A novel strategy for the synthesis of hard carbon spheres encapsulated with graphene networks as a low-cost and large-scalable anode material for fast sodium storage with an ultralong cycle life

Yasin, Ghulam; Arif, Muhammad; Mehtab, Tahira; Shakeel, Muhammad; Mushtaq, Muhammad; Kumar, Anuj; Nguyen, Tuan Anh; Slimani, Y.; Nazir, M. Tariq; Song, Huaihe

doi:10.1039/c9qi01105f

Cited by 135 publications

(27 citation statements)

References 62 publications

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“…Apparently, the NSPC-1000 sample showed a smaller diameter of the semicircle than the PC-1000 sample, suggesting excellent electrical conductivity and a much lower charge-transfer resistance for the NSPC-1000 electrode. 65 Compared to the PC-1000 sample, the NSPC-1000 electrode showed a larger Warburg slope, suggesting faster lithium-ion diffusion into the heteroatom-doped porous carbon material. Thus, these results indicate that the heteroatom-doping and the porous structures with a unique morphology can significantly accelerate the lithium-ion and electron transports.…”

Section: Resultsmentioning

confidence: 91%

Self-templating synthesis of heteroatom-doped large-scalable carbon anodes for high-performance lithium-ion batteries

Yasin

Arif

et al. 2022

Inorg. Chem. Front.

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Section: Resultsmentioning

confidence: 91%

Self-templating synthesis of heteroatom-doped large-scalable carbon anodes for high-performance lithium-ion batteries

Yasin

Arif

et al. 2022

Inorg. Chem. Front.

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“…In general, the relationship between the electrochemical process and carbon materials was estimated using the I D / I G ratio . Owing to the abnormal increase of the I D / I G ratio as the pyrolysis temperature increases for some nitrogen-doped carbon materials, the I D / I G ratio may not be accurate to evaluate the textures of carbon. − Herein, we plot the curves of capacity retention versus the I D / I G ratio. Unfortunately, both the cyclic capacity retention (Figure e, Figure S18c, d) and the rate capacity retention (Figure f) deliver a weak correlation to the I D / I G ratio.…”

Section: Resultsmentioning

confidence: 99%

High-Voltage and Ultrastable Aqueous Zinc–Iodine Battery Enabled by N-Doped Carbon Materials: Revealing the Contributions of Nitrogen Configurations

Kumar

Nguyen

et al. 2020

ACS Sustainable Chem. Eng.

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The rechargeable aqueous zinc–iodine (Zn–I2) battery has emerged as a promising electrochemical energy storage technology. However, poor cycling stability caused by the dissolution of iodine species into the electrolyte limited its practical application. Herein, we report a nitrogen-doped porous carbon (NPC) material in gram scales. Performed as an iodine host in the Zn–I2 battery, the NPC shows a high specific capacity (345.3 mAh g–1 at 0.2 C), superior rate capability (53.2% capacity retention at 10 C), and remarkable cycling stability (10 000 cycles at 10 C with a capacity retention of 80.9%). More importantly, DFT computations reveal that the graphitic-N (N-Q) exhibits the strongest adsorption of iodine; however, pyridinic-N (N-6) shows the weakest adsorption of iodine. Moreover, the N-6/N-Q ratio is an essential parameter that significantly determined the electrochemical performance of Zn–I2 batteries. Therefore, the improved long-term cycling stability and rate capability of the as-designed Zn–I2 battery are attributable to the decrease of the N-6/N-Q ratio. This work is of great significance for devolving highly reversible Zn–I2 batteries.

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“…Two peaks at ∼1345 and ∼1585 cm –1 were attributed to the typical characteristic D peak (amorphous carbon structure) and G peak (sp 2 hybridized carbon atoms in graphite) . Further, the intensity ratio of the D peak to the G peak ( I D / I G ) enabled investigation of the graphitization of carbon material . In this case, the I D / I G values of CWB-600, CWB-800, and CWB-1000 were computed as 1.20, 0.93, and 0.68, respectively (Table ).…”

Section: Resultsmentioning

confidence: 99%

Wheat Bran Derived Carbon toward Cost-Efficient and High Performance Lithium Storage

Wang

Zhang

Song

et al. 2020

ACS Sustainable Chem. Eng.

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Graphite is the mainstream anode material of commercial lithium-ion batteries, while its low theoretical capacity and short supply limit its application in the ever-increasing demand for high-capacity batteries. For carbonaceous anode materials, the small surface area can endow relatively high initial Coulombic efficiency, and large mechanical strength can endow good stability during long-term cycling. In this study, sustainable wheat bran was utilized to prepare cost-efficient carbon anode via carbonization. At the reaction temperature of 800 °C, the carbonized wheat bran displayed an optimal mixed phase of ordered graphite (provided high conductivity) and amorphous carbon (provided more active sites). Due to a distinctive honeycomb-shaped hexagon structure and a small surface area of 57 m2 g–1, the as-prepared carbon material could achieve initial Coulombic efficiency up to 85%. Such an anode material revealed a superior reversible capacity of 515 mAh g–1 and corresponding retention of 92% after 1000 charge/discharge cycles. Using LiNi0.5Co0.2Mn0.3O2 as the cathode, the full cell delivered a large areal capacity of 2.66 mAh cm–2 over 200 cycles, with a high cycling stability of 82%. With such high Coulombic efficiency, areal capacity, and capacity retention, the carbonized wheat bran is on par with state-of-the-art carbonaceous anode material. This work develops a scalable and effective strategy to synthesize high-performance and low-cost carbon anode.

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A novel strategy for the synthesis of hard carbon spheres encapsulated with graphene networks as a low-cost and large-scalable anode material for fast sodium storage with an ultralong cycle life

Abstract: We designed a cost-effective and novel strategy for the construction of hard carbon spheres enveloped with graphene networks as a high performance anode material for sodium-ion batteries.

Cited by 135 publications

References 62 publications

Self-templating synthesis of heteroatom-doped large-scalable carbon anodes for high-performance lithium-ion batteries

Self-templating synthesis of heteroatom-doped large-scalable carbon anodes for high-performance lithium-ion batteries

High-Voltage and Ultrastable Aqueous Zinc–Iodine Battery Enabled by N-Doped Carbon Materials: Revealing the Contributions of Nitrogen Configurations

Wheat Bran Derived Carbon toward Cost-Efficient and High Performance Lithium Storage

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