Chitosan derived N-doped carbon coated SnO2 nanocomposite anodes for Na-ion batteries

Aydın, Meral; Demir, Emrah; Ünal, Burcu; Dursun, Bahtiyar; Ahsen, Ali Şems; Demir‐Cakan, Rezan

doi:10.1016/j.ssi.2019.115035

Cited by 17 publications

(14 citation statements)

References 55 publications

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“…The methyl and carbonyl composition are practically constant over time due to the thermal stability of the acetylated units. Therefore, the 13 C solid-state CP-MAS/NMR analysis shows that the hydrothermal treatment at longer periods potentializes the carbonization process toward a more aromatic structure, probably with furanic domains. , …”

Section: Results and Discussionmentioning

confidence: 96%

“…Hence, the bands at 3440 and 3372 cm –1 , related to NH stretching, can be better observed in the HTC materials. It is possible to identify the presence of aliphatic structures characterized by the bands of C–H stretching at 2930 and 2880 cm –1 . , Figure S3 shows an amplification of the region between 1200 and 1600 cm –1 to highlight the bands at 1323 cm –1 , which can be related to the C–N stretching in aromatic amines; it also amplifies the region between 1150 and 800 cm –1 to show the C–O stretching vibration at 1070 cm –1 , which may be characteristic of aromatic systems. , …”

Section: Results and Discussionmentioning

confidence: 99%

“…Recent studies have reported the use of chitosan hydrochars for the removal of pollutants ,− and the production of materials for energy storage. , Nevertheless, to the best of our knowledge, there is no reported study on the use of chitosan hydrochars for CO 2 capture. In this work, we report the effects of HTC time on chitosan’s chemical properties and its CO 2 capture potential.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

et al. 2020

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Chitosan, a heteropolysaccharide obtained from the N-deacetylation of chitin, has stood out as a raw material to produce CO2 adsorbents. In this work, we report the hydrothermal carbonization (HTC) of chitosan for different times and the potential of the materials for CO2 adsorption. Elemental analysis indicated that the carbon weight content increases, whereas the relative amount of oxygen atoms decreases upon increasing the time of HTC. The relative nitrogen content was almost constant, indicating that HTC did not lead to significant loss of nitrogenated compounds. FTIR and 13C MAS/NMR spectra suggest that the structure of the sorbents becomes more aromatic with the increase of HTC time. The thermal properties of HTC materials were similar to that of chitosan, whereas their basicity was less compared to that of the parent chitosan. SEM images did not show significant porosity, which was confirmed by the BET area of the materials, around 2 m2·g–1, similar to that of the parent chitosan. The materials were tested for CO2 capture at 25 °C and 1 bar; the HTC chitosan adsorbents showed CO2 uptakes about 4-fold higher than that of the parent chitosan. The adsorption process was better described by the Freundlich isotherm and the pseudo-second-order kinetic model.

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Section: Results and Discussionmentioning

confidence: 96%

Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

et al. 2020

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“…In addition, there is more than 7% nitrogen element in chitosan, which can make nitrogen dope in pyrolytic carbon after heat treatment. Nitrogen doping is an available method to enhance the conductivity of the material remarkably [6].…”

Section: Introductionmentioning

confidence: 99%

Nano-Si/graphite/N-doped biocarbon hybrid anode material for high-performance lithium-ion batteries

Wang

2022

J. Phys.: Conf. Ser.

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Improving the cycle life of silicon-based anodes is extremely important to the development of Li-ion batteries. Nano-silicon / graphite / Nitrogen-doped carbon composites are prepared as hybrid anode material in this work. The nano-silicon particles are distributed in the graphite framework, which improves the electrical conductivity of the composite. The amorphous nitrogen-doped carbon layer of the composite could be a buffer structure for the volume change of Si while providing a fast transport channel for lithium ions and further enhancing the electrical conductivity of the composites. The specific capacity of the composite electrode is 656.5 mAh g-1 at 500 mA g-1. The capacity retention rate is 91% after 100 cycles. The composite electrode could deliver a specific capacity of 497.3 mAh g-1 after 200 cycles even at a large current density of 1A g-1.

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“…SnO 2 farklı üstün özelliklerinden dolayı şarj edilebilir piller, gaz sensörleri, yakıt hücreleri ve güneş hücreleri gibi kritik uygulamalarda kullanım alanı bulmuştur [1][2][3][4]. Yüksek teorik spesifik kapasitesi (1494 mAhg -1 ) sebebiyle enerji depolama alanında Li-iyon piller, Na-iyon piller, Li-S pilleri gibi farklı uygulamalarda elektrot aktif malzemesi olarak kullanılır [5][6][7][8][9]. Ayrıca SnO 2 geniş bant aralığına sahip önemli bir n-tipi yarı iletkendir.…”

Section: Introductionunclassified

Maya Hücresini Biyoşablon Olarak Kullanarak Poroz SnO2 Sentezi ve Karakterizasyonu

Alaf

ÇAĞLAR

Leblebici

2021

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Bu çalışmada, poroz ve nanoyapılı SnO 2 , hidrotermal sentez yöntemiyle biyoşablon kullanılarak sentezlenmiştir. Biyoşablon olarak ekonomik ve kolay bulunan maya hücreleri seçilmiştir. Maya hücrelerinin 3-5 μm çapındaki küreler şeklinde olması üretilen SnO 2 yapısının porlu ve yüksek yüzey alanlı olmasını sağlamıştır. Maya hücrelerinin üzerine SnCl 2 .2H 2 O başlangıç malzemesi kullanılarak SnO 2 yapısının biriktirilmesi işleminden sonra kalsinasyon ile maya hücreleri uzaklaştırılmıştır. Üretilen SnO 2 'nin kristal yapısı, kristal boyutu, morfoloji ve yüzey alanı çalışmaları yapılmıştır. Böylelikle 20-25 nm kristal boyutuna sahip SnO 2 tozlar üretilmiştir. 110 m 2 /gBET yüzey alanona sahip ve yüksek poroziteli yapılan elde edilmiştir.

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Chitosan derived N-doped carbon coated SnO2 nanocomposite anodes for Na-ion batteries

Cited by 17 publications

References 55 publications

Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

Nano-Si/graphite/N-doped biocarbon hybrid anode material for high-performance lithium-ion batteries

Maya Hücresini Biyoşablon Olarak Kullanarak Poroz SnO2 Sentezi ve Karakterizasyonu

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Chitosan derived N-doped carbon coated SnO2 nanocomposite anodes for Na-ion batteries

Cited by 17 publications

References 55 publications

Synthesis, Characterization, and CO2 Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

Synthesis, Characterization, and CO2 Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

Nano-Si/graphite/N-doped biocarbon hybrid anode material for high-performance lithium-ion batteries

Maya Hücresini Biyoşablon Olarak Kullanarak Poroz SnO2 Sentezi ve Karakterizasyonu

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Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan

Synthesis, Characterization, and CO₂ Uptake of Adsorbents Prepared by Hydrothermal Carbonization of Chitosan