Carbon material doped capacitors
Biomass-derived nitrogen-doped porous carbon was prepared using jujube shell as the precursor through a two-step process involving activation and nitrogen-doping. Different nitrogen sources, organic-N and inorganic-N, were employed to modulate the nitrogen-doping forms, aiming to analyze the influence of various nitrogen-doping … - Download [PDF]
Jujube shell-derived organic/inorganic nitrogen-doped porous carbon …
Biomass-derived nitrogen-doped porous carbon was prepared using jujube shell as the precursor through a two-step process involving activation and nitrogen-doping. Different nitrogen sources, organic-N and inorganic-N, were employed to modulate the nitrogen-doping forms, aiming to analyze the influence of various nitrogen-doping …
Self-templating synthesis strategy of oxygen-doped carbon from …
Top and side views of Zn absorbed (a) carbon and (b) O-doped carbon; Top and side views of the electron density difference about (c) carbon and (d) O-doped carbon; (e) The density of states of carbon and O-doped carbon. ... Electrochemical zinc ion capacitors: Fundamentals, materials, and systems. Adv. Energy Mater., 11 (21) (2021) Google ...
High-performance symmetric supercapacitors based on carbon …
Carbon materials can supply a good charge transfer path for moving the generated electrical energy in composite electrodes 12,13,14,15, the nanostructured carbon is one of the core electrode ...
2D crumpled nitrogen-doped carbon nanosheets anode with …
Li-ion capacitors (LICs) are promising to simultaneously achieve battery-level energy density and supercapacitor-level power density, but the slow kinetics of diffusion-controlled battery anodes lead to unmatched two-electrode kinetics at the device level. Herein, we report a capacitive-dominated anode of tw Design and characterization …
Hydrothermal Activation of Porous Nitrogen-Doped Carbon Materials …
The tests of nitrogen-doped carbon materials as electrodes in 1M H 2 SO 4 electrolyte and sodium-ion batteries showed improvement of electrochemical performance after hydrothermal treatments especially when ammonia was used. The activation method developed in this work is hopeful to open up a new route of designing …
Revealing the Self-Doping Defects in Carbon Materials for the …
Zn-ion capacitors are attracting great attention owing to the abundant and relatively stable Zn anodes but are impeded by the low capacitance of porous carbon cathodes with insufficient energy storage sites. Herein, using ball-milled graphene with different defect densities as the models, we reveal that the self-doping defects of carbon …
Carbon-based Materials for Lithium-ion Capacitors
The carbon-based battery-type materials, which can either be anode or cathode, are highlighted on carbonaceous materials, carbon/transition metal compounds, carbon/polyanions composites, carbon ...
Cobalt nanoparticles encapsulated by nitrogen-doped carbon …
However, there are few studies on carbon materials derived from metal organic framework (MOF) embedded by single metal nanoparticles. Moreover, there are still relatively few studies on the application of monometallic nanoparticles into MOF-derived N-doped carbon materials for lithium-ion capacitors [20], [30], [36].
Preparation of Sulfur‐doped Carbon for …
Most of the S-doped carbon materials are prepared by annealing a mixture of carbon and sulfur sources. However, different synthetic approaches and precursor materials produce various target …
N, O self-doped hierarchical porous carbon materials for …
N, O self-doped hierarchical porous carbon materials for high-performance super-capacitors Liu Yanga, Hong Zhenga,b*, Lian Liua, Wenjie Wua and Shuya Wangc aDepartment of Chemistry, Chongqing ...
Coal-derived N,O co-doped mesoporous carbon as electrode material …
Request PDF | Coal-derived N,O co-doped mesoporous carbon as electrode material for high performance aqueous electric-double layer capacitors and zinc-ion hybrid supercapacitors | Carbon-based ...
Nitrogen, nickel and graphene oxide doped carbon xerogel as an …
Abstract N-, Ni-, and graphene oxide (GO)-doped carbon xerogel were synthesized from melamine-resorcinol-formaldehyde gels by drying followed by pyrolysis at 950 °C. The mass of nickel and GO in carbon xerogel, formed after carbonization was 5 and 1%, respectively. The obtained product was characterized by scanning electron …
Porous core-shell B-doped silicon–carbon composites as …
Small (∼150 nm) porous core-shell B-doped silicon-carbon spheres synthesized. • Composited with rGO as high performance anode material for Li ion capacitor. • Glucose derived carbon nanospheres of 1,947 m 2 g −1 as cathode for Li ion capacitor. • Achieve 149 Wh kg −1 at 0.328 kW kg −1 and maintain 82.1 Wh kg −1 at …
New Carbon Materials
The final samples were denoted as NBSPC-X (nitrogen and boron co-doped SA derived porous carbon material), where X represented mass of NH4B5O8·4H2O. 2.2 Characterization The structure of samples was tested by transmission electron microscopy (TEM, Hitachi 7700), scanning electron microscopy …
Cork-Derived Carbon Sheets for High-Performance Na …
A sodium-ion capacitor assembled with the optimized S-doped carbon sheets and the highly porous carbon sheets with mass matching ratios provided the best energy/power characteristics (90 Wh …
Perspective on High-Energy Carbon-Based …
Supercapacitors based on carbon materials have advantages such as high power density, fast charging/discharging capability, and long lifetime stability, playing a vital role in the field of electro...
