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Systematic Analysis for the Effects of Atmospheric Pollutants in Cathode Feed on the Performance of Proton Exchange Membrane Fuel Cells
Yoon. Young-Gon, Choi. Insoo, Lee. Chang-Ha, Han. Jonghee, Kim. Hyoung-Juhn, Cho. EunAe, Yoo. Sung Jong, Nam. Suk Woo, Lim. Tae-Hoon, Yoo 대한화학회 Bulletin of the Korean Chemical Society 7 Pages
대한화학회 Bulletin of the Korean Chemical Society 2014, Vol.35 No.12 3475-3481 (7 pages)
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Effect of added mesophase pitch during the pitch synthesis reaction of PFO
Ji Hong Kim, Jong Gu Kim, Chul Wee Lee, Ki Bong Lee, Ji Sun Im 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.23 7 48-54 (7 pages)
additive during the pitch synthesis reaction of pyrolyzed fuel oil (PFO). Two effects are generated by adding MP. One is an enhancement of thermal stability due to the high thermal property of the additive; the other is that the volatile compounds that were removed by vaporization of PFO during the thermal reaction can participate in the pitch synthesis reaction (PFO→pitch) more efficiently. The effect differs according to the amount of the additive. When the amount of the additive is less than... -
Biologically activated graphite fiber electrode for autotrophic acetate production from CO2 in a bioelectrochemical system
Chae Ho Im, Young Eun Song, Byong-Hun Jeon, Jung Rae Kim 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 12 76-80 (5 pages)
Recently, microbial electrosynthesis (MESs) has been highlighted for the purpose of biological CO2 reduction with simultaneous production of intermediates and value-added chemicals. The bioelectrochemical system (BES), which employs microorganisms and a bacterial community as a biocatalyst, has been developed to convert CO2, a greenhouse gas, into liquid biofuels, such as ethanol and butanol, as well as platform chemicals [1]. Several bacterial species, called cathodophilic microorganisms (e.g.,... -
Photocatalytic degradation and antibacterial investigation of nano synthesized Ag₃VO₄ particles @PAN nanofibers
Prem Singh Saud, Zafar Khan Ghouri, Bishweshwar Pant, Taehee An, Joong Hee Lee, Mira Park, Hak-Yong Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 5 30-36 (7 pages)
Well-dispersed Ag₃VO₄ nanoparticles @polyacrylonitrile (PAN) nanofibers were synthesized by an easily controlled, template-free method as a photo-catalyst for the degradation of methylene blue. Their structural, optical, and photocatalytic properties have been studied by X-ray diffraction, transmission electron microscopy, field-emission scanning electron microscopy equipped with rapid energy dispersive analysis of X-ray, photoluminescence, and ultraviolet?visible spectroscopy. The... -
Bulk graphite: materials and manufacturing process
Sang-Min Lee, Dong-Su Kang and Jea-Seung Roh 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 1 135-146 (12 pages)
Graphite can be classified into natural graphite from mines and artificial graphite. Due to its outstanding properties such as light weight, thermal resistance, electrical conductivity, thermal conductivity, chemical stability, and high-temperature strength, artificial graphite is used across various industries in powder form and bulk form. Artificial graphite of powder form is usually used as anode materials for secondary cells, while artificial graphite of bulk form is used in steelmaking... -
Carbon-allotropes: synthesis methods, applications and future perspectives
P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)
