Bioinspired Hierarchical Nanofibrous Silver-Nanoparticle/Anatase–Rutile-Titania Composite as an Anode Material for Lithium-Ion Batteries

Abstract

A new bioinspired hierarchical nanofibrous silver-nanoparticle/anatase-rutile-titania (Ag-NP/A-R-titania) composite was fabricated by employing a natural cellulose substance (e.g., commercial laboratory cellulose filter paper) as the structural scaffold template, which was composed of anatase-phase titania (A-titania) nanotubes with rutile-phase titania (R-titania) nanoneedles grown on the surfaces and further silver nanoparticles (AgNPs) immobilized thereon. As it was employed as an anode material for lithium-ion batteries (LIBs), high reversible capacity, enhanced rate performance, and excellent cycling stability were achieved as compared with those of the corresponding cellulose-substance-derived nanotubular A-titania, R-titania, heterogeneous anatase/rutile titania (A-R-titania) composite, and commercial P25 powder. This benefited from its unique porous cross-linked three-dimensional structure inherited from the initial cellulose substance scaffold, which enhances the sufficient electrode/electrolyte contact, relieves the severe volume change upon cycling, and improves the amount of lithium-ion storage; moreover, the high loading content of the silver component in the composite improves the electrical conductivity of the electrode. The structural integrity of the composite was maintained upon long-term charge/discharge cycling, indicating its significant stability.

Natural Cellulose Derived Nanocomposites as Anodic Materials for Lithium‐Ion Batteries

“…15 nm). [71] The unique porous structure derived from the initial cellulose substance template, the synergistic effects in-between the anatase and rutile titania phases, and the high silver loading density of the nanocomposite resulted in improved rate performance, higher reversible capacity, and stable cycling capacity as compared with the counter materials of anatase-TiO 2 , rutile-TiO 2 , anatase-rutile-TiO 2 , and commercial P25.…”

“…As an example, a hierarchical nanofibrous silver‐particle/anatase‐rutile‐titania (Ag−NP/A−R−TiO 2 ) composite was prepared by growing rutile‐TiO 2 nanoneedles on the anatase‐TiO 2 nanotubes that templated by the cellulose filter paper, and further deposition of Ag nanoparticles (sizes ca . 15 nm) . The unique porous structure derived from the initial cellulose substance template, the synergistic effects in‐between the anatase and rutile titania phases, and the high silver loading density of the nanocomposite resulted in improved rate performance, higher reversible capacity, and stable cycling capacity as compared with the counter materials of anatase‐TiO 2 , rutile‐TiO 2 , anatase‐rutile‐TiO 2 , and commercial P25.…”

TiO2Nanoparticles Prepared by Sol-Gel Method for Anode Application in Lithium-Ion Batteries

“…A practical low operating voltage i v. An enhanced safety Several methods have been used for the synthesis of NST, including hydrothermal [4][5][6][7][8][9][10], sol-gel [5][6][7][8][9][10][11], hydrolysis [12,13], atomic layer deposition [14], and anode deposition [15], for the most reported in the literature. According to the synthesis method and to the post-thermal treatment conditions, NST of different morphologies are obtained such as nanorods [4,17], nanotubes [5-6, 8-9, 14, 17], nanofibers/nanowires [11][12][13][14][15][16][17][18][19][20], nanoparticles [6,7,10], nanocomposites [12,21], nanofilms, and nanosheets [15,22].…”

Dehydration of Alginic Acid Cryogel by TiCl4 vapor: Direct Access to Mesoporous TiO2@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

“…[29] Au nique structure was obtained with chitin as as caffold for ZrO 2 /chitin nanoassembly [30,31] with the application for supercapacitors. [32] Spongin is another attractive material to prepare MnO 2 /C [33] or TiO 2 / sponginm aterial [34] for electrochemical application or depollution, respectively.H owever,c ellulose is the most widely used template for such an approach, as both ac arbon source and template in the preparation of nanocomposite such as Ag@TiO 2 /C [35,36] or SnO 2 /C [37] as negative electrode materials for lithium-ion batteries (LIBs). Recently,t he use of AA has been developed in as ol-gelt emplated process to elaborate porous metal oxide-based catalyst.…”