Functional‐Group Modification of Kraft Lignin for Enhanced Supercapacitors

Zhou, Bingjie; Li, Jing; Liu, Wei; Jiang, Hanmei; Li, Shaobo; Tan, Luxi; Dong, Lichun; She, Lan; Wei, Zidong

doi:10.1002/cssc.201903435

Cited by 33 publications

(24 citation statements)

References 38 publications

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“…Meanwhile, the typical hierarchical porous structure of naturally raw biomass can be inherited by derived materials [234,240,241], endowing the new materials a large surface area and porous structure which are vitally beneficial to achieve active electrode reactions and efficient ionic transfer. Moreover, with heteroatoms such as O [242][243][244][245] and N [246][247][248][249][250][251][252][253] of particular electrochemical functions doped in the carbon framework, the derived materials are capable of exhibiting outstanding performances.…”

Section: Lignocellulosic Biomass As Sustainable Materials For Energy mentioning

confidence: 99%

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Lignocellulosic biomass as sustainable feedstock and materials for power generation and energy storage

Wang

Ouyang

Zhou

et al. 2021

Journal of Energy Chemistry

285

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Section: Lignocellulosic Biomass As Sustainable Materials For Energy mentioning

confidence: 99%

“…capacitance material [242,245] considering the hydroquinone/quinone redox cycles. Therefore, a lignin-based substrate could benefit the electrochemical performance of SCs.…”

Section: 122mentioning

confidence: 99%

Lignocellulosic biomass as sustainable feedstock and materials for power generation and energy storage

Wang

Ouyang

Zhou

et al. 2021

Journal of Energy Chemistry

285

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“…Although several papers describe the redox-active properties of lignin, only a few examples have appeared regarding the use of lignin-based, self-supported electrodes in flexible devices ( Figure 4 ) [ 34 , 35 ]. Using lignosulfonate-functionalized graphene hydrogels (LS-GHs; LS mass ratio: ca.…”

Section: Fundamentals Of Ligninmentioning

confidence: 99%

Lignin-Derived Quinone Redox Moieties for Bio-Based Supercapacitors

et al. 2022

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Because of their rapid charging and discharging, high power densities, and excellent cycling life stabilities, supercapacitors have great potential for use in electric vehicles, portable electronics, and for grid frequency modulation. The growing need for supercapacitors that are both efficient and ecologically friendly has generated curiosity in developing sustainable biomass-based electrode materials and electrolytes. Lignin, an aromatic polymer with remarkable electroactive redox characteristics and a large number of active functional groups, is one such candidate for use in renewable supercapacitors. Because its chemical structure features an abundance of quinone groups, lignin undergoes various surface redox processes, storing and releasing both electrons and protons. Accordingly, lignin and its derivatives have been tested as electroactive materials in supercapacitors. This review discusses recent examples of supercapacitors incorporating electrode materials and electrolytes derived from lignin, focusing on the pseudocapacitance provided by the quinone moieties, with the goal of encouraging the use of lignin as a raw material for high-value applications. Employing lignin and its derivatives as active materials in supercapacitor electrodes and as a redox additive in electrolytes has the potential to minimize environmental pollution and energy scarcity while also providing economic benefits.

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“…With corresponding conversion procedures, LCFÀOH could be modified to form additional hydroquinones, which could potentially add to AC/LCF electrodes' pseudocapacitance. [21]…”

Section: Materials Characterizationmentioning

confidence: 99%

Durable Activated Carbon Electrodes with a Green Binder

R.K.

Haque

Vyas

et al. 2022

Physica Status Solidi (b)

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Herein, the fabrication and electrochemical performance of thick (180−280 μm) activated carbon (AC) electrodes with carbonized lignin‐derived carbon fiber (LCF) inclusions are reported. Efforts are taken in fabricating robust free‐standing electrodes from an environmentally friendly binder, microfibrillated cellulose (MFC), considering the biologically hazardous nature of other commonly used binders like polytetrafluoroethylene (PTFE), n‐methyl‐2‐pyrrolidone (NMP), and polyvinylidene fluoride (PVDF). Generally, electrodes composed of MFC binder are prone to cracking upon drying, especially with higher mass loadings, which leads to nonflexibility and poor device stability. The LCF inclusions into the AC electrode with MFC binders not only increase flexibility but also contribute to better conductivity in the electrodes. The LCFs act as an intermediate layer among AC particles and serve as conductive pathways, facilitating exposure of more active surfaces to the electrolyte. A thick electrode with high mass loading of 10 mg cm−2 is achieved. The results show that by incorporating 2 wt% LCF to the AC material, the best device with 5 mg cm−2 delivers a specific capacitance of 97 F g−1, while the specific capacitance of the reference AC device without LCF is 85 F g−1.

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Functional‐Group Modification of Kraft Lignin for Enhanced Supercapacitors

Abstract: Scheme1.a) Redoxreaction triggered by hydroquinone/quinone moieties. b) Evolution of the functional groupsi nKLu pon oxidation treatment.[a] Dr.

Cited by 33 publications

References 38 publications

Lignocellulosic biomass as sustainable feedstock and materials for power generation and energy storage

Lignocellulosic biomass as sustainable feedstock and materials for power generation and energy storage

Lignin-Derived Quinone Redox Moieties for Bio-Based Supercapacitors

Durable Activated Carbon Electrodes with a Green Binder

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