The element carbon has been used as a source of energy for the past few hundred years, and now in this era of technology, carbon has played a significant and very prominent role in almost all fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of... -
Carbon nanospheres synthesized via solution combustion method: their application as an anode material and catalyst for hydrogen production
Vivek Dhand, M Venkateswer Rao, J. S. Prasad, Garima Mittal, Kyong Yop Rhee, Hyeon Ju Kim, Dong Ho Jung 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 7 198-202 (5 pages)
Amorphous agglomerates of carbon nanospheres (CNS) with a diameter range of 10-50 nm were synthesized using the solution combustion method. High-resolution transmission electron microscopy (HRTEM) revealed a densely packed high surface area of SP2-hybridized carbon; however, there were no crystalline structural components, as can be seen from the scanning electron microscopy, HRTEM, X-ray diffraction, Raman spectroscopy, and thermal gravimetric analyses. Electrochemical and thermo catalytic... -
Enhanced electrocapacitive performance and high power density of polypyrrole/graphene oxide nanocomposites prepared at reduced temperature
Harish Mudila, Varsha Joshi, Sweta Rana, Mohmd. Ghulam Haider Zaidi, Sarfaraz Alam 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 3 171-179 (9 pages)
An attempt was made to investigate the effect of the preparation temperature on the electrocapacitive performance of polypyrrole (PPY)/graphene oxide (GO) nanocomposites (PNCs). For this purpose, a series of PNCs were prepared at various temperatures by the cetyltrimethylammonium bromide-assisted dilute-solution polymerization of pyrrole in presence of GO (wt%) ranging from 1.0 to 4.0 with ferric chloride as an oxidant. The formation of the PNCs was ascertained through Fourier-transform infrared... -
연료중의 이산화탄소 불순물에 의한 고분자전해질연료전지의 성능변화 연구
서중근, 권준택, 김준범, Seo. Jung-Geun, Kwon. Jun-Taek, Kim. Jun-Bom 한국전기화학회 전기화학회지 5 Pages
한국전기화학회 전기화학회지 2008, Vol.11 No.1 42-46 (5 pages)
여러 성분의 불순물이 포함되어 있다. CO, $CO_2$, $H_2S$, $NH_3$, $CH_4$등의 불순물이 포함된 수소연료가 PEM fuel cell에 공급되면 연료전지 성능에 영향을 준다고 보고되어 있다. 이러한 영향에는 전극 촉매의 피독에 의한 kinetic losses, 전해질막과 촉매이온층의 양이온 전도성 감소에 의한 ohmic losses 그리고 촉매층의 구조나 소수성 감소에 의한 mass transport losses가 있다. 개질기에서 생산된 수소연료는 약 73%의 $H_2$와 20% 이하의 $CO_2$, 5.8% 이하의 $N_2$, 2% 이하의 $CH_4$, 10ppm 이하의 CO로 최종 공급된다. 본... -
공기극과 연료극의 복합 황불순물에 의한 고분자 전해질막 연료전지의 성능에 미치는 영향
이수, 진석환, Lee. Soo, Jin. Seok-Hwan 한국유화학회 한국유화학회지 5 Pages
한국유화학회 한국유화학회지 2012, Vol.29 No.4 594-598 (5 pages)
고분자 전해질막 연료전지는 연료극의 연료와 공기극의 공기에 각각 $H_2S$와 $SO_2$이 포함되어 있을 때 그 성능이 심각하게 감소한다. 본 연구는 고분자전해질막 연료전지의 공기극과 연료극에 1 ppm에서 10 ppm의 불순물 가스를 공급하여 전기적 성능측정을 통해 복합적인 황불순물이 단위전지에 미치는 영향을 확인하였다. 최적의 운전조건에서 불순물가스를 피독하였을 때 $SO_2$와 $H_2S$의 농도가 증가할수록 성능이 급격히 감소하였다(단위전지 온도 $65^{circ}C$, 상대습도 100%). 그리고 황의 흡착은 MEA의 백금 촉매층 표면서... -
과일폐기물을 이용한 DEFC용 바이오에탄올 제조 및 특성에 관한 연구
이남진, 김현수, 차인수, 최정식, Lee. Nam-Jin, Kim. Hyun-Soo, Cha. In-Su, Choi. Jeong-Sik 한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 8 Pages
한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 2011, Vol.22 No.2 257-264 (8 pages)
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수소연료 중 일산화탄소의 고분자전해질 연료전지에 대한 영향
권준택, 김준범, Kwon. Jun-Taek, Kim. Jun-Bum 한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 8 Pages
한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 2008, Vol.19 No.4 291-298 (8 pages)
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수소연료 중의 메탄에 의한 고분자전해질 연료전지 성능변화 연구
서중근, 권준택, 김준범, 정종태, 김우식, Seo. Jung-Geun, Kwon. Jun-Taek, Kim. Jun-Bum, Chung. Jong-Tae, Kim. Woo-Sik 한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 7 Pages
한국수소및신에너지학회 한국수소 및 신에너지학회 논문집 2007, Vol.18 No.4 432-438 (7 pages)
