Anode For Supercapacitors Research Articles

‘MoS2-coated nitrogen/oxygen co-doped carbon nanocages composite as active material for supercapacitor electrodes

Nitrogen/oxygen co-doped carbon nanocages (NOCN) have been deemed as promising materials in renewable energy-storage applications. Herein, we report a facile one-pot hydrothermal approach for formation of three-dimensional (3D) flower-like MoS2 nanoflakes/NOCN composite (MoS2@NOCN) with excellent storage properties as anode for supercapacitor. As a result, ultrathin MoS2 nanosheets were vertically grown onto the surface of NOCN, which can prevent sheet aggregation and provide a rapid pathway for electron transfer. The as-prepared MoS2@NOCN composites were characterized by electrochemical measurements to demonstrate the supercapacitor performance. The results indicate that MoS2@NOCN-3 exhibited a high specific capacitance (240.8 F g−1 at 0.5 A g−1) and excellent rate performance (approximately 46.4 % from 1 A g−1 to 10 A g−1). The as-obtained composites demonstrated their potential applications in supercapacitor electrode materials.

Nanostructured 3D Mesoporous α-Fe2O3 Nano-Cubes As a High-Performance Electrode for Supercapacitors

Development of energy storage devices of high energy density and long cycle life is one of the pressing needs of electronic devices. Pseudo-capacitors with iron oxide electrodes show promising energy storage devices because they are economical and safe, but have poor conductivity and stability. To achieve an improved electrochemical performance such as shorter ion-diffusion path, faster ion accessibility, and higher conductivity, a rationally design of electrode material is highly desirable. Here, we shed the light on how three-dimensional (3D) Nano porous networked α-Fe2O3 nano-cubes serves as a supercapacitor electrode. Here we show the high specific capacitance and long-life supercapacitor anode by developing a hierarchical three-dimensional α-Fe2O3 nano-cubes. KOH is used as an aqueous electrolyte. The synthesized annealed nano-cubes (PNC) have high surface areas of 5.127m2/g. The annealed Hematite (α-Fe2O3) NC show good thermodynamic stability with high reversible redox activity. The half-cell anode based on this nanostructure give rise to a high specific capacitance value of ~520F/g at a current density of 1 A/g and ~90% of the capacitance can be retained at 2 A/g after 1000 redox cycles (indicates the good cyclic stability). The present work demonstrates that binder and conductive additive-free 3D Nano porous electrodes open up a new avenue to fabricate high surface area electrodes for improved charge storage performance. These performance features are superior among those reported for iron oxide-based supercapacitors. High specific capacitance value, stable cycling, and facile preparation make Hematite NC(α-Fe2O3) an excellent material for use as supercapacitor electrodes.

Work-function-induced interfacial built-in electric field optimized electronic structure of V-CoSx@NiTe as high capacity and robust electrode for supercapacitors

The pursuit of achieving high energy density and exceptional stability in supercapacitors presents both allure and challenge. Herein, we strategically engineered hierarchical V-CoSx@NiTe core-shell heterojunction nanorod arrays, with V-doped amorphous CoSx nanosheets as the shell and one-dimensional (1D) NiTe nanorods as the core on nickel foam (NF). Theoretical computations elucidated the disparate intrinsic work functions of V-CoSx and NiTe, culminating in a robust built-in electric field at the interface. This field orchestrated interfacial charge distribution, expediting electron transport and optimizing OH– adsorption. V doping enhanced electronic states density at the Fermi energy level of CoSx and introduced new reaction sites. Additionally, the good hydrophilic properties and unique hierarchical core-shell morphology of the amorphous V-CoSx@NiTe/NF electrodes were favorable for increasing the specific surface area, improving the structural stability and facilitating the diffusion of OH–. Consequently, V-CoSx@NiTe/NF attained an impressive areal capacitance of 10.52 F cm−2 at 2 mA cm−2, preserving energy storage performance, morphology, and composition across 15,000 cycles. An asymmetric supercapacitor (ASC) device constructed with V-CoSx@NiTe/NF as the positive electrode and commercial activated carbon (AC) as the negative electrode exhibited energy (power) density of 0.42 mWh cm−2 (1.63 mW cm−2), and maintained ∼100 % capacity after 10,000 cycles. Significantly, a single device powered both a fan and a light bulb, while two devices in series illuminated a blue light-emitting diode (LED) for up to 2 h. This investigation introduces an innovative strategy for designing high-performance supercapacitor anode materials.

