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Employment of Carbonaceous Materials for the Anode of Lithium Secondary Battery
Joong Kee Lee, Byung Won Cho 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2002, Vol.3 No.3 6 155-163 (9 pages)
..PAGE:1 Vol. 3, No. 3 September 2002 pp. 155-163 Employment of Carbonaceous Materials for the Anode of Lithium Secondary Battery Joong Kee Lee and Byung Won Cho Eco-Nano Research Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea e-mail: leejk@kist.re.kr (Received September 15, 2002; accepted September 25, 2002) 1. (Lithium Secondary Battery) 21 , ,... 리튬이차전지는 21세기 정보화 및 환경친화적 사회를 뒷받침하는 핵심적인 에너지저장 및 동력원으로 사용되고 있어 소형이면서도 고출력, 장수명,대용향 전지 개발을 목표로 연구가 진행되고 있다. 현재 리튬이차전지는 기존의 휴대용 전화기,notebook의 구동전원 이외에도 새로운 CDMA, PDAd의 전원으로 채용되기 때문에 소형이면서도 무게가 가벼운 리튬이차전지의 수요는 앞으로도 꾸준하게 10%이상의 시장이 확대되어질 것으로 예상되고 있다. -
The Initial Irreversible Capacity of the First Doping/Undoping of Lithium into Carbon
Chil-Hoon DOh, Hyun-Soo Kim and Seong-In Moon 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters Vol.1 No.3&4 6 148-153 (6 pages)
Lithium Ion Secondary Battery, Fig. 6. IIE and Qis values in various composite electrode- electrolyte systems. ..PAGE:6 Initial Irreversible Capacity of Li Intercalation 153 The Nikkan Kogyo Shimbun, Ltd., Tokyo, 1996, 1. [4] Dudley, J. T. et al.J. Power Sources1991,35,59. [5] Ue, M.; Mori, S. J. Electrochem. Soc.1995,142, 2577. [6] Hirasawa, K. A.; Sato, T.; Asahina, H.; Yamaguchi, S.; Mori, S.... -
The Polyaniline Electrode Doped with Li Salt and Protonic Acid in Lithium Secondary Battery
Ryu. Kwang-Sun, Kim. Kwang-Man, Hong. Young-Sik, Park. Yong-Joon, Jang. Soon-Ho 대한화학회 Bulletin of the Korean Chemical Society 5 Pages
대한화학회 Bulletin of the Korean Chemical Society 2002, Vol.23 No.8 1144-1148 (5 pages)
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Three-dimensional porous graphene materials for environmental applications
Muruganantham Rethinasabapathy, Sung-Min Kang, Sung-Chan Jang, Yun Suk Huh 한국탄소학회 Carbon Letters 13 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 1 1-13 (13 pages)
ad- sorption of U(VI) by nitrogen- and oxygen-containing functional groups using a zero-valent iron-polyaniline-GA (Fe-PANI-GA) composite. The PANI, which contains abundant amounts of pri- mary and secondary amino groups, was used to remove U(VI) with a maximum removal capacity of 350.47 mg g 1 at pH 5.5. Radiocesium ( 137Cs) is a hazardous radionuclide which has adverse effects on human healt... Porous materials play a vital role in science and technology. The ability to control their pore structures at the atomic, molecular, and nanometer scales enable interactions with atoms, ions and molecules to occur throughout the bulk of the material, for practical applications. Three-dimensional (3D) porous carbon-based materials (e.g., graphene aerogels/hydrogels, sponges and foams) made of graphene or graphene oxide-based networks have attracted considerable attention because they offer low... -
Study on urea precursor effect on the electroactivities of nitrogen-doped graphene nanosheets electrodes for lithium cells
Ki-Yong Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 5 40-46 (7 pages)
next-generation secondary battery. Among many candidates undergoing intensive research, the lithium-sulfur (Li-S) battery has unusually high specifc energy density (2600 Wh kg 1) and high theoretical capacity (1675 mAh g 1) [4-6]. A Li-S battery not only has electrochemical advantages, but also lower price because elemental sulfur is abundant in the environment and could get easily be provided... Nitrogen-atom doped graphene oxide was considered to prevent the dissolution of polysulfide and to guarantee the enhanced redox reaction of sulfur for good cycle performance of lithium sulfur cells. In this study, we used urea as a nitrogen source due to its low cost and easy preparation. To find the optimum urea content, we tested three different ratios of urea to graphene oxide. The morphology of the composites was examined by field emission scanning electron microscope. Functional groups and... -
