Nano‐sheet and nano‐laminar vanadium nitride as anodes for high‐performance lithium‐ions storage. (19th August 2022)

• Record Type: Journal Article
• Authors: Liu, Rui Jia; Yang, Ling Xu; Zhang, Tian Yu; Wang, Wen Jun; Liu, Hui Jun; Zeng, Chao Liu
• Is Part Of: International journal of energy research. Volume 46:Number 15(2022)
• Page Start: 22486
• Page End: 22500
• Publication Date: 2022-08-19
• Subjects: anode -- lithium‐ion batteries -- orthorhombic V2C -- urea -- V2CTz MXene -- vanadium nitride; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.8552
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: Transition metal nitrides involving vanadium nitrides (VN) hold great prospects for alkaline metal batteries. Regrettably, the absence of environmentally friendly synthesis techniques restricts its practical applications. In this work, a rational design of nano‐sheet and nano‐laminar VN was reported via a facile urea nitrogenization technique. Nano‐laminar VN exhibits superior electrochemical performances to nano‐sheet VN as an anode for lithium‐ion batteries with a discharge capacity of 381.7 mAh g −1 at 0.5 A g −1 after 400 cycles and 738.7 mAh g −1 at 0.1 A g −1 after 200 cycles without capacity attenuation. Furthermore, Li‐ions storage mechanisms of nano‐sheet and nano‐laminar VN are pseudocapacitive accompanied by conversion reaction and intercalation pseudocapacitive, respectively. Abstract : Nano‐sheet and nano‐laminar vanadium nitrides (VN) were prepared from heating the mixture of orthorhombic V2 C and V2 CTz MXene, respectively. Results show that Nano‐laminar VN exhibits superior electrochemical performances to nano‐sheet VN as an anode for lithium‐ion batteries.