Exposed crystal facet regulation of Cu2S/C hollow nanocube anode for high-performance quasi-solid Ni-Cu battery and supercapacitor

Copper sulfides are promising anode materials for aqueous rechargeable devices. However their wide-spread applications have been greatly limited by the rapid activity loss, insufficient structure stability and poor conductivity. Herein, an innovative crystal-facet engineering method has been firstly proposed to remarkably improve the electrochemical reversibility and activity of the anode. And the establishment of the intimate HKUST-1 derived carbon protective layer and the utilization of the gel electrolyte have been simultaneously adopted to optimize the electrochemical reversibility and conductivity of the copper sulfide anode. With the regulation of the dominant exposed facet, the electrode possesses high specific capacitance of 1261.3 F·g−1. The assembled Ni-Cu battery and the hybrid supercapacitor deliver excellent energy densities (56.7 Wh·kg−1 and 16.7 Wh·kg−1) and admirable cycling stabilities (64.9% capacity retention after 2000 cycles and 68.8% capacity retention after 5000 cycles). In addition, the main reason for the cycling stability decay has been investigated in detail. And the density functional theory (DFT) calculations have also completely demonstrated the dramatically positive effects of the exposed facets and carbon covering layer on the improvement of the affinity between the electrode and electrolyte ions, as well as the electrical conductivity.

High-performance CF/MXene/β-PbO2 materials as anodes for asymmetric supercapacitors

MXene has excellent capacitive properties as a two-dimensional material, but its cycling stability is poor. β-PbO2 is one of the common crystalline forms of lead dioxide, and it has excellent electrochemical properties and cyclic stability and has potential as a capacitor electrode material. However, the capacitive performance of β-PbO2 as a capacitor electrode material is not ideal. Therefore, CF/MXene/β-PbO2 (CMP) composites were prepared in this study by combining β-PbO2 with CF/MXene (CM) using a constant current electrodeposition method, and their electrochemical energy storage properties were investigated. The ordered structure of interwoven CF is used to fix MXene, which has metallic properties and large layer spacing, as the matrix material. This utilization enables faster ion transport and electron storage. The electrochemical advantages of β-PbO2 and CM can be unified by the synergistic effect of the composites, which results in a high specific capacity (399.42 F g−1) of the CMP electrode at 0.2 A g−1. In addition, the CM//CMP asymmetric supercapacitor constructed in 1 M Na2SO4 solution has a wide potential window of 2.0 V and a high specific capacitance of 193.8C g−1, and the capacity remains 54.3% of the initial value after 5000 cycles at a charge/discharge rate of 40 mA g−1. This work provides important research ideas and clues for the application of β-PbO2 composite electrode materials in supercapacitors.

Structural, optical, and dielectric properties of hydrothermally synthesized SnO2 nanoparticles, Cu/SnO2, and Fe/SnO2 nanocomposites

The structural and optical properties, as well as dielectric characteristics at various frequencies (0.1 Hz—20 MHz) and temperatures, T (300–400 K), of hydrothermally synthesized SnO2 nanoparticles, Cu/SnO2, and Fe/SnO2 composites have been investigated. The crystal structure is mostly formed of a tetragonal SnO2 phase, with a second phase of monoclinic CuO or rhombohedral Fe2O3 detected in Cu/SnO2, and Fe/SnO2 composites, respectively. The direct optical band gap, residual dielectric constant, and density of charge carriers are increased, while ac conductivity (σ ac) and dielectric constant decreased in Cu/SnO2 and Fe/SnO2. The value of σ ac was decreased while the electric Q-factor was increased by increasing T. SnO2 obeyed the hole-conduction mechanism for 400 ≥ T (K) ≥ 300, while Cu/SnO2 and Fe/SnO2 obeyed the electronic-conduction mechanism for 400 ≥ T (K) > 300. The binding energy is independent of T for SnO2, whereas it increases with rising T for Cu/SnO2 and Fe/SnO2 composites. F-factor and electronic polarizability are improved by a rise of T for SnO2 and Cu/SnO2 meanwhile are decreased for Fe/SnO2. The electrical impedance of the grains and their boundaries as well as equivalent capacitance are increased by increasing T and have higher values for Fe/SnO2 at T > 300 K. The obtained results recommend the synthesized Cu/SnO2 and Fe/SnO2 composites to be used as catalysts for water purification, anodes for lithium batteries, supercapacitors, and solar cell applications amongst others.