Effects of phosphorus content and operating temperature on the electrochemical performance of phosphorus-doped soft carbons
Eun Hee Kim and Yongju Jung 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 7 277-281 (5 pages)
J Korean Electrochem Soc, 15, 207 (2012). http://dx.doi.org/10.5229/JKES.2012.15.4.207. [10] Jeong BO, Jeong SH, Park MS, Kim S, Jung Y. Synthesis of amorphous carbon materials for lithium secondary batteries. J Nanosci Nanotechnol, 14, 7788 (2014). http://dx.doi.org/10.1166/ jnn.2014.9457. [11] Jeong SH, Koh JY, Kim TJ, Jung Y. High-performance soft car- bons prepared by treatment with various... A series of high capacity soft carbons with different phosphorus contents were successfully prepared by carbonizing petroleum cokes treated with hypophosphorous acid at 900°C. The effect of phosphorus content on the electrochemical performance of the soft carbons was extensively investigated. The P-doped soft carbons exhibited greatly enhanced discharge capacities and outstanding rate capabilities with increasing phosphorus content. In addition, the influence of temperature on the... -
Effect of microporosity on nitrogen-doped microporous carbons for electrode of supercapacitor
Eun-A Cho, Seul-Yi Lee, Soo-Jin Park 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 9 210-213 (4 pages)
to secondary batteries [1-3]. Recently, various carbon- based electrodes have been employed in supercapacitors because of their good electrical conductivity and large pseudocapacitance; however, they exhibit low capacitance values [4-6]. To improve their capacitance, nitrogen-containing functional groups are incorporated into the carbon materials. The pseudocapacitance originates from the... Nitrogen-doped microporous carbons were prepared using a polyvinylidene fluoride/melamine mixture. The electrochemical performance of the nitrogen-doped microporous carbons after being subjected to different carbonization conditions was investigated. The nitrogen to carbon ratio and specific surface area decreased with an increase in the carbonization temperature. However, the maximum specific capacitance of 208 F/g was obtained at a carbonization temperature of 800°C because it produced the... -
Synthesis of thin-multiwalled carbon nanotubes by Fe-Mo/MgO catalyst using sol-gel method
Prashant Dubey, Sang Kyu Choi, Bawl Kim, Cheol Jin Lee 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.2 5 99-108 (10 pages)
Powder X-ray diffraction (XRD, Rigaku D/MAX Rint 2000, diffractometer) analysis of the catalyst materials was carried out at room temperature using Cu Kα radiation (1.5418 A) and a graphite secondary beam monochromator. The samples were mounted on a glass plate for X-ray measurements. Intensity was measured by a step scan in the 2θ range of 10-80º with a step of 0.05º and by a measuring... -
Improvement in ammonia gas sensing behavior by polypyrrole/multi-walled carbon nanotubes composites
Woo Kyung Jang, Jumi Yun, Hyung-Il Kim, Young-Seak Lee 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2012, Vol.13 No.2 3 88-93 (6 pages)
transistors [14], light-emitting diodes [15], so- lar cells [16,17], electrochromic devices [18], electronic circuits [19], elastic textile composites [20], supercapacitors for energy storage and secondary batteries [21], protection of metals [22], ion exchange membranes responding to external stimulations [23], and sensors and biosensors [24,25]. Preparation of PPy/multi-walled CNTs (MWCNTs)...