Facile fabrication of Chinese lantern-like MnO@N–C: a high-performance anode material for lithium-ion batteries

Qiu, Tian; Wang, Juan; Lu, Yanluo; Yang, Wensheng

doi:10.1039/c4ra01285b

Cited by 31 publications

(28 citation statements)

References 37 publications

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“…The dopamine hydrochloride spectrum matched that of the supplier [70]. The Raman spectra for PD show similarities to those obtained previously by other groups such as Ma et al [71], Steeves et al [5] for PD with nanoporous titanium, Lee et al [9] for coated titanium and Qiu et al [72] for MnCO 3 with PD which show bands at 1350 and 1580 cm -1 which, as for dopamine hydrochloride, are suggestive of aliphatic and aromatic components [6,71].…”

Section: Spectroscopic Analysissupporting

confidence: 72%

Probing polydopamine adhesion to protein and polymer films: microscopic and spectroscopic evaluation

2017

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Polydopamine has been found to be a biocompatible polymer capable of supporting cell growth and attachment, and to have antibacterial and antifouling properties. Together with its ease of manufacture and application, it ought to make an ideal biomaterial and function well as a coating for implants. In this paper, atomic force microscope was used to measure the adhesive forces between polymer-, protein-or polydopamine-coated surfaces and a silicon nitride or polydopamine-functionalised probes. Surfaces were further characterised by contact angle goniometry, and solutions by circular dichroism. Polydopamine was further characterised with infrared spectroscopy and Raman spectroscopy. It was found that polydopamine functionalisation of the atomic force microscope probe significantly reduced adhesion to all tested surfaces. For example, adhesion to mica fell from 0.27 ± 0.7 to 0.05 ± 0.01 nN nm -1 . The results suggest that polydopamine coatings are suitable to be used for a variety of biomedical applications.

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Section: Spectroscopic Analysissupporting

confidence: 72%

Probing polydopamine adhesion to protein and polymer films: microscopic and spectroscopic evaluation

2017

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“…Raman spectra of ZnO x (1%)-MnCO 3 , and ZnO x (1%)-MnCO 3 /(1%)HRG nanocomposites exhibited two distinct peaks at 724 and 1086 cm −1 which are a finger-print for MnCO 3 . This indicates the existence of MnCO 3 in the nanocomposite consistent with XRD analysis as displayed in Figure 5b,c [86]. Likewise, the existence of HRG in the ZnO x (1%)-MnCO 3 /(1%)HRG nanocomposite is also confirmed by the Raman spectra.…”

Section: Scanning Electron Microscopy (Sem) and Elemental Analysis (Edx)supporting

confidence: 69%

Mixed Zinc/Manganese on Highly Reduced Graphene Oxide: A Highly Active Nanocomposite Catalyst for Aerial Oxidation of Benzylic Alcohols

et al. 2017

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Nanocomposites of highly reduced graphene oxide (HRG) and ZnO x nanoparticles doped manganese carbonate containing different percentages of HRG were prepared via a facile co-precipitation method.The prepared sample calcined at 300 • C yielded i.e., ZnO x (1%)-MnCO 3 /(X%)HRG (where X = 0-7), calcination at 400 • C and 500 • C, yielded different manganese oxides i.e., ZnO x (1%)-MnO 2 /(X%)HRG and ZnO x (1%)-Mn 2 O 3 /(X%)HRG respectively. The prepared catalyst were subjected to catalytic evaluation and a comparative catalytic study between carbonates and oxides for the liquid-phase aerobic oxidation of benzylic alcohols to corresponding aldehydes using molecular oxygen as an eco-friendly oxidant without adding additives or bases. The influence of various parameters such as percentage of HRG, reaction time, catalyst amount, calcination and reaction temperature was systematically examined to optimize reaction conditions using oxidation of benzyl alcohol as a substrate model. It was found that the catalytic performance is remarkably enhanced after using HRG as catalyst co-dopant for the aerobic oxidation of alcohols, possibly owing to the presence of carbon defects and oxygenated functional groups on HRG surface. The as-synthesized catalysts were characterized by SEM, EDX, XRD, Raman, TGA, BET, and FT-IR. Under optimal conditions, the catalyst with composition ZnO x (1%)-MnCO 3 /(1%)HRG calcined at 300 • C exhibited remarkable specific activity (57.1 mmol·g −1 ·h −1 ) with 100% conversion of benzyl alcohol and more than 99% product selectivity within extremely short time (7 min). The as-prepared catalyst was re-used up to five consecutive times without significant decrease in its activity and selectivity. To the best of our knowledge, the achieved specific activity is the highest so far compared to the earlier reported catalysts used for the benzyl alcohol oxidation. A wide range of substituted benzylic and aliphatic alcohols were selectively oxidized into their corresponding aldehydes with complete convertibility and selectivity in short reaction times without over-oxidation to the acids. Due to their significant low cost, superior reproducibility, excellent catalytic efficiency, the ZnO x (1%)-MnCO 3 /(X%)HRG nanocomposites possess several application prospect in other organic chemistry reactions.

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“…Two intrinsic problems exist, however, for MnO-based anodes, low electrical conductivity and large volume changes during battery cycling, which lead to low coulombic efficiency and cyclability. To solve these problems, much effort has been devoted to constructing MnO@C coreshell composites, [14][15][16][17][18][19] MnO/graphene composites, [20][21][22][23] and MnO/ carbon composites, [24][25][26][27][28][29] which could potentially accommodate the volume changes. Core-shell structures hardly suppress the volume changes in anodes during battery cycling.…”

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confidence: 99%

Integration of MnO@graphene with graphene networks towards Li-ion battery anodes

Guo

et al. 2015

RSC Adv.

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Facile fabrication of Chinese lantern-like MnO@N–C: a high-performance anode material for lithium-ion batteries

Abstract: Chinese lantern-like MnO@N–C is prepared via a facile process, and exhibits excellent electrochemical performance as an anode material for lithium-ion batteries.

Cited by 31 publications

References 37 publications

Probing polydopamine adhesion to protein and polymer films: microscopic and spectroscopic evaluation

Probing polydopamine adhesion to protein and polymer films: microscopic and spectroscopic evaluation

Mixed Zinc/Manganese on Highly Reduced Graphene Oxide: A Highly Active Nanocomposite Catalyst for Aerial Oxidation of Benzylic Alcohols

Integration of MnO@graphene with graphene networks towards Li-ion battery anodes

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