Heteroatom Doped-Carbon Nanospheres as Anodes in Lithium Ion Batteries
AbstractLong cycle performance is a crucial requirement in energy storage devices. New formulations and/or improvement of “conventional” materials have been investigated in order to achieve this target. Here we explore the performance of a novel type of carbon nanospheres (CNSs) with three heteroatom co-doped (nitrogen, phosphorous and sulfur) and high specific surface area as anode materials for lithium ion batteries. The CNSs were obtained from carbonization of highly-crosslinked organo (phosphazene) nanospheres (OPZs) of 300 nm diameter. The OPZs were synthesized via a single and facile step of polycondensation reaction between hexachlorocyclotriphosphazene (HCCP) and 4,4′-sulphonyldiphenol (BPS). The X-ray Photoelectron Spectroscopy (XPS) analysis showed a high heteroatom-doping content in the structure of CNSs while the textural evaluation from the N2 sorption isotherms revealed the presence of micro- and mesopores and a high specific surface area of 875 m2/g. The CNSs anode showed remarkable stability and coulombic efficiency in a long charge–discharge cycling up to 1000 cycles at 1C rate, delivering about 130 mA·h·g−1. This study represents a step toward smart engineering of inexpensive materials with practical applications for energy devices. View Full-Text
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Pappas, G.S.; Ferrari, S.; Huang, X.; Bhagat, R.; Haddleton, D.M.; Wan, C. Heteroatom Doped-Carbon Nanospheres as Anodes in Lithium Ion Batteries. Materials 2016, 9, 35.
Pappas GS, Ferrari S, Huang X, Bhagat R, Haddleton DM, Wan C. Heteroatom Doped-Carbon Nanospheres as Anodes in Lithium Ion Batteries. Materials. 2016; 9(1):35.Chicago/Turabian Style
Pappas, George S.; Ferrari, Stefania; Huang, Xiaobin; Bhagat, Rohit; Haddleton, David M.; Wan, Chaoying. 2016. "Heteroatom Doped-Carbon Nanospheres as Anodes in Lithium Ion Batteries." Materials 9, no. 1: 35.
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