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Christy, Maria,Jisha, M.R,Kim, Ae-Rhan,Nahm, Kee-Suk,Yoo, Dong-Jin,Suh, E.K.,Kumari, T. Sri Devi,Kumar, T. Prem,Stephan, A. Manuel Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.4
Nanoscopic $Co_3O_4$ particles were prepared using avian egg membrane as a template at $800^{\circ}C$. The prepared materials were subjected to XRD, SEM, TEM and Raman spectroscopic studies. Cyclic voltammetry study shows a single step oxidation and reduction process. Electrochemical lithium insertion behavior of the materials was examined in coin cells of the 2032 configuration. The material showed a discharge capacity 600mAh/g even after 20 cycles.
Lithium Insertion Behavior of Nanoscopic Co_3O_4 Prepared with Avian Egg Membrane as a Template
Maria Christy,Jisha. M. R,김애란,남기석,유동진,서은경,T. Sri Devi Kumari,T. Prem Kumar,A. Manuel Stephan 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.4
Nanoscopic Co_3O_4 particles were prepared using avian egg membrane as a template at 800 °C. The prepared materials were subjected to XRD, SEM, TEM and Raman spectroscopic studies. Cyclic voltammetry study shows a single step oxidation and reduction process. Electrochemical lithium insertion behavior of the materials was examined in coin cells of the 2032 configuration. The material showed a discharge capacity 600mAh/g even after 20 cycles.
Role of solvents on the oxygen reduction and evolution of rechargeable Li-O<sub>2</sub> battery
Christy, Maria,Arul, Anupriya,Zahoor, Awan,Moon, Kwang Uk,Oh, Mi Young,Stephan, A. Manuel,Nahm, Kee Suk Elsevier 2017 Journal of Power Sources Vol.342 No.-
<P><B>Abstract</B></P> <P>The choice of electrolyte solvent is expected to play a key role in influencing the lithium-oxygen battery performance. The electrochemical performances of three electrolytes composed of lithium bis (trifluoromethane sulfonyl) imide (LiTFSI) salt and different solvents namely, ethylene carbonate/propylene carbonate (EC/PC), tetra ethylene glycol dimethyl ether (TEGDME) and dimethyl sulfoxide (DMSO) are investigated by assembling lithium oxygen cells. The electrolyte composition significantly varied the specific capacity of the battery. The choice of electrolyte also influences the overpotential, cycle life, and rechargeability of the battery. Electrochemical impedance spectra, cyclic voltammetry, and chronoamperometry were utilized to determine the reversible reactions associated with the air cathode.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The choice of electrolyte solvent influences the lithium/O<SUB>2</SUB> battery performance. </LI> <LI> Three solvents; TEGDME, ECPC and DMSO exhibit proper reversible reaction. </LI> <LI> TEGDME demonstrate a comparatively suitable electrode – electrolyte combination. </LI> </UL> </P>