Low temperature and atmospheric pressure fabrication of Li3VO4/rGO hybrid as high-performance anode for lithium-ion batteries

Surface Modification of Li3VO4 with PEDOT:PSS Conductive Polymer as an Anode Material for Li-Ion Capacitors

“…The high-resolution XPS spectrum of V 2p for the P-LVO is shown in Figure 3b. The V 2p spectrum of the P-LVO comprises two main peaks located at 516.9 and 524.4 eV, which can be assigned to the spin-orbit splitting of the components V 5+ 2p3/2 and V 5+ 2p1/2, respectively [29]. This result suggests that the surface modification with PEDOT:PSS cannot alter the valence state of the LVO.…”

“…The lower (164.3 eV) and higher (168.6 eV) binding energy peaks belong to the S atoms in the PEDOT polymer chains and the PSS fragments, respectively. The O1s spectrum of pure LVO displayed in Figure 3e shows a broad asymmetrical peak, which can be de-convoluted into two peaks centered at 529.6 and 531.4 eV, respectively [29]. They are attributed to crystal lattice O atoms (V−O) in LVO and a surface hydroxyl group, respectively.…”

Spray-drying synthesis and vanadium-catalyzed graphitization of a nanocrystalline γ-Li3.2V0.8Si0.2O4/C anode material with a unique double capsule structure

“…20,21 However, an intrinsically poor electronic conductivity (10 −7 -10 −6 S m −1 ) of LVO materials impacts negativley upon their electrochemical characteristics. 20 Considerable research has been focused on solving such intrinsic issues, involving particle down-sizing, 27 morphological approaches (hollow spheres, [28][29][30][31][32] nanobers, [33][34][35][36][37] and nanoparticles [38][39][40] ), carbon coating, [41][42][43][44][45][46][47] and the use of carbon composites, such as LVO/graphene, [48][49][50][51] LVO/reduced graphene oxide, [52][53][54][55] LVO/carbon nanowires, 56 and LVO/multiwalled carbon nanotubes. [57][58][59] In particular, spray-drying synthesis has been applied for carbon-coating and/or carbon composites as an effective method in terms of scalability and uniformity.…”