Phase controlled Fe2N@Fe3O4 core-shell nanoparticles hybridized with nitrogen-doped reduced graphene oxide for boosted charge transfer in asymmetric supercapacitor

Due to environmental concerns and requirements for sustainable development, there are increasing demands for electrode materials with high energy density in supercapacitors, utilizing earth-abundant materials. In that response, we designed a novel composite material by hybridizing core–shell nanoparticles (NPs), which were composed of iron oxide (Fe3O4) and its derivative iron nitride (Fe2N) as plentiful elements in the earth crust or air, with nitrogen-doped reduced graphene oxide (NrGO). The electrode prepared with the Fe2N@Fe3O4 NPs/NrGO demonstrated outstanding specific capacitance of 341.3 F g−1 at 0.5 A g−1, along with an improved rate capability approximately 4 times higher than that of pristine Fe3O4 NPs/GO. Also, the Fe2N@Fe3O4 NPs/NrGO exhibited stable performance within a wide potential range of −1.05 to 0.15 V and excellent cycle stability of 91.2 % at 5 A g−1 after 10,000 cycles. These exceptional characteristics might be attributed to the enhanced electrical conductivity and increased surface area of the material, achieved through the simultaneous formation of the NrGO from the GO and the phase-transformed Fe2N from the pristine Fe3O4 in a monolithic nitridation process. In addition, the core–shell hybrid was used for an asymmetric supercapacitor (ASC) anode, and it exhibited a wide potential range of 1.65 V and a maximum energy density of 28.6 Wh kg−1 at a power density of 825.0 W kg−1. Moreover, a green LED was successfully powered by the serial connection of two ASCs. These results and demonstrations prove that our strategies for designing materials composition, hybrid heterostructure, and core–shell configuration are highly effective in improving energy density, making them promising and economical next-generation energy device materials utilizing earth-abundant elements (e.g. Fe, O, N).

Fe3O4 nanoparticles anchored on carbon nanotubes as high-performance anodes for asymmetric supercapacitors

Fe3O4/CNT composites are synthesized with ethylene glycol as solvent by a one-step solvothermal method and used as anode materials for asymmetric supercapacitors (ASC). An appropriate amount of water in ethylene glycol can accelerate the formation of Fe3O4 and reduce the average size of Fe3O4 to around 20 nm. However, spherical Fe3O4 particles larger than 100 nm will form in pure ethylene glycol for long reaction time. The Fe3O4/CNT composite with small Fe3O4 nanoparticles exhibits a high specific surface area, promoted electron transfer ability, as well as a high utilization rate of active materials. The optimized electrode shows a high specific capacity of 689 C g−1 at 1 A g−1, and remains 443 C g−1 at 10 A g−1. The inferior long-term cycling stability is due to the phase transition of Fe3O4 and a reductive effect to form metallic Fe. An ASC using Fe3O4/CNT and NiCoO2/C composites as anode and cathode, respectively, delivers a high energy density of 58.1 Wh kg−1 at a power density of 1007 W kg−1 in a voltage window of 1.67 V and has a capacity retention of 63% after 5000 cycles. The self-discharge behavior of the ASC is also investigated.

Integrating V-doped CoP on Ti3C2Tx MXene-incorporated hollow carbon nanofibers as a freestanding positrode and MOF-derived carbon nanotube negatrode for flexible supercapacitors

Novel architectural electrode materials that are freestanding and exhibit improved electrochemical performances in flexible asymmetric supercapacitors are urgently needed; however, designing these materials is challenging. Herein, a Ti3C2TX MXene-aligned hollow carbon fiber (MX/HCF) is engineered and vanadium-doped cobalt phosphide nanorod arrays are grown on it (V-CoP@MX/HCF) and applied for supercapacitor positrode. V doping modulates the surface structure and electronic environment of CoP nanorods grown over conductive and flexible MX/HCFs. As expected, the optimized V-CoP@MX/HCF exhibits a better electrochemical performance (1896.8Fg−1) than that of CoP@MX/HCF and CoP@HCF. For the negative electrode, zeolitic imidazolate framework-67 (ZIF-67) grown on electrospun polyacrylonitrile (PAN) fibers is converted to cobalt nanoparticle-encapsulated nitrogen-doped carbon nanotubes at carbon nanofibers (Co-CNT@CNF) by a simple heat treatment without the burden of external catalysts and reducing gases. The as-designed freestanding Co-CNT@CNF delivers a specific capacitance of 405.5Fg−1 with superior cycling stability. A flexible asymmetric supercapacitor (V-CoP@MX/HCF//Co-CNT@CNF) is designed that unveil remarkable electrochemical properties, such as a high energy density of 72.4 Wh kg−1 at 800.12 W kg−1 and good capacitance retention (91.4 %) after 10,000 charge/discharge cycles. Furthermore, the device can maintain a consistent performance regardless of the bending degree. More importantly, this work provides new opportunities to rationally design novel freestanding cathodes and anodes for high-performance flexible asymmetric supercapacitors.

