Synthesis of nitrided MoO2 and its application as anode materials for lithium-ion batteries

• Published in: Journal of alloys and compounds 2012-09, Vol.536, p.179-183
• Main Authors: Yoon, Sukeun, Jung, Kyu-Nam, Jin, Chang Soo, Shin, Kyung-Hee
• Format: Article
• Language: English
• Subjects: Anode; Applied sciences; Chemistry; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Electrochemistry; Electrodes: preparations and properties; Exact sciences and technology; General and physical chemistry; Lithium-ion batteries; Molybdenum nitride; Molybdenum oxynitride; Nitridation
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2012.04.116

► Synthesis of nitrided molybdenum oxide by nitridation. ► Superior cyclability for nitrided molybdenum oxide anodes. ► Electrochemical reaction behavior of nitrided molybdenum oxide with lithium. Nitrided MoO2 has been synthesized by hydrothermal processing followed by post-nitridation with NH3 and investigated as alternative anode materials for rechargeable lithium batteries. Characterization data reveal the presence of molybdenum nitride (γ-Mo2N and δ-MoN) and molybdenum oxynitride (MoOxNy). The nitrided MoO2 exhibits a capacity of >420mAh/g after 100cycles and good rate capability. The improved electrochemical performance of the nitrided MoO2 compared to that of molybdenum oxide (MoO2) is attributed to high electrical conductivity provided by nitrogen doping/or substitution in the oxygen octahedral site of MoO2 structure.