A novel approach for preparing in-situ nitrogen doped carbon via pyrolysis of bean pulp for supercapacitors

Ding, Yan; Li, Yunchao; Dai, Yujie; Han, Xinhong; Xing, Bo; Zhu, Lingjun; Qiu, Kunzan; Wang, Shurong

doi:10.1016/j.energy.2020.119227

Cited by 121 publications

(37 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This kind of meaningful structure is helpful to accelerate the migration speed of electrolyte ions. 13 The properties of pore structure on S−X samples are listed in Table 1. The N 2 adsorption−desorption isotherms and the porosity distribution are shown in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Co-doped Hierarchical Porous Biochar Derived from the Pyrolysis of Mantis Shrimp Shell for Supercapacitor Electrodes

Huang

Ding

et al. 2021

Energy Fuels

Self Cite

View full text Add to dashboard Cite

The preparation of high-value biochar as a supercapacitor is a promising way for biomass utilization. In this work, a self-activation method was proposed to prepare nitrogen and sulfur co-doping hierarchical porous biochar by using mantis shrimp shell as carbon, nitrogen, and sulfur precursors. The porosity and surface chemical properties of biochar were adjusted upon different temperatures. It was found that the obtained biochar had a dendritic and uniform morphology, in which micro-, meso-, and macropores were interconnected regularly in the structure, and the nitrogen and sulfur heteroatoms were successfully homogeneously introduced into the carbon frameworks. On the basis of electrochemical tests, novel shell biochar with an activation temperature of 750 °C demonstrated the highest specific capacitance, which was 201 F g −1 at a current density of 1 A g −1 in a 6 M KOH electrolyte, due to the large BET surface area of 401 m 2 g −1 , and high nitrogen (8.2 wt %) and sulfur content (1.16 wt %). The in situ template approach from natural biomass provided tremendous potential for the active electrode materials of supercapacitors.

show abstract

Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Co-doped Hierarchical Porous Biochar Derived from the Pyrolysis of Mantis Shrimp Shell for Supercapacitor Electrodes

Huang

Ding

et al. 2021

Energy Fuels

Self Cite

View full text Add to dashboard Cite

show abstract

“…The carbon materials of kraft lignin have large specific surface areas of 338-1307 m 2 g −1 , and the synthesized symmetric supercapacitor possesses high specific capacitance of 244.5 F/g at 0.2 A g −1 , excellent rate capability of 81.8% at 40.0 A/g and great cycling stability of 91.6% retention over 10,000 cycles. Similarly, FeCl 3 preloaded with rice husk [180], nitrogen-doped biocarbon materials [181], in situ N-doped activated carbon materials derived from beanpulp [182], carbon nanofibers [7], and yolk-shell carbon spheres (YCS) [183] are also valuable.…”

Section: Pyrolysismentioning

confidence: 99%

A Review of Supercapacitors: Materials Design, Modification, and Applications

et al. 2021

View full text Add to dashboard Cite

Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable to batteries; however, their power density and cyclability are higher by several orders of magnitude relative to batteries, making them a flexible and compromising energy storage alternative, provided a proper design and efficient materials are used. This review emphasizes various types of SCs, such as electrochemical double-layer capacitors, hybrid supercapacitors, and pseudo-supercapacitors. Furthermore, various synthesis strategies, including sol-gel, electro-polymerization, hydrothermal, co-precipitation, chemical vapor deposition, direct coating, vacuum filtration, de-alloying, microwave auxiliary, in situ polymerization, electro-spinning, silar, carbonization, dipping, and drying methods, are discussed. Furthermore, various functionalizations of SC electrode materials are summarized. In addition to their potential applications, brief insights into the recent advances and associated problems are provided, along with conclusions. This review is a noteworthy addition because of its simplicity and conciseness with regard to SCs, which can be helpful for researchers who are not directly involved in electrochemical energy storage.

show abstract

“…6 The thermal treatment, for example, pyrolysis, is a widely applied strategy for the synthesis of N-enriched carbon materials (NCM), many studies were conducted to produce NCM for energy storage applications via the thermal treatment of N-rich biomass such as macroalgae, [7][8][9] expired milk, 10,11 and bean pulp. 12,13 However, the synthesis of NCM from N-poor feedstock requires the incorporation of N into the carbon structure from an external N precursor, for example, melamine, chitosan, and urea (U). Therefore, the search for a sustainable and environmentally friendly method for the incorporation of N into the carbon lattice is necessary.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal treatment, for example, pyrolysis, is a widely applied strategy for the synthesis of N‐enriched carbon materials (NCM), many studies were conducted to produce NCM for energy storage applications via the thermal treatment of N‐rich biomass such as macroalgae, 7–9 expired milk, 10,11 and bean pulp 12,13 …”

Section: Introductionmentioning

confidence: 99%

Thermal treatment versus hydrothermal carbonization: How to synthesize nitrogen‐enriched carbon materials for energy storage applications?

Alhnidi

Straten

Nicolae

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

The thermal treatment of an activated carbon/chars with a nitrogen precursor is not a sustainable nor an efficient method for the incorporation of N into the carbon structure. This study proposes the use of hydrothermal carbonization (HTC) as an environmentally friendly method for the incorporation of N into the bulk of carbon materials. The authors propose the following sequence for the synthesis of Nenriched carbon materials (NCM) for energy storage applications: HTC of the N precursor and biomass ! activation of N-hydrochar (N-HC). To investigate the proposed method, HTCs of spent coffee grounds (SCG) with N precursors (urea and alanine) were conducted at 220 C for 5 hours. The resulted N-HCs were subjected to a mild thermal activation via pyrolysis at 600 C for 2 hours. The results showed that HTC enhances the incorporation of N into the carbon matrix via many reactions, for example, the Maillard reaction (MR) or the Mannich reaction, which may accompany the formation of HC via the solved-intermediate pathway or the solid-to-solid pathway, respectively. However, adjusting some parameters before HTC, for example, the concentration of the N precursor and the pH value of the slurry is important to avoid a significant reduction in the N-HC yield. The proposed method led to the synthesis of NCM with a N content of 10.3wt% The X-ray photoelectron spectroscopy (XPS) confirmed the incorporation of N into the bulk of NCM and showed a significant increase in the content of heterocyclic N compounds (pyridinic N, pyrrolic N, and graphitic N) in the NCM. The incorporation of N via the proposed method significantly improved the electrochemical properties of NCM as the values of the specific capacitance and the electrical conductivity in the NCM increased by five times and four times, respectively.

show abstract

A novel approach for preparing in-situ nitrogen doped carbon via pyrolysis of bean pulp for supercapacitors

Cited by 121 publications

References 57 publications

Nitrogen and Sulfur Co-doped Hierarchical Porous Biochar Derived from the Pyrolysis of Mantis Shrimp Shell for Supercapacitor Electrodes

Nitrogen and Sulfur Co-doped Hierarchical Porous Biochar Derived from the Pyrolysis of Mantis Shrimp Shell for Supercapacitor Electrodes

A Review of Supercapacitors: Materials Design, Modification, and Applications

Thermal treatment versus hydrothermal carbonization: How to synthesize nitrogen‐enriched carbon materials for energy storage applications?

Contact Info

Product

Resources

About