microscopy (HR-TEM) and X-ray photoelectron spectroscopy (XPS) were performed for the structure and chemical composition of the synthesized Ni-MWCNT. Catalytic oxygen evolution reaction evaluation was performed by linear sweep voltammetry (LSV) overvoltage characteristics, Tafel slope, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and Chronoamperometry (CA) was used for measurement.

참고문헌 (Reference)

1 S.H. Kang, "Ultrafast method for selectie design of graphene quantum dots with highly efficient blue emission" 6 : 38423-, 2016

2 G.-Q. Han, "Three dimensional nickel oxides/nickel structure by in situ electro-oxidation of nickel foam as robust electrocatalyst for oxygen evolution reaction" 359 : 172-, 2015

3 S.A. Shah, "Thermal synthesis of FeNi@nitrogen-doped graphene dispersed on nitrogendoped carbon matrix as an excellent electrocatalyst for oxygen evolution reaction" 2 : 4075-, 2019

4 J.O'M, Bockris, "The origin of ideas on a hydrogen economy and its solution to the decay of the environment" 27 : 731-, 2002

5 Y. Shi, "Recent advances in transition metal phosphide nanomaterials: synthesis and applications in hydrogen evolution reaction" 45 : 1529-, 2016

6 M. Zeng, "Recent advances in heterogeneous electrocatalysts for the hydrogen evolution reaction" 3 : 14942-, 2015

7 N.-I. Kim, "Oxygen-deficient triple perovskites as highly active and durable bifunctional electrocatalysts for oxygen electrode reactions" 4 : eaap9360-, 2018

8 B. You, "Innovative strategies for electrocatalytic water splitting" 51 : 1571-, 2018

9 S. Dunn, "Hydrogen futures: toward a sustainable energy system" 27 : 235-, 2002

10 H. Ahmad, "Hydrogen from photo-catalytic water splitting process: A review" 43 : 599-, 2015

11 이정일 ; 고대현 ; 민성욱 ; 류정호, "Heat-treatment effects on oxygen evolution reaction of nickel-cobalt layered double hydroxide" 한국결정성장학회 31 (31): 143-148, 2021

12 T. Zhang, "Engineering oxygen vacancy on NiO nanorod arrays for alkaline hydrogen evolution" 43 : 103-, 2018

13 이정일 ; 오성균 ; 김윤정 ; 박성주 ; 신경선 ; 김지현 ; 류정호, "Electrocatalytic properties of Te incorporated Ni(OH)2 microcrystals grown on Ni foam" 한국결정성장학회 31 (31): 96-101, 2021

14 N.T. Suen, "Electrocatalysis for the oxygen evolution reaction: Recent development and future perspectives" 46 : 337-, 2017

15 R. Kant, "Design and fabrication of sandwich-structured α-Fe2O3/Au/ZnO photoanode for photoelectrochemical water splitting" 178 : 38-, 2018

16 H. Han, "Boosting oxygen evolution reaction of transition metal layered double hydroxide by metalloid incorporation" 75 : 104945-, 2020