Macroporous carbon from human hair: A journey towards the fabrication of high energy Li-ion capacitors

Satish, Rohit; Aravindan, Vanchiappan; Wong, Chui Ling; Ng, Kee Woei; Srinivasan, Madhavi

doi:10.1016/j.electacta.2015.09.127

Cited by 50 publications

(22 citation statements)

References 44 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The O 1s spectrum can be fitted into four peaks, assignable to oxygen atoms in C=O (531.1 eV), C‐OH and C−O‐C (532.2 eV), COO − (533.2 eV), and N−O (534.2 eV) bonds, respectively ,. For the N 1s spectrum, it can also be deconvoluted into four peaks, corresponding to pyridinic (398.2 eV), pyrrolic and/or pyridone (400.1 eV), quaternary (401.1 eV), and oxidized nitrogen (403.3 eV), respectively ,. In addition, the deconvolution of the P 2p peak shows two peaks representing P−C (132.4 eV) and P−O (134.2 eV), respectively ,.…”

Section: Resultsmentioning

confidence: 99%

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

et al. 2018

View full text Add to dashboard Cite

In this paper, a simple yet effective chemical activation/carbonization strategy is presented to prepare a hierarchically porous activated carbon with multi-heteroatom (O, N, and P) selfdoping using waste soybean pods as carbon source. It is found that the resulting carbon activated by KOH possesses richer textural properties than the one activated by ZnCl 2 . With abundant micro-, mesopores and interconnected macropores, the KOH-activating carbon possesses a specific surface area up to 2245 m 2 g À1 and a large pore volume of 1.35 cm 3 g À1 . In a three-electrode system, the KOH-activating carbon can deliver a high specific capacitance of 321.1 F g À1 at a current density of 1 A g À1 in 6 M KOH aqueous electrolyte. It still can maintain 215.7 F g À1 at a current density of 10 A g À1 with a good rate capacity (67.2% retention). When used as symmetric electrode in 1 M Na 2 SO 4 neutral aqueous solution, the SPACÀK//SPACÀK supercapacitor can provide a high energy density up to 22.28 Wh kg À1 at a power density of 450 W kg À1 in a wide voltage window of 0-2.0 V, surpassing most of the previously reported waste biomass-based carbon materials. The impressive electrochemical performances as well as the low-cost scalable production manifest that the SPACÀK derived from waste soybean pods can be a promising electrode candidate for supercapacitor application.[a] Dr.

show abstract

Section: Resultsmentioning

confidence: 99%

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

et al. 2018

View full text Add to dashboard Cite

show abstract

“…We are conducting studies in parallel to understand the precisely the response of each of the electrodes during cycling, so that the energy density can further be improved. In addition to the further improvements in insertion type electrode, we are also evaluating the possibility of replacing the commercially obtained AC with homemade one, since in the present case, energy density of the cell is highly limited by the supercapacitor component …”

Section: Resultsmentioning

confidence: 99%

LiVPO₄F: A New Cathode for High-Energy Lithium Ion Capacitors

et al. 2016

Self Cite

View full text Add to dashboard Cite

We report, for the first time, the possibility of using tavorite type LiVPO4F as insertion electrode for Li‐ion capacitor configuration with carbonaceous counterpart i. e. activated carbon (AC) in organic medium. Carbothermal reduction process is successfully employed to prepare LiVPO4F and the as‐prepared material is subsequently characterized using various analytical techniques. Single electrode studies are conducted to estimate the optimum mass loading between two electrodes. A reversible capacity of 120 mAh g–1 is obtained when cycled between 3–4.5 V vs. Li at current density of 50 mA g–1. This has been further studied as cathode in a Li‐ion capacitor configuration with AC. The LiVPO4F/AC configuration delivered the maximum energy density of 30 Wh kg–1. A good cycleability is also evidenced, for instance, ∼90 % of the initial value is retained after 1000 cycles.

