Bio-derived hard carbon nanosheets with high rate sodium-ion storage characteristics

Asfaw, Habtom Desta; Gond, Ritambhara; Kotronia, Antonia; Tai, Cheuk‐Wai; Younesi, Reza

doi:10.1016/j.susmat.2022.e00407

Cited by 22 publications

(21 citation statements)

References 53 publications

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“…The surface area, defectiveness, and surface oxygen content are the lowest in the monolithic HC, which leads to the lowest ICE at a low-voltage plateau as well as in the sloping region (Table ). The superior electrochemical characteristics of monolithic carbons due to a low specific surface area and a low concentration of defects have been pointed out in the literature. ,, For example, Hasegawa et al reported the ICE beyond 90% for monolithic HCs produced from macroporous resorcinol–formaldehyde (RF) gels . Here, we demonstrate that monolithic HC with outstanding electrochemical performance can be derived from an abundant resource such as glucose.…”

Section: Resultssupporting

confidence: 59%

Caramelization as a Key Stage for the Preparation of Monolithic Hard Carbon with Advanced Performance in Sodium-Ion Batteries

Bobyleva

Drozhzhin

Alekseeva

et al. 2022

ACS Appl. Energy Mater.

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Sodium-ion batteries (SIBs) have found broad applications due to the lower cost of stored energy per kilowatt-hour and the availability of raw materials for the production of these batteries. Nongraphitizable carbons, or hard carbons (HCs), appear to be the material of choice for negative electrodes (anodes) in SIBs. Saccharides, particularly glucose, are among the most used precursors to produce HCs. This work comprehensively explores a pretreatment step known as caramelization which precedes high-temperature pyrolysis. We synthesized monolithic HC with an ultralow specific surface area, demonstrating the initial Coulombic efficiency of 89% with a capacity of 300 mA h g–1 in a sodium half-cell. A strong correlation is revealed between the chemical composition of the intermediates and the microstructure of the HC anode materials as the final product. The pretreatment step conditions are shown to influence the properties of the HC (defectiveness, surface functionalities, and type of microporosity) and its electrochemical performance. The obtained data are important for upscaling the synthesis of HC anode materials with reproducible electrochemical characteristics.

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Section: Resultssupporting

confidence: 59%

Caramelization as a Key Stage for the Preparation of Monolithic Hard Carbon with Advanced Performance in Sodium-Ion Batteries

Bobyleva

Drozhzhin

Alekseeva

et al. 2022

ACS Appl. Energy Mater.

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“…This study has provided beneficial guidance for optimized HC anode via regulating carbonization temperature, thereby the optimum treatment temperature selected ranging from 1000 to 1600 °C for most HCs preparation process. [61,62] Under this guidance, cellulose was used as carbon resource by Qiu et al through a simple one-step method to achieve a series of HCs with controlled architectures and used as anode for LIBs/SIBs. It is clearly that while the carbonization temperature raised from 900 to 1500 °C, the Na storage abilities of the HCs also conform to a volcano-curve mode, while HC-1300 achieved the highest ICE ≈63.4% (Figure 4f-i).…”

Section: Control the Degree Of Graphitizationmentioning

confidence: 99%

Boosting the Development of Hard Carbon for Sodium‐Ion Batteries: Strategies to Optimize the Initial Coulombic Efficiency

Yang,

Wu,

et al. 2023

Adv Funct Materials

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Given the merits of affordable cost, superior low‐temperature performance, and advanced safe properties, sodium‐ion batteries (SIBs) have exhibited great development potential in large scale energy storage applications. Among various emerging carbonaceous anode materials applied for SIBs, hard carbon (HC) has recently gained significant attention regarding their relatively low cost, wide availability, and optimal overall performance. However, the insufficient initial Coulombic efficiency (ICE) of HC is the main bottlenecks, which is inevitably hindering their further commercial applications. Herein, an in‐depth holistic exposition about the reasons causing the unsatisfied ICE and the recent advances on effective improvement strategies are comprehensively summarized in this review, which have been divided into two aspects including the intrinsic property (degree of graphitization, pore structure, defect, et al.) and the extrinsic factor (electrolyte, electrode materials, et al.). In addition, future prospects and perspectives on HC to enable practical application in SIBs are also briefly outlined.

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“…5g and h). 83 In fact, in the one-step carbonization method, it is difficult to control the pore size and uniformity of the pore wall structure in the material, which can lead to a decrease in the specic surface area used for ion adsorption and embedding, affecting the transport of sodium ions, causing mechanical instability, and affecting cycling performance. At present, a two-step carbonization method is considered to be necessary.…”

Section: Regulation Of the Graphitization Degreementioning

confidence: 99%

Advances in the structural engineering and commercialization processes of hard carbon for sodium-ion batteries

Yang,

Zhao,

Dong

et al. 2024

J. Mater. Chem. A

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Bio-derived hard carbon nanosheets with high rate sodium-ion storage characteristics

Cited by 22 publications

References 53 publications

Caramelization as a Key Stage for the Preparation of Monolithic Hard Carbon with Advanced Performance in Sodium-Ion Batteries

Caramelization as a Key Stage for the Preparation of Monolithic Hard Carbon with Advanced Performance in Sodium-Ion Batteries

Boosting the Development of Hard Carbon for Sodium‐Ion Batteries: Strategies to Optimize the Initial Coulombic Efficiency

Advances in the structural engineering and commercialization processes of hard carbon for sodium-ion batteries

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