루테늄 산화물 나노 섬유 지지체에 담지된 고 분산성 촉매의 전기화학적 거동

안건형,안효진,An, Geon-Hyoung,Ahn, Hyo-Jin 한국분말야금학회 2017 한국분말재료학회지 (KPMI) Vol.24 No.2

Well-dispersed platinum catalysts on ruthenium oxide nanofiber supports are fabricated using electrospinning, post-calcination, and reduction methods. To obtain the well-dispersed platinum catalysts, the surface of the nanofiber supports is modified using post-calcination. The structures, morphologies, crystal structures, chemical bonding energies, and electrochemical performance of the catalysts are investigated. The optimized catalysts show well-dispersed platinum nanoparticles (1-2 nm) on the nanofiber supports as well as a uniform network structure. In particular, the well-dispersed platinum catalysts on the ruthenium oxide nanofiber supports display excellent catalytic activity for oxygen reduction reactions with a half-wave potential ($E_{1/2}$) of 0.57 V and outstanding long-term stability after 2000 cycles, resulting in a lower $E_{1/2}$ potential degradation of 19 mV. The enhanced electrochemical performance for oxygen reduction reactions results from the well-dispersed platinum catalysts and unique nanofiber supports.

이중 전기방사법을 이용하여 SnO₂-Sn-Ag₃Sn 나노 입자가 균일하게 내재된 탄소 나노섬유의 합성

안건형,안효진,An, Geon-Hyoung,Ahn, Hyo-Jin 한국재료학회 2013 한국재료학회지 Vol.23 No.2

Well-distributed $SnO_2$-Sn-$Ag_3Sn$ nanoparticles embedded in carbon nanofibers were fabricated using a co-electrospinning method, which is set up with two coaxial capillaries. Their formation mechanisms were successfully demonstrated. The structural, morphological, and chemical compositional properties were investigated by field-emission scanning electron spectroscopy (FESEM), bright-field transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). In particular, to obtain well-distributed $SnO_2$ and Sn and $Ag_3Sn$ nanoparticles in carbon nanofibers, the relative molar ratios of the Ag precursor to the Sn precursor including 7 wt% polyacrylonitrile (PAN) were controlled at 0.1, 0.2, and 0.3. The FESEM, bright-field TEM, XRD, and XPS results show that the nanoparticles consisting of $SnO_2$-Sn-$Ag_3Sn$ phases were in the range of ~4 nm-6 nm for sample A, ~5 nm-15 nm for sample B, ~9 nm-22 nm for sample C. In particular, for sample A, the nanoparticles were uniformly grown in the carbon nanofibers. Furthermore, when the amount of the Ag precursor and the Sn precursor was increased, the inorganic nanofibers consisting of the $SnO_2$-Sn-$Ag_3Sn$ nanoparticles were formed due to the decreased amount of the carbon nanofibers. Thus, well-distributed nanoparticles embedded in the carbon nanofibers were successfully synthesized at the optimum molar ratio (0.1) of the Ag precursor to the Sn precursor after calcination of $800^{\circ}C$.

미국 소비자금융보호위원회(CFPB)의 2015년 「중재연구 의회보고서」의 내용과 시사점

안건형,AHN, Keon-Hyung 한국무역상무학회 2018 貿易商務硏究 Vol.77 No.-

The United States of America is one of the most favoring countries in which mandatory pre-arbitration clauses in the form of adhesion contract have been widely recognized and supported by courts and the Federal Arbitration Act. However, after the financial crisis in 2008 and the National Arbitration Forum scandal in 2009, in enacting the Dodd-Frank Wall Street Reform and Consumer Protection Act ('Dodd-Frank Act'), Section 1028(a) of the Act requires the newly created Consumer Financial Protection Bureau (CFPB) to provide Congress with a report on "the use of agreements providing for arbitration of any future dispute between covered persons and consumers". Section 1028(b) also grants the CFPB the authority to "prohibit or impose conditions or limitations on the use of an agreement between a covered person and a consumer for a consumer financial product or service providing for arbitration of any future dispute between the parties, if the Bureau finds that such a prohibition or imposition of conditions or limitations is in the public interest and for the protection of consumers." Pursuant to the Dodd-Frank Act, the CFPB issued a report entitled "2015 Arbitration Study: Report to Congress 2015 (Report)" in March 2015. This paper examines some major legal issues of the Report and makes a few recommendations for Korean financial institutions which entered into the U.S. financial market or has a plan to do so in the near future.

$TiO_2$기반 복합 나노선을 이용한 리튬이온 배터리의 전극 특성 연구

안건형,안효진,An, Geon-Hyoung,Ahn, Hyo-Jin 한국마이크로전자및패키징학회 2011 마이크로전자 및 패키징학회지 Vol.18 No.3

우리는 전기방사법을 이용하여 $TiO_2$-Ag 복합 나노선 전극을 성공적으로 합성 하였으며 그들의 전기화학적 특성 및 구조 사이의 관계를 주사전자현미경(FESEM), 투과전자현미경(TEM), X-선 회절(XRD), X-선 광전자 분광법(XPS) 및 cycler에 의하여 규명하였다. 특히 $TiO_2$-Ag 복합 나노선 전극의 전기화학 특성은 순수한 $TiO_2$ 나노선 전극 및 나노입자(P25, Degussa)와 비교하였을 때 우수한 전기화학적 결과를 얻었다. 따라서 $TiO_2$ 나노선 전극 안에 Ag nanophases의 도입은 리튬이온 배터리를 위한 나노선 전극의 수명 및 용량을 향상 시킬 수 있다. we successfully synthesized $TiO_2$-Ag composite nanowires via an electrospinning method and investigated the relationship between their electrochemical properties and structures by means of field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and cycler. It is shown that the $TiO_2$-Ag composite nanowires exhibit superior electrochemical properties when compared to the single $TiO_2$ nanowires and $TiO_2$ nanoparticles (P25, Degussa). Therefore, the results indicate that the introduction of Ag nanophases within the electrospun $TiO_2$ nanowires could be improved the capacitance and cycleability of electrodes in Li-ion batteries.

