Formation of carbonaceous gel

Tateishi, D.; Esumi, Kunio; Honda, Hidemasa

doi:10.1016/0008-6223(91)90052-k

Cited by 36 publications

(7 citation statements)

References 8 publications

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“…However, asphalt mainly consists of aromatic molecules, which makes it less reactive and difficult to adjust the structure during the process of preparing carbon materials. Amphiphilic carbonaceous material (ACM), the product of asphalt after mixed acid oxidation, is rich in hydrophilic groups, such as carboxyl, hydroxyl, and nitryl, leading it to disperse evenly in both alkaline aqueous solution and some polarity organic solutions, − so as to synthesize nano-SnO 2 /C composites under mild conditions and a simple process. In addition, it has been confirmed that these functional groups could increase charge storge for the carbon material itself …”

Section: Introductionmentioning

confidence: 99%

Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Liu

Wang

2021

Energy Fuels

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Because of the superiority in high theoretical capacity and environmental friendliness, SnO 2 as an ideal anode material exhibits an application prospect in sodium-ion batteries. Nevertheless, its practical use is restricted by the poor electroconductivity and huge volume expansion. To solve these difficulties, a maneuverable and effective strategy is introduced to synthesis SnO 2 /C composites in this work. For the operation, the composites are prepared via a one-pot hydrothermal technique. For the effect, SnO 2 particles disperse uniformly on the pitchderived carbon matrix in nanometer size. The impacts of the pyrolysis temperature and SnO 2 content are investigated in detail. It is surprising that the diameter of the SnO 2 particle is ∼5 nm observed by high-resolution transmission electron microscopy, and the Sn−O−C bond exists, confirmed by X-ray photoelectron spectroscopy. In comparison to the carbonaceous substrate and pure SnO 2 , the composite shows higher storage capacity and greater cycle performance that SnO 2 /C-2 delivers a charge specific capacity of 311.8 mAh g −1 at 100 mA g −1 initially and a residual capacity of 144.2 mAh g −1 after 1000 cycles at 500 mA g −1 . The remarkable electrochemical performance benefits from the nanosized SnO 2 particles with high dispersion as well as the tight link between SnO 2 and the carbon matrix.

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Section: Introductionmentioning

confidence: 99%

Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Liu

Wang

2021

Energy Fuels

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“…It has been earlier proved by XRD and FTIR results that nitrosulfuric acid treatment broke the links between adjacent graphitic microcrystallines in cokes and brought in many oxygen-containing functional groups [18,20]. The resultant ACM showed widened d 002 , and could be dissolved in alkaline aqueous solutions [17][18][19][20].…”

Section: Xps Analysis Of Acmmentioning

confidence: 92%

“…The resultant ACM showed widened d 002 , and could be dissolved in alkaline aqueous solutions [17][18][19][20]. Moreover, to study the activation mechanism of ACM, elemental composition and chemical bonds information are extremely important.…”

Section: Xps Analysis Of Acmmentioning

confidence: 99%

Preparation of mesoporous carbons from amphiphilic carbonaceous material for high-performance electric double-layer capacitors

Wang

Chen

Wang

et al. 2011

Journal of Power Sources

100

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“…Moreover, we chose amphiphilic carbonaceous material (ACM, [35]) as a carbon precursor. ACM with many hydrophilic groups could easily disperse in water or ethanol.…”

Section: Introductionmentioning

confidence: 99%

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

Yan

Wang

et al. 2015

J Solid State Electrochem

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The LiMn 0.5 Fe 0.5 PO 4 /C nanocrystallites with a uniform size (∼50 nm) are successfully prepared by employing a facile solvothermal method at 180°C. Amphiphilic carbonaceous material (ACM) is chosen as the carbon precursor and forms a homogeneous carbon layer covering the LiMn 0.5 Fe 0.5 PO 4 particles. The asprepared LiMn 0. 5 Fe 0. 5 PO 4 /C sample, with a high Brunauer-Emmett-Teller (BET) surface area of 69.3 m 2 g −1 , is used as the cathode material for lithiumion batteries (LIBs) and delivers a reversible capacity of 158 mAh g −1 at 0.05 C. It shows remarkable rate capability with discharge capacities of 130 mAh g −1 at 1 C, 105 mAh g − 1 at 10 C and 99 mAh g − 1 at 30 C. Meanwhile, the material maintains 121 mAh g −1 at 1 C after 150 cycles with 93 % capacity retention. The kinetic behaviors of LiMn 0.5 Fe 0.5 PO 4 /C sample are investigated by high throughout cyclic voltammetry. The small particle size, partial Fe substitution, and homogeneous carbon coating make a synergetic effect on enhancing the sample's electrochemical properties.

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Formation of carbonaceous gel

Cited by 36 publications

References 8 publications

Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Preparation of mesoporous carbons from amphiphilic carbonaceous material for high-performance electric double-layer capacitors

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

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Formation of carbonaceous gel

Cited by 36 publications

References 8 publications

Uniform Nano-SnO2/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Uniform Nano-SnO2/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Preparation of mesoporous carbons from amphiphilic carbonaceous material for high-performance electric double-layer capacitors

Enhanced kinetic behaviors of LiMn0.5Fe0.5PO4/C cathode material by Fe substitution and carbon coating

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Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries

Uniform Nano-SnO₂/C Composite Anodes from Coal Tar Pitch for Sodium-Ion Batteries