Fabrication of Multi-Layered Paper-Based Supercapacitor Anode by Growing Cu(OH)2 Nanorods on Oxygen Functional Groups-Rich Sponge-Like Carbon Fibers.

This work addresses the challenges in developing carbon fiber paper-based supercapacitors (SCs) with high energy density by focusing on the limited capacity of carbon fiber. To overcome this limitation, a sponge-like porous carbon fiber paper enriched with oxygen functional groups (OFGs) is prepared, and Cu(OH)2 nanorods are grown on its surface to construct the SC anode. This design results in a multi-layered carbon fiber paper-based electrode with a specific structure and enhanced capacitance. The Cu(OH)2 @PCFP anode exhibits an areal capacitance of 547.83 mF cm-2 at a current density of 1mA cm-2 and demonstrates excellent capacitance retention of 99.8% after 10 000 cycles. Theoretical calculations further confirm that the Cu(OH)2 /OFGs-graphite heterostructure exhibits higher conductivity, facilitating faster charge transfer. A solid-state SC is successfully assembled using Ketjen Black@PCFP as the cathode and KOH/PVA as the gel electrolyte. The resulting device exhibits an energy density of 0.21Wh cm-2 at 1.50mW cm-2 , surpassing the performance of reported Cu(OH)2 SCs. This approach, combining materials design with an understanding of underlying mechanisms, not only expands the range of electrode materials but also provides valuable insights for the development of high-capacity energy storage devices.

Boosting the electrochemical performance of NiFe2O4/Carbon composite materials by nitrogen doping for supercapacitors application

The development of high-performance anode materials is of great importance for improving the electrochemical performance of asymmetric supercapacitors. Here, nickel ferrite/porous carbon composite is synthesized via hydrothermal approach and the electrochemical properties are improved by nitrogen doping process. As the surface nitrogen content of the porous carbon precursor increased from 2.40 at.% to 9.53 at.%, the nickel ferrite/porous carbon composite exhibited substantial improvement in specific capacitance (increased from 136.4 to 201.4 F g−1 at 1 A g−1) in an alkaline aqueous electrolyte. The energy density of the assembled asymmetric supercapacitor was increased from 17.7 W h kg−1 to 11.2 W h kg−1, and the cycle retention rate after 10,000 cycles at 2 A g−1 was increased from 16.5 % to 85.7 %. Nitrogen atoms on the carbon surface provide active sites for the growth of nickel ferrite nanoparticles and enhance the interfacial effect between nickel ferrite nanoparticles and porous carbon materials, enhancing the charge transfer and preventing particle aggregation during charge and discharge processes. The fabricated nickel ferrite/nitrogen-doped porous carbon composite exhibits excellent capacitance and cycling stability, providing a new option for asymmetric supercapacitor anode materials.

Self-assembly of CoNiFe LDHs/MoS2 composite with hydrangea/floret hierarchical structure for asymmetric supercapacitors

Layered double hydroxides (LDHs) materials are broadly utilized as anode for supercapacitors. However, the weak electronic conductivity of LDHs seriously limited electron transmission, resulting in unsatisfactory electrochemical properties. In this paper, CoNiFe LDHs/MoS2 nanocomposite with hydrangea/floret hierarchical structure is fabricated by self-assembled growth process. Owing to the synergistic effects of MoS2 and LDHs, the porous CoNiFe LDHs/MoS2 nanocomposite possesses larger specific surface area and superior electronic conductivity, leading to enhanced electrochemical performance. The CoNiFe LDHs/MoS2 electrode shows high specific capacity (286.11 mAh g−1 at 1 A g−1) and good rate performance. Furthermore, the CoNiFe LDHs/MoS2//active carbon asymmetric supercapacitors deliver an energy density of 70.77 Wh kg−1 at 800.0 W kg−1 and excellent cycling performance (94.85 % after 10,000 cycles). Therefore, the CoNiFe LDHs/MoS2 nanocomposite exhibits outstanding electrochemical performance, and this work extends a new application for the fabrication of LDHs/MoS2 materials in energy storage field.

