A nanofibrous polypyrrole/silicon composite derived from cellulose substance as the anode material for lithium-ion batteries

Li, Jiao; Huang, Jianguo

doi:10.1039/c5cc05300e

Cited by 42 publications

(36 citation statements)

References 47 publications

(48 reference statements)

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“…(1)]; and the weak broad peak at 1.3–2.0 V relates to the initiation of the conversion reaction . The peak at 0.65 V is ascribed to the irreversible formation of the solid–electrolyte interface (SEI) layers; and the strong peak located at 0.20 V is attributed to the conversion reaction, resulting in the formation of metallic Mo nanoparticles and the Li 2 O phase [Eq. (2)] .…”

Section: Resultsmentioning

confidence: 99%

“…In particular, LbL‐based biotemplated synthesis has drawn much attention in the recent years for the fabrication of nanostructured materials with tailored structures and functionalities . As demonstrated by our previous studies and other reports in the literature, a variety of functional inorganic materials with nanoscale structural features have been fabricated by employing natural cellulose as the ideal template or scaffold. When utilized as anode materials for LIBs, they showed enhanced electrochemical performances due to sophisticated hierarchical structures .…”

Section: Introductionmentioning

confidence: 94%

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Self‐Assembly Approach for Synthesis of Nanotubular Molybdenum Trioxide/Titania Composite Anode for Lithium‐Ion Batteries

Zhang

Jia

et al. 2017

Energy Tech

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A nanotubular composite composed of titania nanotubes coated with a thin layer of molybdenum trioxide was fabricated by employing natural cellulose (ordinary filter paper) as a template. The cellulose nanofibers were precoated with an ultrathin titania gel film by the surface sol–gel process. These nanofibers were then further coated with double layers of a positively charged poly(diallyldimethylammonium chloride) layer and a negatively charged polyoxomolybdate cluster layer deposited by the layer‐by‐layer self‐assembly approach. The as‐prepared composite was calcined in air to yield a series of MoO3/TiO2 nanocomposites with varied contents of MoO3. As an anode material for lithium‐ion batteries, the composite showed improved electrochemical performances, such as excellent reversible capacity, cycling stability, and rate capability; these benefited from the hierarchical three‐dimensional nanostructures of the composites derived from the cellulose substance, and the buffering effect of the robust titania nanotubes to maintain the structural integrity of the electrode.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

Self‐Assembly Approach for Synthesis of Nanotubular Molybdenum Trioxide/Titania Composite Anode for Lithium‐Ion Batteries

Zhang

Jia

et al. 2017

Energy Tech

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“…A high‐resolution O 1 s XPS spectrum of the titania‐54.3 %‐silicon composite (Figure b) shows two peaks at 530.0 and 532.4 eV, which are attributed to Ti−O and Si−O, respectively . The high‐resolution spectrum of the Si 2 p region of the sample is shown in Figure c; the peaks located at 99.9 eV are indexed to metallic silicon, and the two other peaks located at 100.9 and 103.0 eV are indexed to silicon oxide (SiO x , x <2; and SiO 2 ) owing to the oxidation of silicon nanoparticles in air . This silicon oxide layer could serve as a buffer layer for volume changes to the silicon nanocrystals upon charge/discharge cycles when the composite is employed as the anode of LIBs .…”

Section: Resultsmentioning

confidence: 99%

“…To this end, the self‐assembly technique is generally adopted . Some nanostructured metal oxides or silicon‐related electrode materials have also been prepared by employing natural cellulose substances as templates or scaffolds …”

Section: Introductionmentioning

confidence: 99%

A Bioinspired Nanofibrous Titania/Silicon Composite as an Anode Material for Lithium‐Ion Batteries

2017

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A hierarchical nanofibrous titania/silicon composite composed of anatase titania nanoparticles anchored as a thin coating layer on the surface of a silicon nanofiber was synthesized by employing natural cellulose substance (e.g., commercial laboratory filter paper) as a template. It was obtained through magnesiothermic reduction of the titania/silica replica of a cellulose substance prepared by a sol–gel process. When used as an anode material for lithium‐ion batteries, it showed improved electrochemical performances that were superior to those of the bare silicon counterpart, and which improved with increasing titania content in the composites. For the composite with 54.3 wt % titania and titania nanoparticles with sizes of about 12 nm, it delivered a specific capacity of 498.9 mA h g−1 after 200 charge/discharge cycles at a current density of 200 mA g−1. The enhanced electrochemical performances of the composite are attributed to its unique network structure, as well as the buffering effect of the titania coating layer for huge volume changes to the silicon fiber during repeated lithiation and delithiation processes.

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“…A nanofibrous polypyrrole/silicon (PPy/Si) composite composed of PPy particles (diameters ca . 50–100 nm) coated on the hierarchical Si nanofibers was fabricated by employing natural cellulose substance as the structural template (Figures a,b) . The nanofibrous silicon matrix was resulted from the magnesiothermic reduction of the silica replica of the filter paper, which was prepared through a sol‐gel method using TMOS as the precursor.…”

Section: Silicon Based Nanocompositesmentioning

confidence: 99%

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

Lin

Huang

2019

The Chemical Record

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Bio‐inspired synthetic method provides an effective shortcut to fabricate functional nanostructured materials with specific morphologies and designed functionalities. Natural cellulose substances (e. g., commercial laboratory cellulose filter paper) possesses unique three‐dimensionally cross‐linked porous structures and abundant functional groups for the functional modification on the surfaces. The deposition of metal oxide gel film on the surfaces of the cellulose nanofibers is facilely to be achieved through the surface sol‐gel process, resulting in metal oxide replicas of the initial cellulose substance or metal‐oxide/carbon nanocomposites. Moreover, the as‐deposited metal oxide gel films coated on the cellulose fiber surfaces provide ideal platforms for the further formation of specific functional assemblies, and eventually to the corresponding nanocomposite materials. Based on this methodology, various nanostructured composites were prepared and employed as anodic materials for lithium‐ion batteries, including metal‐oxides‐based (such as SnO2, TiO2, MoO3, FexOy, and SiO2) and Si‐based composites, as summarized in this personal account. Benefiting from the unique hierarchically porous network structures and the synergistic effects among the composite components of the anodic materials, the transfer of electrons/ions is accelerated and the structural stability of the electrode is enhanced, leading to the improved lithium storage performances and promoted cycling stability.

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A nanofibrous polypyrrole/silicon composite derived from cellulose substance as the anode material for lithium-ion batteries

Cited by 42 publications

References 47 publications

Self‐Assembly Approach for Synthesis of Nanotubular Molybdenum Trioxide/Titania Composite Anode for Lithium‐Ion Batteries

Self‐Assembly Approach for Synthesis of Nanotubular Molybdenum Trioxide/Titania Composite Anode for Lithium‐Ion Batteries

A Bioinspired Nanofibrous Titania/Silicon Composite as an Anode Material for Lithium‐Ion Batteries

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

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