산소환원반응 촉매용 질소 도핑된 탄소나노섬유의 제조

안건형,이은환,안효진,An, Geon-Hyoung,Lee, Eun-Hwan,Ahn, Hyo-Jin 한국분말야금학회 2016 한국분말재료학회지 (KPMI) Vol.23 No.6

N-doped carbon nanofibers as catalysts for oxygen-reduction reactions are synthesized using electrospinning and carbonization. Their morphologies, structures, chemical bonding states, and electrochemical performance are characterized. The optimized N-doped carbon nanofibers exhibit graphitization of carbon nanofibers and an increased nitrogen doping as well as a uniform network structure. In particular, the optimized N-doped carbon nanofibers show outstanding catalytic activity for oxygen-reduction reactions, such as a half-wave potential ($E_{1/2}$) of 0.43 V, kinetic limiting current density of $6.2mAcm^{-2}$, electron reduction pathways (n = 3.1), and excellent long-term stability after 2000 cycles, resulting in a lower $E_{1/2}$ potential degradation of 13 mV. The improvement in the electrochemical performance results from the synergistic effect of the graphitization of carbon nanofibers and the increased amount of nitrogen doping.

미국중재협회/국제분쟁해결센터(AAA/ICDR)의 긴급중재인 제도에 관한 연구

안건형(Keon-hyung Ahn),이동수(Michael Lee),오원석(Won-suk Oh) 한국국제상학회 2011 國際商學 Vol.26 No.2

In the past, there was no option for a party to the arbitration to apply an interim relief to the competent court before the arbitral tribunal was constituted. To solve this problem, the ICDR, among all the arbitration institutions throughout the world, had firstly introduced the emergency arbitrator procedure by adding an article 37 in its International Arbitration Rules (hereinafter referred to “ICDR Rules”) on 1 May, 2006. The purpose of this paper is to draw attention on the necessity and importance of emergency arbitrator system by examining four decisions rendered by emergency arbitrators at the ICDR related to emergency interim relief and a number of case laws ruling on the interim relief by the US courts.

2017 ICC 개정 중재규칙의 주요내용과 시사점

안건형(Keon-Hyung Ahn) 한국무역연구원 2017 무역연구 Vol.13 No.4

This paper examines the newly revised ICC Arbitration Rules which were enforced as of the 1st of March 2017. To this end, innovative changes in these rules reflecting policy development and practice with a view to increase time and cost efficiency and transparency are scrutinized and analyzed after which the newly adopted provisions for expedited procedures aimed at having the final award issued by a sole arbitrator within 6 months after the case management conference are presented. A comparative analysis on the provisions for expedited procedures among the ICC, ICDR, SIAC, and KCAB rules is then conducted where some major issues that may generate due process challenges by dissatisfied parties to the arbitration are discussed. Some implications from the possibility of due process challenges are offered and a couple of practical tips for trade or legal practitioners on what to consider in implementing the newly revised ICC Rules in the future are suggested.

OECD 다국적기업 가이드라인 한국 국내연락사무소 (NCP)의 분쟁해결 기능과 지배구조 개선방안

안건형(Keon-Hyung Ahn) 한국중재학회 2017 중재연구 Vol.27 No.4

The OECD Guidelines for Multinational Enterprises (The Guidelines) was initially promulgated in 1976 as a form of annex to the OECD Declaration on International Investment and Multinational Enterprises. The Guidelines aims at accomplishing the implementation and dissemination of the Responsible Business Conduct. The latest version of The Guidelines, as revised in 2011, directed 47 adhering countries to The Guidelines to set up their respective National Contact Points (NCPs). NCPs are The Guidelines’ dispute resolution mechanism for specific instances arising from breach by multinational enterprises of The Guidelines. Korea to date has its own NCP performing its role to offer good offices and facilitates settlement between the parties to the specific instances regarding The Guidelines. However, there has been strong criticism from NGOs and civil society that Korea NCP has not performed well due to lack of transparency and impartiality, especially in the context of the governance of Korea NCP. Under this circumstance, this paper ⅰ) examines current status and problems of Korea NCP, ⅱ) evaluates the core criteria for function and governance of NCPs through a comparative overseas cases study, and ⅲ) suggests improvement plans for Korea NCP.

건설 산업과 ESG (부제: 중재는 ESG다)

안건형(Keon-Hyung Ahn) 한국강구조학회 2021 韓國鋼構造學會誌 Vol.33 No.5

클레임을 대상으로 하는 제3자 자금조달 제도

안건형(Keon-Hyung Ahn) 한국무역학회 2013 貿易學會誌 Vol.38 No.1