Co3O4 nanocubes homogeneously assembled on few-layer graphene for high energy density lithium-ion batteries

Xu, Ji; Wu, Jinsong; Luo, Langli; Chen, Xinqi; Qin, Huibin; Dravid, Vinayak P.; Mi, Shao‐Bo; Jia, Chun‐Lin

doi:10.1016/j.jpowsour.2014.10.106

Cited by 167 publications

(68 citation statements)

References 30 publications

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“…It can be identified from the image that the Co2p spectra consisted of two main intensity peaks. The peak at the low binding energy was [42]. In comparison with Co 3?…”

Section: X-ray Photoelectron Spectroscopy Analysismentioning

confidence: 90%

Synthesis and conductivity properties of Gd0.8Ca0.2BaCo2O5+δ double perovskite by sol–gel combustion

Zhang

Lü

Wei

et al. 2015

J Mater Sci: Mater Electron

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Double perovskite oxides Gd 0.8 Ca 0.2 BaCo 2-O 5?d have been successfully prepared by EDTA-citrate complexation process. The prepared samples were characterized by means of thermogravimetry-differential analysis, X-ray diffraction, Fourier transform infrared spectroscopy techniques. These analyses suggested that pure Gd 0.8 Ca 0.2 BaCo 2 O 5?d phase could be formed when the pH value was maintained above three and calcination temperature was higher than 850°C. The conductivity properties analyzed by means of four probes method, scanning electron microscopy and X-ray photoelectron spectroscopy indicated an improvement in conductivity with a high value of nearly 1200 S/cm, which was due to an increase in the number of small polaron hopping conduction units, Co 3? -O-Co 4? . Interestingly, the Gd 0.8-Ca 0.2 BaCo 2 O 5?d samples exhibited a semiconducting behavior through a wide range of temperature below 100°C and a metallic behavior at 100-500°C, thereby demonstrating that Gd 0.8 Ca 0.2 BaCo 2 O 5?d could meet the requirements of a smart material.

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“…It can be identified from the image that the Co2p spectra consisted of two main intensity peaks. The peak at the low binding energy was [42]. In comparison with Co 3?…”

Section: X-ray Photoelectron Spectroscopy Analysismentioning

confidence: 90%

Synthesis and conductivity properties of Gd0.8Ca0.2BaCo2O5+δ double perovskite by sol–gel combustion

Zhang

Lü

Wei

et al. 2015

J Mater Sci: Mater Electron

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“…The Co 2p 3/2 spectrum can be deconvoluted into five peaks. The two peaks appear at 779.5 and 780.7 eV could be attributed to Co 3+ and Co 2+ configuration, respectively [18,[53][54][55][56][57]. The peak at 782.1 eV could be surface hydroxyls, i.e.…”

Section: Effect Of Microwave Power On the Physicochemical Properties mentioning

confidence: 96%

“…Co-OH phase [ 53,55]. The low intensity peaks appear at 785.9 and 790.0 eV are characteristic shake-up satellites of Co 3 O 4 [3,11,29,[52][53][54][55][56][57] and Co(OH) 2 [ 55,57], respectively. [3,12,18,29,30,[54][55][56], while the peak at 531.4 eV indicates the presence of surface OH (hydroxyl) species [12,18,29,30,55], probably in the form of Co-OH.…”

Section: Effect Of Microwave Power On the Physicochemical Properties mentioning

confidence: 97%

“…CTAB is classified as a cationic surfactant and its critical micelle concentration (CMC) is 0.9-1.0 mmol/L [ 51]. It was reported that the transition from spherical micelles to rod-like micelles takes place at concentrations higher than the CMC value of spinel [3,11,12,18,29,[52][53][54][55][56][57]. The energy difference between these two peaks is approximately 15.4 eV, indicates the co-existence of Co(II) and Co(III) on the surface of the Co 3 O 4 -280 sample and in agreement with the literature data [12,18,29,52,[52][53][54][55][56][57].…”

Section: Effect Of Microwave Power On the Physicochemical Properties mentioning

confidence: 99%

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Effect of microwave power on the thermal genesis of Co3O4 nanoparticles from cobalt oxalate micro-rods

