Mesoporous dominant cashewnut sheath derived bio-carbon anode for LIBs and SIBs

Nagalakshmi, M.; Kalaiselvi, N.

doi:10.1016/j.electacta.2019.02.123

Cited by 25 publications

(12 citation statements)

References 20 publications

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“…65-6212), while the peak around 44 • relates to the (100) crystal plane of sp 2 -hybridized carbon [35][36][37]. These results demonstrate that the as-prepared HPC possess a graphitic structure [38][39][40]. Figure 2b presents Raman spectroscopy of the HPC material.…”

Section: Electrochemical Measurementsmentioning

confidence: 79%

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

et al. 2020

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As lithium-ion battery (LIB) anode materials, porous carbons with high specific surface area are highly required because they can well accommodate huge volume expansion/contraction during cycling. In this work, hierarchically porous carbon (HPC) with high specific surface area (~1714.83 m2 g−1) is synthesized from biomass reed flowers. The material presents good cycling stability as an LIB anode, delivering an excellent reversible capacity of 581.2 mAh g−1 after cycling for 100 cycles at a current density of 100 mA g−1, and still remains a reversible capacity of 298.5 mAh g−1 after cycling for 1000 cycles even at 1000 mA g−1. The good electrochemical performance can be ascribed to the high specific surface area of the HPC network, which provides rich and fast paths for electron and ion transfer and provides large contact area and mutual interactions between the electrolyte and active materials. The work proposes a new route for the preparation of low cost carbon-based anodes and may promote the development of other porous carbon materials derived from various biomass carbon sources.

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Section: Electrochemical Measurementsmentioning

confidence: 79%

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

et al. 2020

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“…Here, it is worth noting that the intensity ratio of D to G (i.e., I D /I G ) is ~0.93. Since the magnitude of I D /I G depicts a degree of graphitization in carbonaceous materials [33], one can conjecture that the biomass GTA-derived IMP-GC nanoflakes are highly graphitized. The total mass loss of the air-assisted green-tea powders (Figure S1, Supplementary Materials) is around 24.2%, demonstrating the high thermal stability of the materials [34].…”

Section: Resultsmentioning

confidence: 99%

Substantial LIB Anode Performance of Graphitic Carbon Nanoflakes Derived from Biomass Green-Tea Waste

Lee

Kim

2019

Nanomaterials

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Biomass-derived carbonaceous constituents constitute fascinating green technology for electrochemical energy-storage devices. In light of this, interconnected mesoporous graphitic carbon nanoflakes were synthesized by utilizing waste green-tea powders through the sequential steps of air-assisted carbonization, followed by potassium hydroxide activation and water treatment. Green-tea waste-derived graphitic carbon displays an interconnected network of aggregated mesoporous nanoflakes. When using the mesoporous graphitic carbon nanoflakes as an anode material for the lithium-ion battery, an initial capacity of ~706 mAh/g and a reversible discharge capacity of ~400 mAh/g are achieved. Furthermore, the device sustains a large coulombic efficiency up to 96% during 100 operation cycles under the applied current density of 0.1 A/g. These findings depict that the bio-generated mesoporous graphitic carbon nanoflakes could be effectively utilized as a high-quality anode material in lithium-ion battery devices.

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“…Cashewnut sheath-derived biocarbon (CNS) has been synthesized as per our previous work. 27 Briefly, cashewnut sheaths were washed with deionized water followed with ethanol several times and dried. Further, precarbonization was carried out at 350 °C for 2 h and activated with KOH in the weight ratio of 1:2 in an argon atmosphere.…”

Section: Methodsmentioning

confidence: 99%

In-situ Formed Polar Fe₂N/MCMB Hybrid Interlayer for High-Rate Li–S Batteries

Muralidharan

Kalaiselvi

2021

Energy Fuels

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Owing to its high theoretical capacity (1675 mA h g −1 ) and high theoretical energy density (2600 W h kg −1 ), lithium−sulfur (Li−S) batteries receive intense attention as an alternate to current lithium-ion batteries (LIBs). Sulfur, a surplus byproduct from petroleum industry along with an earth-abundant nature, ensures the low-cost production of Li−S batteries compared to LIBs. However, the common technical hurdles associated with sulfur such as low conductivity and poor cyclability due to the polysulfide shuttling effect hinder the realistic applications. In the current work, cashewnut sheath-derived biocarbon (CNS) is utilized as a host material for sulfur cathodes, in order to enhance the conductivity and to realize better electrochemical performance, especially at low current rates. For instance, a 50 wt % sulfur-loaded CNS cathode (CNS50S) shows a high specific capacity of 680 mA h g −1 at C/10 rate even after 700 cycles with a gravimetric energy density of 415 W h kg −1 . When the in situ formed polar Fe 2 N/MCMB was introduced as an interlayer, excellent electrochemical performance is obtained for CNS@SS cathodes even at high rates due to the effective mitigation of lithium polysulfide dissolution and efficient reutilization of absorbed polysulfides on the interlayer surface. For example, CNS50SIL and CNS60SIL cathodes deliver a specific capacity of 343 and 518 mA h g −1 at a high rate of 1C even after 120 cycles, respectively. This study offers ample scope to exploit CNS@SS composite cathodes for real-time applications and throws light on the importance of custom-designed Fe-based polar interlayers in improving the electrochemical behavior of Li−S batteries in terms of capacity at high rates.

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Mesoporous dominant cashewnut sheath derived bio-carbon anode for LIBs and SIBs

Cited by 25 publications

References 20 publications

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

Substantial LIB Anode Performance of Graphitic Carbon Nanoflakes Derived from Biomass Green-Tea Waste

In-situ Formed Polar Fe₂N/MCMB Hybrid Interlayer for High-Rate Li–S Batteries

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Mesoporous dominant cashewnut sheath derived bio-carbon anode for LIBs and SIBs

Cited by 25 publications

References 20 publications

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

Substantial LIB Anode Performance of Graphitic Carbon Nanoflakes Derived from Biomass Green-Tea Waste

In-situ Formed Polar Fe2N/MCMB Hybrid Interlayer for High-Rate Li–S Batteries

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Resources

About

In-situ Formed Polar Fe₂N/MCMB Hybrid Interlayer for High-Rate Li–S Batteries