TY - JOUR
T1 - Hierarchically porous Li1.2Mn0.6Ni0.2O2 as a high capacity and high rate capability positive electrode material
AU - Duraisamy, Shanmughasundaram
AU - Penki, Tirupathi Rao
AU - Nookala, Munichandraiah
N1 - Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2016.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Layered composite samples of lithium-rich manganese oxide (Li1.2Mn0.6Ni0.2O2) are prepared by a reverse microemulsion route employing a soft polymer template and studied as a positive electrode material. The product samples possess dual porosity with distribution of pores at 3.5 and 60 nm. Pore volume and surface area decrease on increasing the temperature of preparation. Nevertheless, the electrochemical activity of the composite increases with an increase in temperature. The discharge capacity value of the samples prepared at 800 and 900 °C is about 240 mA h g-1 at a specific current of 25 mA g-1 with a good cycling stability. The composite sample heated at 900 °C possesses a high rate capability with a discharge capacity of 100 mA h g-1 at a specific current of 500 mA g-1. The high rate capability is attributed to porous nature of the composite sample.
AB - Layered composite samples of lithium-rich manganese oxide (Li1.2Mn0.6Ni0.2O2) are prepared by a reverse microemulsion route employing a soft polymer template and studied as a positive electrode material. The product samples possess dual porosity with distribution of pores at 3.5 and 60 nm. Pore volume and surface area decrease on increasing the temperature of preparation. Nevertheless, the electrochemical activity of the composite increases with an increase in temperature. The discharge capacity value of the samples prepared at 800 and 900 °C is about 240 mA h g-1 at a specific current of 25 mA g-1 with a good cycling stability. The composite sample heated at 900 °C possesses a high rate capability with a discharge capacity of 100 mA h g-1 at a specific current of 500 mA g-1. The high rate capability is attributed to porous nature of the composite sample.
UR - http://www.scopus.com/inward/record.url?scp=84957900343&partnerID=8YFLogxK
U2 - 10.1039/c5nj02423d
DO - 10.1039/c5nj02423d
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AN - SCOPUS:84957900343
SN - 1144-0546
VL - 40
SP - 1312
EP - 1322
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 2
ER -