N-Doped Porous Carbon-Nanofiber-Supported Fe3C/Fe2O3 Nanoparticles as Anode for High-Performance Supercapacitors.

Exploring anode materials with an excellent electrochemical performance is of great significance for supercapacitor applications. In this work, a N-doped-carbon-nanofiber (NCNF)-supported Fe3C/Fe2O3 nanoparticle (NCFCO) composite was synthesized via the facile carbonizing and subsequent annealing of electrospinning nanofibers containing an Fe source. In the hybrid structure, the porous carbon nanofibers used as a substrate could provide fast electron and ion transport for the Faradic reactions of Fe3C/Fe2O3 during charge-discharge cycling. The as-obtained NCFCO yields a high specific capacitance of 590.1 F g-1 at 2 A g-1, superior to that of NCNF-supported Fe3C nanoparticles (NCFC, 261.7 F g-1), and NCNFs/Fe2O3 (NCFO, 398.3 F g-1). The asymmetric supercapacitor, which was assembled using the NCFCO anode and activated carbon cathode, delivered a large energy density of 14.2 Wh kg-1 at 800 W kg-1. Additionally, it demonstrated an impressive capacitance retention of 96.7%, even after 10,000 cycles. The superior electrochemical performance can be ascribed to the synergistic contributions of NCNF and Fe3C/Fe2O3.

One-step microwave synthesis of FeSe2@CNT as high-performance supercapacitor anode material

In this work, FeSe2@CNT nanocomposite anode materials are fabricated using a convenient and efficient one-step microwave method. The FeSe2@CNT electrode exhibits superior electrochemical performance. The carbon nanotube structure effectively mitigates the severe volume change in the FeSe2@CNT electrode during continuous charge and discharge. Thus, the capacitance value of 573 F g−1 and capacitance retention of 81.9% for 3000 constant current charge and discharge cycles are achieved. In addition, the asymmetric device assembled with FeSe2@CNT as the anode and NiSe2@CNT as the cathode exhibits high Energy density (E can reach 41.32 Wh kg−1 when P is 800 W kg−1), and the device achieves 82.6% capacity retention after 3000 cycles.

Preparation and Characterization of High-Performance Fe3O4/RGO Anode for Supercapacitors

Preparation and Characterization of High-Performance Fe3O4/RGO Anode for Supercapacitors

Coal tar phenols based hierarchical porous carbon nanospheres for high performance supercapacitor anodes

Hierarchical porous carbon nanospheres (HPCNs) with uniform morphology are highly significant for the application of supercapacitors. In this paper, carbon nanospheres (CNs) are synthesized via Stöber method with small molecular phenols fractionated from low-medium temperature coal tar. The factors behind the morphology of CNs have been investigated during the synthesizing process. It is found that the CNs prepared with a phenol content of 50 wt% and a hydrothermal temperature of 160 °C display the characteristics of an average particle size of 667 nm and a uniform morphology with narrow particle size distribution. Besides, the processing time of CO2-activation are then optimized based on the pore structure and electrochemical properties of CNs. The optimized CNs offer the features of ultra large specific surface area (2812 m2 g−1), hierarchical porous structure and numerous nitrogen and oxygen functional groups. The as-prepared electrode is thus featured by a high specific capacitance of 258 F g−1 at 0.5 A g−1, good rate characteristic and remarkable electrochemical stability (only 0.7% loss after 8000 cycles). The present strategy provides a promising candidate for the high-value utilization of coal tar and the low-cost preparation of electrode materials.

Biomass Derived N-Doped Porous Carbon Made from Reed Straw for an Enhanced Supercapacitor.

Developing advanced carbon materials by utilizing biomass waste has attracted much attention. However, porous carbon electrodes based on the electronic-double-layer-capacitor (EDLC) charge storage mechanism generally presents unsatisfactory capacitance and energy density. Herein, an N-doped carbon material (RSM-0.33-550) was prepared by directly pyrolyzing reed straw and melamine. The micro- and meso-porous structure and the rich active nitrogen functional group offered more ion transfer and faradaic capacitance. X-ray diffraction (XRD), Raman, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) measurements were used to characterize the biomass-derived carbon materials. The prepared RSM-0.33-550 possessed an N content of 6.02% and a specific surface area of 547.1 m2 g-1. Compared with the RSM-0-550 without melamine addition, the RSM-0.33-550 possessed a higher content of active nitrogen (pyridinic-N) in the carbon network, thus presenting an increased number of active sites for charge storage. As the anode for supercapacitors (SCs) in 6 M KOH, RSM-0.33-550 exhibited a capacitance of 202.8 F g-1 at a current density of 1 A g-1. At a higher current density of 20 A g-1, it still retained a capacitance of 158 F g-1. Notably, it delivered excellent stability with capacity retention of 96.3% at 20 A g-1 after 5000 cycles. This work not only offers a new electrode material for SCs, but also gives a new insight into rationally utilizing biomass waste for energy storage.