show abstract

“… Comparison of various biomass‐derived active materials in LIC assemblies. a) Biomass‐derived AC materials with an insertion‐type Li 4 Ti 5 O 12 anode in LICs: CS‐ZP, CZ‐HTP, and CS‐ZHTP, DNL‐AC, SP‐AC, TW‐AC‐HBP, KV‐AC, HH‐AC, and RH‐AC . b) LICs based on biomass‐derived AC, HC, and composites: CS‐ZP/TiNb 2 O 7 , KV‐AC/LiC 6 , TW‐AC‐HBP, SF‐AC/MCMB, O‐AC/O‐HC, SB‐AC/SB‐AC, CC‐AC/Si‐C, EW‐AC/Si‐C, EW‐NaCl/Fe 3 O 4 @C, and HBF‐AC/MnO‐HBF‐AC …”

Section: Egg Whitementioning

confidence: 99%

“…Satish et al. reported the possibility of using human‐hair‐derived high‐surface‐area AC (HH‐AC) as a promising electrode for LICs . The use of HH as an AC source is highly beneficial, owing to the presence of keratin (protein), which is inbuilt in the long chains of amino acids that are broken down in the carbonization process to produce residual nitrogen species.…”

Section: Human Hairmentioning

confidence: 99%

“…Satish et al reported the possibility of using human-hair-derived high-surface-area AC (HH-AC) as ap romising electrode for LICs. [99] The use of HH as an AC source is highly beneficial, owing to the presence of keratin (protein), whichi si nbuilti n the long chains of amino acids that are broken down in the carbonization process to produce residual nitrogen species. Consequently,t he resultant carbon material couldc ontain doped nitrogen species, which would increase the carbonc onductivity by acting as an electron donor.F urthermore, it is well-known that N-doping can effectively improvet he conductivity of the carbonm aterial.…”

Section: Human Hairmentioning

confidence: 99%

See 1 more Smart Citation

Biomass‐Derived Carbon Materials as Prospective Electrodes for High‐Energy Lithium‐ and Sodium‐Ion Capacitors

Natarajan

Lee

Aravindan

2019

Chemistry An Asian Journal

Self Cite

View full text Add to dashboard Cite

Biomass‐derived carbon materials have received special attention as efficient, low‐cost, active materials for charge‐storage devices, regardless of the power system, such as supercapacitors and rechargeable batteries. In this Minireview, we discuss the influence of biomass‐derived carbonaceous materials as positive or negative electrodes (or both) in high‐energy hybrid lithium‐ion configurations with an organic electrolyte. In such hybrid configurations, the electrochemical activity is completely different to conventional electrical double‐layer capacitors; that is, one of the electrodes undergoes a Faradaic reaction, whilst the counter electrode undergoes a non‐Faradaic reaction, to achieve high energy density. The use of a variety of biomass precursors with different properties, such as surface functionality, the presence of inherent heteroatoms, tailored meso‐/microporosity, high specific surface area, various degrees of crystallization, calcination temperature, and atmosphere, are described in detail. Sodium‐ion capacitors are also discussed, because they are an important alternative to lithium‐ion capacitors, owing to the low abundance and high cost of lithium. The electrochemical performance of carbonaceous electrodes in supercapacitors and rechargeable batteries are not discussed.

show abstract

Macroporous carbon from human hair: A journey towards the fabrication of high energy Li-ion capacitors

Cited by 50 publications

References 44 publications

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

LiVPO₄F: A New Cathode for High-Energy Lithium Ion Capacitors

Biomass‐Derived Carbon Materials as Prospective Electrodes for High‐Energy Lithium‐ and Sodium‐Ion Capacitors

Contact Info

Product

Resources

About

Macroporous carbon from human hair: A journey towards the fabrication of high energy Li-ion capacitors

Cited by 50 publications

References 44 publications

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

Waste Biomass Based‐Activated Carbons Derived from Soybean Pods as Electrode Materials for High‐Performance Supercapacitors

LiVPO4F: A New Cathode for High-Energy Lithium Ion Capacitors

Biomass‐Derived Carbon Materials as Prospective Electrodes for High‐Energy Lithium‐ and Sodium‐Ion Capacitors

Contact Info

Product

Resources

About

LiVPO₄F: A New Cathode for High-Energy Lithium Ion Capacitors