Large surface area sucrose-based carbons via template-assisted routes: Preparation, microstructure, and hydrogen adsorption properties

Cai, Jinjun; Yang, Menglong; Xing, Yanlong; Zhao, Xuebo

doi:10.1016/j.colsurfa.2013.12.063

Cited by 30 publications

(12 citation statements)

References 47 publications

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“…• C for sucrose precursor lead to higher I D /I G ratio (Figure 4c), in agreement with previous study, 47 indicating increased ordering. This can be explained by the formation of larger graphitic domains at higher temperature.…”

Section: Resultssupporting

confidence: 81%

“…These are generally attributed to the carbon matrix formed from the carbonization of PVA or sucrose. [47][48][49] To confirm this, the XRD patterns of carbons obtained from the carbonization of PVA or sucrose, only without silicon, were also recorded, assuming that the XRD signature would be similar for pure carbons and carbon matrix present in Si/C composites, and then both were compared to commercial graphite (KS6). The XRD peak positions of the obtained carbon (Figure 1b) are indeed in agreement with the peak shoulders observed in XRD patterns of Si/C composites ( Figure 1a) and correspond to (002) and (100/101) reflections, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The composites contain mesopores as well, leading to a pore size distribution similar to that earlier reported for sucrose-based carbons. 47 Figure 6b shows that also the heating rate and temperature used during the synthesis process have an effect on the size of the pores formed in the sucrose-based composites: at synthesis temperature of 800…”

Section: Resultsmentioning

confidence: 99%

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Relationship between the Properties and Cycle Life of Si/C Composites as Performance-Enhancing Additives to Graphite Electrodes for Li-Ion Batteries

Schott

Gómez-Cámer

Novák

et al. 2016

J. Electrochem. Soc.

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With its high theoretical specific charge, silicon is a promising candidate as electrode additive to enhance specific charge of graphite electrodes for high-energy-density Li-ion batteries. We prepared Si/C composites by a two-step procedure: the ballmilling of silicon nanoparticles with a carbon precursor for homogenization, followed by a carbonization step. The effects of the carbon source and the carbonization parameters on the physical and electrochemical composite properties were identified. Longer cycle life was reached for graphite electrodes containing Si/C composites than with silicon nanoparticles simply mixed with carbon black, and the extent of the improvement was dependent on the physical properties of Si/C composite. A carbon host with a larger pore volume -obtained using sucrose precursor, especially at lower heat-treatment temperatures, -enabled a more efficient buffering of the silicon volume changes. However, this did not define good cycling stability. The electrochemical performance was found, instead, being significantly affected by the contact between the silicon nanoparticles and the carbon matrix, and by the structure of the latter. The stacking and in-plane ordering of the graphitic domains in the amorphous carbon -tuned by the precursor nature and the heat-treatment temperature -were crucial for effectiveness of lithiation/delithiation processes. Graphite, due to its very negative reaction potential and its performance stability, is the most common negative electrode material in current lithium-ion batteries. However, limits of its theoretical specific charge (372 mAh g −1 ) have already been reached and, therefore, it is impossible to increase energy density of the battery any further using graphite alone. One promising candidate to replace graphite in negative electrodes is silicon, which has a high theoretical specific charge of 3575 mAh g −1 (forming Li 15 Si 4 ), and whose reactions occur in a potential window similar to graphite. In addition, silicon is abundant, cheap and environmentally friendly, and due to this has attracted a lot of attention in the last twenty years.1-5 However, silicon-containing electrodes suffer from strong performance fading due to significant volume changes of silicon particles during cycling. 2,3,6 These volume changes lead to cracking of the electrode and/or silicon particles, and to disconnection of silicon from the conductive network, which in turn leads to loss of utilizable active material. Moreover, the solid electrolyte interphase (SEI) is damaged after each cycle and grows continuously on the newly exposed surface of silicon, trapping available lithium ions and consuming electrolyte. 7-10Several approaches were suggested in the literature to overcome these challenges. It was demonstrated that electrolyte additives, such as FEC, can prolong the cycle life of silicon-containing electrodes by improving the quality of the SEI on silicon.10-13 The electrode integrity can also be longer maintained if the common PVDF binder is replaced by water-soluble ...

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

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Relationship between the Properties and Cycle Life of Si/C Composites as Performance-Enhancing Additives to Graphite Electrodes for Li-Ion Batteries

Schott

Gómez-Cámer

Novák

et al. 2016

J. Electrochem. Soc.

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“…Cai et al reported the sucrose-based template carbon materials and their hydrogen storage capacity (1.43 wt.%, 700 8C) [24]. However, generally most porous carbons prepared by direct carbonization have relatively low specific surface area and microporosity but Shcherban et al reported the porous carbon materials from direct carbonization of sucrose and their hydrogen storage capacity (1.48 wt.%, 900 8C) [25].…”

Section: Introductionmentioning

confidence: 98%

Preparation and characterization of sucrose-based microporous carbons for increasing hydrogen storage

Choi

Park

2015

Journal of Industrial and Engineering Chemistry

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“…The relation between specific surface area of the nanocarbons templated by zeolites and hydrogen adsorption amount has already been thoroughly investigated. [79,227,[241][242][243][244][245][246][247] Moreover, it has been revealed that H 2 uptake also depends on pore volume, specifically micropore volume. Xia et al systematically investigated the correlation between H 2 uptake and specific surface area as well as pore volume.…”

Section: Hydrogen Storagementioning

confidence: 99%

Revival of Zeolite‐Templated Nanocarbon Materials: Recent Advances in Energy Storage and Conversion

et al. 2020

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Nanocarbon materials represent one of the hottest topics in physics, chemistry, and materials science. Preparation of nanocarbon materials by zeolite templates has been developing for more than 20 years. In recent years, novel structures and properties of zeolite-templated nanocarbons have been evolving and new applications are emerging in the realm of energy storage and conversion. Here, recent progress of zeolite-templated nanocarbons in advanced synthetic techniques, emerging properties, and novel applications is summarized: i) thanks to the diversity of zeolites, the structures of the corresponding nanocarbons are multitudinous; ii) by various synthetic techniques, novel properties of zeolite-templated nanocarbons can be achieved, such as hierarchical porosity, heteroatom doping, and nanoparticle loading capacity; iii) the applications of zeolite-templated nanocarbons are also evolving from traditional gas/vapor adsorption to advanced energy storage techniques including Li-ion batteries, Li-S batteries, fuel cells, metal-O 2 batteries, etc. Finally, a perspective is provided to forecast the future development of zeolite-templated nanocarbon materials.

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Large surface area sucrose-based carbons via template-assisted routes: Preparation, microstructure, and hydrogen adsorption properties

Cited by 30 publications

References 47 publications

Relationship between the Properties and Cycle Life of Si/C Composites as Performance-Enhancing Additives to Graphite Electrodes for Li-Ion Batteries

Relationship between the Properties and Cycle Life of Si/C Composites as Performance-Enhancing Additives to Graphite Electrodes for Li-Ion Batteries

Preparation and characterization of sucrose-based microporous carbons for increasing hydrogen storage

Revival of Zeolite‐Templated Nanocarbon Materials: Recent Advances in Energy Storage and Conversion

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