Fabrication of three-dimensional CuS2@CoNi2S4 core–shell rod-like structures as cathode and thistle-derived carbon as anode for hybrid supercapacitors

The unique 3D rod-like structure has a broad range of potential applications for energy storage. In this work, a three-dimensional core–shell cathode material CuS2@CoNi2S4 and a porous rod-like anode material thistle-derived carbon (TDC) are synthesized for hybrid capacitors. Among them, the cathode CuS2@CoNi2S4 was prepared by straightforward in-situ growth and solvothermal method, showing excellent specific capacitance (1191.6 C g−1 at 1 A g−1), as well as enhanced cyclic stability (85.7% after 10,000 cycles). And the anode TDC was prepared by alkali activation and high temperature calcination, which showed a better double-layer energy storage behavior compared with activated carbon. The assembled hybrid capacitors which benefit from the synergistic effect of cathode core and shell and the porous structure of anode show high energy density (79.5 Wh kg−1 at 800 W kg−1) and long cycle performance (84.5% after 10,000 cycles), indicating that they have great application potential in the domain of supercapacitors. In short, the distinct cathode and anode structural designs offer a novel approach to the synthesis of electrode materials in the realm of energy storage.

Synergy of VN and Fe2O3 Enables High Performance Anodes for Asymmetric Supercapacitors.

Fe2O3 is one of the most common anode materials beyond carbons but suffers from unsatisfactory capacity and poor stability, which are associated with the insufficient utilization of active material and the structural instability caused by the phase transformation. In this work, we report an effective strategy to overcome the above issues through electronic structure optimization by constructing delicately designed Fe2O3@VN core-shell structure. The Fe2O3@VN/CC exhibits a much higher areal capacity of 254.8 mC cm-2 at 5 mA cm-2 (corresponding to 318.5 mF cm-2, or 265.4 F g-1) than the individual VN (48 mC cm-2, or 60 mF cm-2) or Fe2O3/CC (93.36 mC cm-2, or 116.7 mF cm-2), along with enhanced stability. Moreover, the assembled asymmetric supercapacitor devices based on Fe2O3@VN/CC anode and RuO2/CC cathode show a high stack energy density of 0.5 mWh cm-3 at a power density of 12.28 mW cm-3 along with good stability (80% capacitance retention after 14000 cycles at 10 mA cm-2). This work not only establishes the Fe2O3@VN as a high-performance anode material but also suggests a general strategy to enhance the electrochemical performance of traditional anodes that suffer from low capacity (capacitance) and poor stability.

Nitrogen self-doped porous lamellar carbon with superior electrochemical performance

A novel nitrogen self-doped porous lamellar carbon materials were prepared by pyrolysis method, in which metal-free phthalocyanine used as a carbon source, and nanosized SiO2 and SWCNTs used as templates at the same time. The mesoporous structure is contributed by the nanosized SiO2 self-sacrificing template, and the microporous structure is produced by pyrolysis of Pc/SWCNTs. By adjusting the ratio between SWCNTs, nanosized SiO2, and phthalocyanine, the microscopic morphology and the electrochemical performance of porous carbon materials can be regulated. Benefit from its superior pore structure and large specific surface area, the nitrogen self-doped porous lamellar carbon materials show excellent electrochemical performance. When the mass ratio of the three was Pc/SWCNTs/SiO2 = 1:0.05:0.5, the nitrogen self-doped porous lamellar carbon material shows the largest specific capacity of 283.9 F/g at 1 A g−1 as a supercapacitor anode material. And after 5000 cycles, the composite material still maintained a specific capacity of 88.7 %, demonstrating excellent stability. The specific capacity under the two-electrode system of Sample 3 is 260.36 F/g, showing high energy density and power density (36.2 Wh/kg, 1041.2 W/kg). Therefore, this nitrogen self-doped porous lamellar carbon material has potential value as a supercapacitor anode material.