Supercapacitors with high nitrogen content by cage-like Ganoderma lucidum spore

Lian, Jie; Cheng, Ru; Xiong, Lingshan; Pang, Dongqiang; Tian, Xiuquan; Lei, Jia; He, Rong; Yu, Xiaofang; Duan, Tao; Zhu, Wenkun

doi:10.1016/j.apsusc.2019.07.109

Cited by 21 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This multilayer lamellar morphology with well‐arranged pore passage presumably due to the etching of KOH. Figure 2C further reveals a wide range of ordered graphite fringes and hexagonal array pore structures [26] . The graphitized monolith has highly ordered hexagon porous network morphology and obvious graphite stripes (Figure 2C).…”

Section: Resultsmentioning

confidence: 90%

“…The broad peaks neat 43° indicates that materials have been graphitized. The graphitized carbon atoms were hexagonal planar network structures [26,31] . A broad peak was observed in HOMAC‐0, indicating amorphous carbon structures [32] .…”

Section: Resultsmentioning

confidence: 99%

“…The activation process increased the proportion of micropores in ordered pores, the carbon materials exhibit highly ordered structures with a hexagonal arrangement [37] . Therefore, the conductivity, stability and corrosion resistance of the materials were superior to amorphous carbon materials [26] …”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Highly Ordered Micropores Activated Carbon from Long Fiber Biomass for High Energy Density Supercapacitors

Zhang

Tian

et al. 2021

ChemistrySelect

View full text Add to dashboard Cite

The electrochemical performance of carbon based supercapacitors not only depends on the specific surface area and conductivity, but also the structure of materials. In order to construct the carbon materials with effective structure, the long fibrous plant‐saussurea involucrata stalk was chosen as the new style carbon source. Highly ordered micropores activated carbon (HOMAC) materials have been successfully obtained via KOH chemical activation method. The synthesized HOMAC exhibits high specific surface area of 2692 m2 g−1 and pore volume of 1.14 cm3 g−1. The assembled HOMAC‐based electrode can deliver a high specific capacitance of 379 F g−1 at 2 mV s−1 in 1 M H2SO4 aqueous electrolyte, and show excellent cyclic stability (the capacitance retention ∼95 %) over 10000 cycles at a current density of 1 A g−1, which authenticates excellent charge storage capacity of electrode material. Moreover, the operation voltage window can be expanded to 0–1.8 V in 1 M Na2SO4 electrolyte for the 2‐electrode system. The symmetric supercapacitor can deliver a high energy density of 33.91 Wh kg−1 at power density of 180.03 W kg−1. These high performances can be ascribed to the high surface area and ordered microporous structures obtained using KOH as activator. We further discussed the relationship between fibrous plants and electrochemical performances of the final activated carbon materials. This present work can provide beneficial guidance for the preparation of high performance activated carbon electrodes from a biomass‐based carbon source. Comparing with two different biomass materials, it can be found that the ionic diffusion coefficient of saussurea involucrata is 5.074×10−13 m2 s−1, which is 2.5 times of cotton stalk (1.547×10−13 m2 s−1). This phenomenon indicates the different ion transmission rate in different pore structures.

show abstract

Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Highly Ordered Micropores Activated Carbon from Long Fiber Biomass for High Energy Density Supercapacitors

Zhang

Tian

et al. 2021

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…The structures of 3DAC-20 and the control samples were further evaluated by XRD, Raman and XPS analyses. The XRD pattern in figure 3(a) showed two typical peaks around 25°and 42°, belonging to the (002) and (100) planes of carbon [39,40]. According to the broad (002) diffraction peak at 2θ=25°, the plane interlayer distance of∼0.36 nm for the series of samples was shown, indicating a loosened layered structures.…”

Section: Structure and Morphology Characterizationmentioning

confidence: 97%

Controlling and optimizing the morphology and microstructure of 3D interconnected activated carbons for high performance supercapacitors

Zhang

Han

et al. 2020

Nanotechnology

View full text Add to dashboard Cite

For an active electrode material, the morphology, microstructure and the effective specific surface area derived from them, have a dominant effect for the high performance supercapacitors. In this study, 3D interconnected activated carbons with controlled and optimized morphologies and porous structures were prepared from accessible carbon source and graphene oxide by a hydrothermal carbonization and following an activation method. Through optimizing the ratios of the precursors and reaction conditions, an electrode material with excellent specific surface area of 2318 m2 g−1, meso-/macro-pore ratio of 63.2% (meso-/macro-pore volume reached to 0.83 cm3 g−1), as well as an outstanding electrical conductivity of 46.6 S m−1, was obtained. The materials exhibit superior double-layer capacitive performances on a symmetric supercapacitor, delivering superior specific capacitance of 157 F g−1 in organic electrolyte system at current density of 0.5 A g−1, excellent energy density of 37.6 W h kg−1 with a power density of 7.1 kW kg−1 and good cycling stability of capacitance retention of 94% over 7000 cycles. These results offer a practical method to prepare the desired carbon electrode materials with controlled morphology and structure for high efficiency electrochemical energy storage devices.

show abstract

Boron and Nitrogen Co‐Doped Trimodal‐Porous Wood‐Derived Carbon for Boosting Capacitive Performance

et al. 2019

View full text Add to dashboard Cite

Heteroatom doping and a porous structure are two significant factors that improve the capacitance performance of carbon‐based electrodes, but there are often one‐sided considerations between them. Herein, effective B, N co‐doping and trimodal‐porous structure from the carbonization of sustainable natural wood are obtained at the same time. The unique pore structure is coarsely tuned by a modified ZnAc2‐assisted hypersaline route and further fine‐tuned by controlling the doping levels of boron and nitrogen. The high specific surface area of porous carbon up to 1201 m2 g−1 is coordinated with the trimodal foam‐like nanopores. This carbon‐based material as a supercapacitor electrode can provide not only trimodal‐porous ion transfer highways but also doping‐induced pseudocapacitance. The resulting pore and heteroatom reengineered wood‐derived carbon harvests a remarkable capacitance of 479 F g−1 at 1 A g−1, among the highest values in reported B, N co‐doped carbon electrodes. The aqueous symmetric supercapacitor exhibits energy density of 18.5 Wh kg−1 and power density of 6.4 kW kg−1, along with >90% capacitance retention, both in H2SO4 and Li2SO4 electrolyte over 10 000 cycles.

show abstract

Supercapacitors with high nitrogen content by cage-like Ganoderma lucidum spore

Cited by 21 publications

References 40 publications

Highly Ordered Micropores Activated Carbon from Long Fiber Biomass for High Energy Density Supercapacitors

Highly Ordered Micropores Activated Carbon from Long Fiber Biomass for High Energy Density Supercapacitors

Controlling and optimizing the morphology and microstructure of 3D interconnected activated carbons for high performance supercapacitors

Boron and Nitrogen Co‐Doped Trimodal‐Porous Wood‐Derived Carbon for Boosting Capacitive Performance

Contact Info

Product

Resources

About