Carbon layer on the surface of PNb9O25 nanowires offers lots of areas for charge transfer. Issue 18 (15th December 2020)

• Record Type: Journal Article
• Authors: Yu, Haoxiang; Zhang, Jundong; Zheng, Runtian; Xia, Maoting; Deng, Chenchen; Zhang, Xikun; Yan, Huihui; Shu, Jie; Wang, Zhen-Bo
• Is Part Of: Ceramics international. Volume 46:Issue 18(2020)Part A
• Page Start: 29073
• Page End: 29079
• Publication Date: 2020-12-15
• Subjects: PNb9O25 -- Carbon coating -- Proposed theoretical model -- Mass transfer -- Electron transfer; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.08.079
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Carbon coating always has a positive effect on improving the electrochemical performance of electrode materials for lithium ions batteries and its mechanism has once drawn great attention, yet few studies offer a model to elaborate on it. In this study, we select PNb9 O25 nanowires as anode material and coat carbon on them to investigate how carbon layer does affect its electrochemical performance. Meanwhile, a theoretical model has proposed for the investigation of mass transfer and electron transfer at the surface of PNb9 O25 . The result suggests that due to the presence of carbon layer, mass transfer and electron transfer at the surface of PNb9 O25 shows a decent boost, leading to the improvement of electrochemical performance at the high current density.