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김형택(Hyung-Teak Kim),최진영(Jin-Young Choi),박영구(Young-Gu Park) 한국에너지기후변화학회 2018 에너지기후변화학회지 Vol.13 No.2
The cycle life was studied for a large-sized lithium battery cell produced in Korea. The 2,014 cycles of 100% DOD(depth of discharge) were observed based on 1C-rate(charging and discharging rate) and 85% of the retention capacity. The 3,305 cycles of 80% DOD were found based on the same conditions. It can be seen that there is a life extension effect of 60.9% compared to the test of 100% DOD and 80% DOD. In addition, The 3,875 cycles of 100% DOD for the electric vehicle were founded on 2C-rate and 70% retention capacity. Therefore, it is expected that the battery warranty period of the electric vehicle will be sufficiently guaranteed for 10 years. Through this data, it is possible to objectively verify the warranty period of the electric vehicle battery presented by the manufacturer as well as present basic data for evaluating the economical efficiency of the battery device.
제올라이트 13X의 입상화 방법에 따른 CO₂ 흡착특성 해석
김영훈(Kim Young Hoon),허려화(Xu Li Hua),유영돈(Yoo Young Don),최익환(Choi Ik Hwan),김형택(Kim Hyung Teak) 한국에너지기후변화학회 2008 에너지기후변화학회지 Vol.3 No.1
During the gasification of waste material, CO and H2 gases can be easily utilitied energy source of electrical generation if CO₂ is separated in synthesis gases. CO₂ is optionally separated using adsorption method under the condition of normal temperature and pressure(NTP) in this study. Alter shaped Zeolite 13X with Bentonite as binder is synthesized by hydrothermal reaction and extruded by molding methods. The adsorption efficiency is displayed weight change of adsorbent. The characteristics of manufactured adsorbent are investigated by XRD, XRF and BET. During the manufactured adsorbents, 13X-E has excellent CO₂ adsorption efficiency which is 166.08 ㎎-CO₂/g-adsorb. It has a plan to study higher CO₂ adsorption efficiency at the future work.
탄산염 광물화 반응의 최적화를 위한 사문석 전처리 특성 연구
남궁훤(Hueon Namkung),장나형(Na-Hyung Jang),이준수(Joon-Soo Lee),허려화(Li-Hua Xu),김형택(Hyung-Teak Kim) 한국에너지기후변화학회 2008 에너지기후변화학회지 Vol.3 No.1
The carbonation reaction of the carbon dioxide and Serpentine in an aqueous have been recently studied. The assessment of the heat treatment was evaluated to be used widely. In this research it was studied to know characteristic of Serpentine through heat treatment. To use FT-IR found out whether the -OH group was removed or not and TGA confirmed weight loss of Serpentine. Also Serpentine was used in experiment less than ~38 ㎛ diameter. Serpentine was treated to improve reactivity at 650℃, for I hour, which was found as the best conditions of heat treatment.
이온교환과 제조 방법에 따른 Zeolite13X의 이산화탄소 흡착성능 연구
구준모(Jun-Mo Koo),박성권(Sung-Kwon Park),김형택(Hyung-Teak Kim) 한국에너지기후변화학회 2010 에너지기후변화학회지 Vol.5 No.2
??During the gasification of waste materials, syngas (mainly CO, H₂) can be used to convert to electricity by gas engine. However, it is not suitable for generating electricity because syngas has low heating value; 3,500~4,000 ㎉/㎏ in the gasification process. So incombustible CO₂ among the syngas is selectively required to separate for increasing heating value of syngas. This study is focused on developing CO₂ adsorbent which can adsorb selectively.<br/> ??Especially it is laid emphasis on elevating CO₂ adsorption performance using the commercial zeolite 13x adsorbent by ion-exchange of aqueous solutions.<br/> ??At the experiment for elevating CO₂ absorption performance, it is selected for ion-exchange solution such as NaCI, KCI, LiCI(univalent ion) and CaCl₂(bivalent ion).<br/> ??As 1M of four aqueous solutions hold zeolite l3x with 1hr ion-exchange, zeolite 13x with NaCI ion-exchange shows the highest adsorption quantity.<br/> ??Then it was certificated that ion-exchange structure and ion concentration of CO₂ adsorbent are respectively analyzed by XRD, XRF, ICP. also adsorbent is that add organic binder and inorganic binder, CO₂ adsorption performance is measured by on-line gas analysis.
CaO 침지법을 적용한 Spent oil sand와 CO₂의 온도ㆍ압력 변화에 따른 탄산화반응성 연구
박성권(Sung-Kwon Park),심현민(Hyun-Min Shim),장나형(Na-Hyung Jang),김형택(Hyung-Teak Kim) 한국에너지기후변화학회 2009 에너지기후변화학회지 Vol.4 No.1
These days, the crude oil price is fluctuated at big width. This situation brings out the instability of the crude oil price. Oil sand is attracting interest due to stable petroleum resources supplying, high crude prices, and reserve concerns. In this study, the research was performed for fixing COz in spent oil sand which was generated from the process of bitumen extraction using the combustion process. For the fixing COz in removed bitumen spent oil sand, the experiment entrapped carbonation to fix Coz since CaO solution was soaked in spent oil sand. To examine carbonation reactivity by temperature and pressure, the experiment was performed by different temperatme, 400,500, 600 and 700℃, and different pressure, 1,3 and Satm. The resultant of the carbonation reactivity of spent oil sand and Cozwas evaluated by Thermo Gravimetry Analysis (TGA). In the result, the case of carbonation reaction in 50011 was the best reactivity. And in the experiment with the different pressure, the higher pressure, the more reactivity.