A critical review on the application and recent developments of post-modified biochar in supercapacitors

Li, Xiangping; Zhang, Jianguang; Liu, Bin; Su, Zhenping

doi:10.1016/j.jclepro.2021.127428

Cited by 87 publications

(25 citation statements)

References 135 publications

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“…Carbon-based materials, owing to their advantages such as high intrinsic conductivity, simple preparation method, outstanding rate performance and excellent chemical stability, are widely used in commercial energy-storage devices [ 5 , 6 , 7 ]. Among the carbonaceous materials used as electrode materials, biomass-derived porous carbons exhibit outstanding performance [ 8 , 9 , 10 ]. Biomass is not only naturally abundant and cost-effective, but also produces carbon materials with 3D porous morphology and high specific surface area.…”

Section: Introductionmentioning

confidence: 99%

B, O and N Codoped Biomass-Derived Hierarchical Porous Carbon for High-Performance Electrochemical Energy Storage

et al. 2022

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High specific surface area, reasonable pore structure and heteroatom doping are beneficial to enhance charge storage, which all depend on the selection of precursors, activators and reasonable preparation methods. Here, B, O and N codoped biomass-derived hierarchical porous carbon was synthesized by using KCl/ZnCl2 as a combined activator and porogen and H3BO3 as both boron source and porogen. Moreover, the cheap, environmentally friendly and heteroatom-rich laver was used as a precursor, and impregnation and freeze-drying methods were used to make the biological cells of laver have sufficient contact with the activator so that the layer was deeply activated. The as-prepared carbon materials exhibit high surface area (1514.3 m2 g−1), three-dimensional (3D) interconnected hierarchical porous structure and abundant heteroatom doping. The synergistic effects of these properties promote the obtained carbon materials with excellent specific capacitance (382.5 F g−1 at 1 A g−1). The symmetric supercapacitor exhibits a maximum energy density of 29.2 W h kg−1 at a power density of 250 W kg−1 in 1 M Na2SO4, and the maximum energy density can reach to 51.3 W h kg−1 at a power density of 250 W kg−1 in 1 M BMIMBF4/AN. Moreover, the as-prepared carbon materials as anode for lithium-ion batteries possess high reversible capacity of 1497 mA h g−1 at 1 A g−1 and outstanding cycling stability (no decay after 2000 cycles).

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Section: Introductionmentioning

confidence: 99%

B, O and N Codoped Biomass-Derived Hierarchical Porous Carbon for High-Performance Electrochemical Energy Storage

et al. 2022

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“…Most of the biomass waste (such as corn straw and sludge) produced each year is stacked or burned, resulting in ineffective utilization, which causes environmental pollution [15]. Fiber biochar is a product obtained by the chemical modification of biomass [16].…”

Section: Introductionmentioning

confidence: 99%

Application of Fiber Biochar–MOF Matrix Composites in Electrochemical Energy Storage

Gao

Zhang

et al. 2022

Polymers

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Fiber biochar–metal organic framework (MOF) composites were successfully prepared by three different biochar preparation methods, namely, the ionic liquid method, the pyrolysis method, and the direct composite method. The effects of the different preparation methods of fiber biochar on the physical and chemical properties of the biochar–MOF composites showed that the composite prepared by the ionic liquid method with the Zeolite-type imidazolate skeleton -67 (ZIF-67) composite after high temperature treatment exhibited a better microstructure. Electrochemical tests showed that it had good specific capacity, a fast charge diffusion rate, and a relatively good electrochemical performance. The maximum specific capacity of the composite was 63.54 F/g when the current density was 0.01 A/g in 1 mol/L KCl solution. This work explored the preparation methods of fiber biochar–MOF composites and their application in the electrochemical field and detailed the relationship between the preparation methods of the composites and the electrochemical properties of the electrode materials.

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“…In addition, mobile electronics and mobile power supply have promoted energy storage question to one of the most challenging technological subjects of our days. Batteries are, of course, the best known and direct means of energy storage; however, particular attention is also recently paid to very-high-capacity capacitors, which are generally named supercapacitors (SC) [1][2][3][4][5][6]. Supercapacitors, like all capacitors, have a great advantage; they can be fast charged and discharged, therefore, can also provide a direct means of energy storage.…”

Section: Introductionmentioning

confidence: 99%

“…So it is important to valorize a waste (like the raw biomass or even the biochar) for an energy application like the production of supercapacitors. In this respect, biochar does make an excellent material applicable to the construction of supercapacitors [1][2][3][7][8][9][10][11][12][13][14][15][16]. Biochars usually have high surface area and additionally have a balanced distribution of micropores and meso/macro pores and a significant amount of surface groups.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the photoelectrochemical production of hydrogen peroxide under intermittent light supply in the presence of an optimized biochar supercapacitor

Dhawle

Vakros

Dracopoulos

et al. 2022

Electrochimica Acta

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A critical review on the application and recent developments of post-modified biochar in supercapacitors

Cited by 87 publications

References 135 publications

B, O and N Codoped Biomass-Derived Hierarchical Porous Carbon for High-Performance Electrochemical Energy Storage

B, O and N Codoped Biomass-Derived Hierarchical Porous Carbon for High-Performance Electrochemical Energy Storage

Application of Fiber Biochar–MOF Matrix Composites in Electrochemical Energy Storage

Enhancement of the photoelectrochemical production of hydrogen peroxide under intermittent light supply in the presence of an optimized biochar supercapacitor

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