Recyclable NaCl template assisted preparation of N/O co-doped …
N/O co-doped porous carbon materials were synthesized by one-step carbonization method at low temperature. ... O doped tremella-shaped porous carbon for zinc-ion hybrid capacitors with long life and enhanced energy density. Mater. Lett., 329 (2022), Article 133180, 10.1016/j.matlet.2022.133180.
Status and Opportunities of Zinc Ion Hybrid Capacitors: …
History and benefits of zinc ion hybrid capacitors are introduced. Carbon materials with different dimensions are developed for the cathodes. Relationship between carbon structures and capacitive …
N/P/O doped porous carbon materials for supercapacitor with …
In this paper, the carbon material, TT (Zn/P)-700, was optimized with increasing amounts of P heteroatom, forming a reasonable pore structure from micropore …
Coal-derived N,O co-doped mesoporous carbon as electrode material …
A symmetric electric-double layer capacitor (EDLC) and a zinc-ion hybrid supercapacitor ... Table 2 compares the obtained gravimetric specific capacitance with that reported N or N,O doped carbon materials in literature. It shows that the N/O-DMCC is superior to most of the reported materials, further proving its excellent electrochemical ...
Recent advances in carbon-based supercapacitors
Yushin''s group demonstrated the integration of N-doped carbon nanowires@metal oxide (MnO 2 and Fe 2 O 3) composites into conductive fabrics for asymmetric supercapacitors . 147 N-doped carbon nanowires functioned as a stable conductive substrate, while the shortened diffusion channels within the metal oxide particles largely facilitated ion ...
Edge-nitrogen doped porous carbon for energy-storage …
Moreover, different types of nitrogen doping exhibited distinct roles in carbon materials. It was widely accepted that pyrrolic nitrogen and pyridinic nitrogen are electrochemically active sites in carbon materials, while graphitic nitrogen doped into the carbon lattice has no effect on K + adsorption. Therefore, it is necessary to explore facile …
N, O self-doped hierarchical porous carbon materials for high ...
Biomass carbon materials have been widely used as electrode materials for super-capacitors (SC) due to their economic, environmental, and sustainable characteristics.
High Specific Capacitance Electrode Material for …
Using this nitrogen-doped carbon as electrode materials for supercapacitor, high specific capacitance of 318.2 F/g at 0.25 A/g and good high-rate capability are achieved. The stable cycling performance …
N/P/O doped porous carbon materials for supercapacitor with …
XPS was performed to identify the chemical composition and functional groups on the surface of the carbon materials. The XPS showed that TT-700 was comprised of C, N, O, and TT(Zn/P)-700 contained C, N, O and P (Fig. 4).The two carbon materials possessed the same forms of carbon and nitrogen, but the existing forms of …
Recent progress of cathode materials for aqueous zinc-ion capacitors …
Carbon materials doped by heteroatom or modified by functional groups have been proven to effectively improve the electrolyte wettability, ... both the capacitor-type carbon-based materials and the battery-type metal compounds have been well-studied as the cathodes in the current AZICs. Recently, other novel materials have also …
Hydrothermal Activation of Porous Nitrogen-Doped …
Highly porous nitrogen-doped carbon nanomaterials have distinct advantages in energy storage and conversion technologies. In the present work, hydrothermal treatments in water or ammonia solution …
Nitrogen self-doped porous carbon material derived from metal …
Some studies have shown that MOFs are promising precursors for the carbon materials. Xu et al. [32], prepared a carbon material with a high specific surface area (2872 m 2 g −1) by using a MOF as the precursor. The carbon electrode material for super-capacitor shows an excellent electrochemical performance (258 F g −1 at 0.25 A …
Metal–organic framework-derived CoSe2@N-doped carbon
Cobalt selenide (CoSe2) has garnered considerable attention as a prospective anode candidate for advanced lithium-ion storage, prompting comprehensive investigations. However, CoSe2-based anodes usually suffer from significant volume variation upon lithiation, leading to unsatisfactory cycling stability. Herein, a versatile …
Combined effect of nitrogen-doped functional groups and …
The N-doped carbon N-APC-800 exhibited good performance of N-doped carbon, reaching 91% capacitance retention at 5 A g −1. This mechanism is even more pronounced at higher current loads.
Recent Advances on Nitrogen‐Doped Porous Carbons Towards ...
Incorporating nitrogen atoms into carbon materials can affect a capacitor''s capacitance by altering the material''s electronic properties. In certain cases, N-doping can enhance capacitance by modifying the charge storage behavior and improving the material''s conductivity, thereby increasing its potential to store and release electrical ...
N-doped carbon materials as electrodes for highly …
This article reports a strategy to use nitrogen-doped carbon materials as electrodes for supercapacitors. Depending on the carbon precursor, the porous structure is changed with specific surface …