http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Karupannan, Senthil (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Chinnadurai, Deviprasath,Kim, Hee-Je,Karupannan, Senthil,Prabakar, Kandasamy CNRS 2019 NEW JOURNAL OF CHEMISTRY Vol.43 No.8
<P>Herein, a facile aqueous method was used to prepare multiscale honeycomb-structured activated carbon from mandarin peels using KOH and NaOH as activation agents, and the prepared multiscale honeycomb-structured activated carbon was carbonized under a nitrogen and argon atmosphere. All samples possessed nitrogen due to its natural abundance and exhibited enhanced specific capacitance, whereas metallic sodium (Na)-intercalated samples, which were formed due to NaOH activation, showed large pore size with increased intercalation capacitance although their surface area was reduced. Potassium has been additionally intercalated during cycling in a KOH solution and helped to sustain the micro/mesoporous honeycomb structure as well as increased the number of O-CO bonds with a concomitant reduction in the number of C-C and CC bonds. The honeycomb carbon retains up to 98% of its initial capacitance even after 7000 cycles. The presence of multiscale porosity in the interconnected carbon network structure enhances the reversible adsorption/desorption of ions in the Helmholtz double layer and hence results in high storage capacity and rate capability of the supercapacitors. The highest energy density of 10.92 W h kg<SUP>−1</SUP> at the power density of 240 W kg<SUP>−1</SUP> has been achieved and maintained up to 7.06 W h kg<SUP>−1</SUP> at the higher power density of 1740 W kg<SUP>−1</SUP>. A detailed kinetic study has been employed to better understand the specific capacitance contribution in symmetrical supercapacitors.</P>
-
Interplay between Iodide and Tin Vacancies in CsSnI<sub>3</sub> Perovskite Solar Cells
Rajendra Kumar, G.,Kim, Hee-Je,Karupannan, Senthil,Prabakar, Kandasamy American Chemical Society 2017 JOURNAL OF PHYSICAL CHEMISTRY C - Vol.121 No.30
<P>Tin -based perovskite materials have the drawbacks of high density of Sn vacancies, structural deformations of SnI6- octahedra, and oxidation of unstable Sn2+ states, resulting in poor chemical stability processed at inert and open atmosphere. In this work, we demonstrate the temperature effects on reduction of Sn vacancies (V-sn) in polymorphic CsSnI3 perovskite solar cells. Evidence of light-induced I- ion diffusion and an interplay between iodide and Sn vacancies were briefly presented. We have observed by X-ray photoelectron spectroscopy that the formation of iodide vacancies (V-I) are highly activated at 60 degrees C, contributing to the reduction of acceptor defects, mainly Sn vacancies (V-sn). The formation of SnO- and SnO2- at high temperature mitigates the Sn-I interaction and eventually increases the trap density at Au/CsSnI3 interfaces. We have observed by time-of-flight secondary ion mass spectrometry that the delocalized r ions are accumulated near the metal contacts and form AuI- ions which diffuse through the material, inhibiting the exciton transport.</P>
-
Palaniappan Selvakumar,Seetharaman Rajasekar,Anam Giridhar Babu,Karupannan Periasamy,Nanjian Raaman,Modem Sudhakara Reddy 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.5
Two hybrid strains were obtained through protoplasmic fusion between Pleurotus ostreatus var. florida and Pleurotus djamor var. roseus. The hybrid strains showed intermediate morphology (colony morphology, cultural characteristics, and fruiting body) to parents. The size and RFLP pattern of two recombinant hybrids were similar, and differed from the parental Pleurotus species. The internal transcribed spacer sequence data revealed that hybrids showed close clad with variety of Pleurotus spp. The hybrid strains showed maximum biological efficiency (138.97%) than the parental strains (110.48-119.19%). In addition, maximum proximate composition, energy values (268.28 kcal), vitamins (thiamine, riboflavin, pyridoxine, folic acid, and calcium pentothenate) and mineral contents (potassium, phosphorus, iron, calcium, and zinc) were recorded in hybrid strain. The hybrid Pleurotus sp. HS would be an important resource of food for mankind, utilize variety of agricultural waste, high amount of nutritional properties and essential food for human health.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
