title: An Enhanced High-Rate Na3V2(PO4)3-Ni2P Nanocomposite Cathode with Stable Lifetime for Sodium-Ion Batteries.
abstract: Herein, we report on a high-discharge-rate Na3V2(PO4)3-Ni2P/C (NVP-NP/C) composite cathode prepared using a polyol-based pyro synthesis for Na-ion battery applications. X-ray diffraction and electron microscopy studies established the presence of Na3V2(PO4)3and Ni2P, respectively, in the NVP-NP/C composite. As a cathode material, the obtained NVP-NP/C composite electrode exhibits higher discharge capacities (100.8 mAhg-1at 10.8 C and 73.9 mAhg-1at 34 C) than the NVP/C counterpart electrode (62.7 mAhg-1at 10.8 C and 4.7 mAhg-1at 34 C), and the composite electrode retained 95.3% of the initial capacity even after 1500 cycles at 16 C. The enhanced performance could be attributed to the synergetic effect of the Ni2P phase and nanoscale NVP particles, which ultimately results in noticeably enhancing the electrical conductivity of the composite. The present study thus demonstrates that the Na3V2(PO4)3-Ni2P/C nanocomposite is a prospective candidate for NIB with a high power/energy density.
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Jinju
authors.initials: J
authors.lastname: Song
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Sohyun
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Vinod
authors.initials: V
authors.lastname: Mathew
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Jihyeon
authors.initials: J
authors.lastname: Gim
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Sungjin
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Jeonggeun
authors.initials: J
authors.lastname: Jo
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Seokhun
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Muhammad Hilmy
authors.initials: MH
authors.lastname: Alfaruqi
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Joseph Paul
authors.initials: JP
authors.lastname: Baboo
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: In-Ho
authors.initials: IH
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Sun-Ju
authors.initials: SJ
authors.lastname: Song
authors.affiliation: Department of Materials Science and Engineering, Chonnam National University , 300 Yongbongdong, Bukgu, Gwangju 500-757, South Korea.
authors.forename: Jaekook
authors.identifier: http://orcid.org/0000-0002-6638-249X
authors.initials: J
authors.lastname: Kim
keywords: Na3V2(PO4)3; Ni2P; carbon coating; cathode; nanocomposite; sodium ion battery