Abu-Zied

Bawaked

Kosa

et al. 2015

Applied Surface Science

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“…Following the trend begun in 2014, this year was mainly characterized by a large number of works focused on long-term cyclability tests (e.g., ≥1000 cycles), generally performed at medium/high currents (e.g., ≥1 A g −1 ). Indeed, graphene-containing insertion (e.g., Li 3 VO 4 , [351][352][353] TiO 2 [ 354,355 ] and LTO [ 356 ] ), conversion (e.g., CoFe 2 O 4 , [ 357 ] Co 3 O 4 , [ 358 ] FeS 2 , [ 359 ] ) and alloying (e.g., Si [360][361][362] and SnO 2 [ 363 ] ) binary hybrids, as well as ternary analogues, [364][365][366][367] showed remarkable results in terms of specifi c gravimetric capacity retained after long cycling. Moreover, other intermetallic compounds (e.g., SnSb [ 368,369 ] ) and metal oxides (e.g., Fe 3 O 4 [ 370,371 ] and MnO [ 372 ] ), when combined with graphene, showed improved cycling stability with respect to their bare analogues.…”

mentioning

confidence: 99%

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

et al. 2016

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that its extraordinary properties would enable revolutionary new technologies, which gave birth to the "graphene era". [ 3,4 ] Relying on this scenario, in 2013, the European Union launched the ¤1 billion "Graphene Flagship" project aimed to investigate the properties of this new form of carbon for various applications (e.g., electronics, sensors and energy storage devices), with the ambitious goal of guiding graphene from laboratories to commercial applications within a decade. [ 5,6 ] In the same period, the Chinese Government set up a similar investment to mass-produce graphene as thin fi lms (e.g., for touchscreen electrodes) and platelets (e.g., for use in batteries). [ 6 ] In the following years, hundreds of patents, mainly focused on manufacturing and application in energy storage, were fi led and the worldwide production of graphene and graphene-containing materials rapidly increased. Although a few Chinese industries claimed to already use graphene-containing materials for smartphone production, no revolutionary practical application relying on graphene has been yet developed. [ 6 ] Specifi cally with respect to the battery fi eld, a close analysis of the scientifi c literature reveals a struggle to meet the ambitious initial targets. A potential loss of focus from the fi nal application caused by hype and ease of publication on such a novel matter, together with the delivery of very misleading information [ 7,8 ] and erroneous statements [ 7 ] concerning the use of graphene in batteries are emerging as possible reasons of the ineffective graphene-era outburst. In this progress report, we do not focus on production and classifi cation of graphene and graphene-containing materials, which were already well reported in the past years. [ 3,[9][10][11] In contrast, due to the lack of an exhaustive analysis of the progression of the use of such materials in lithium-ion battery (LIB) anodes, we report here a critical evaluation of the most prominent research papers published from 2008 until the end of 2015. As shown in Figure 1 , three different stages of the graphene research in LIB anodes can be distinguished: a fi rst stationary phase between 2008 and 2010 where the lithium-ion storage properties of different graphene and graphene-containing materials were preliminarily explored, a second exponential stage, spanning from 2010 to 2014, where graphene and graphene-containing anode materials were broadly developed and investigated, and fi nally, a third phase, (i.e., starting from 2015), where the research seems to have approached a plateau. After Used as a bare active material or component in hybrids, graphene has been the subject of numerous studies in recent years. Indeed, from the fi rst report that appeared in late July 2008, almost 1600 papers were published as of the end 2015 that investigated the properties of graphene as an anode material for lithium-ion batteries. Although an impressive amount of data has been collected, a real advance in the fi eld still seems to be missing. In this framework, atten...

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Co3O4 nanocubes homogeneously assembled on few-layer graphene for high energy density lithium-ion batteries

Cited by 167 publications

References 30 publications

Synthesis and conductivity properties of Gd0.8Ca0.2BaCo2O5+δ double perovskite by sol–gel combustion

Synthesis and conductivity properties of Gd0.8Ca0.2BaCo2O5+δ double perovskite by sol–gel combustion

Effect of microwave power on the thermal genesis of Co3O4 nanoparticles from cobalt oxalate micro-rods

Critical Insight into the Relentless Progression Toward Graphene and Graphene‐Containing Materials for Lithium‐Ion Battery Anodes

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