3D 3C‐SiC/Graphene Hybrid Nanolaminate Films for High‐Performance Supercapacitors

Heuser, Steffen; Yang, Nianjun; Hof, Felix; Schulte, Anna; Schönherr, Holger; Jiang, Xin

doi:10.1002/smll.201801857

Cited by 29 publications

(10 citation statements)

References 36 publications

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“…In addition to 1D composites, microwave synthesis has also been studied in the construction of multidimensional composites. [ 85–88 ] Chen et al [ 89 ] used the microwave‐assisted method to load a few layers of MoS 2 nanosheets on graphene for smart bacterial killing. It is worth noting that MoS 2 /RGO composites prepared by the traditional hydrothermal method did not show a nanosheet structure, and the agglomeration phenomenon was very serious, which was limited by the slow heating rate of the hydrothermal method.…”

Section: Catalytic Optimization Strategies By Microwavementioning

confidence: 99%

Microwave‐Positioning Assembly: Structure and Surface Optimizations for Catalysts

Xiao

Huo²,

Guan³

et al. 2022

Small Structures

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As an innovative synthesis and modification method for nanomaterials, microwave‐positioning assembly exhibits various advantages like low power consumption, oriented growth, and precise doping in preparing and modifying catalysts, mainly owing to the superhot characteristics under microwave irradiation. There are different types of microwave‐positioning assembly mechanisms accounting for the controlling design of the composition, structure, surface chemical state, interface bonding, and some other factors of the catalyst. This review summarizes the recent achievements on the research progress of microwave‐assisted synthesis and modification of new catalysts with the improved performances in various catalytic reactions. The problems and developments of this method in future catalyst design are simply prospected.

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Section: Catalytic Optimization Strategies By Microwavementioning

confidence: 99%

Microwave‐Positioning Assembly: Structure and Surface Optimizations for Catalysts

Xiao

Huo²,

Guan³

et al. 2022

Small Structures

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“…The typical transmission electron microscope (TEM) images (Figure e and inset) showed the N/S‐HCNs mainly consist of amorphous carbon. The Raman spectrum (Figure f) also revealed the disordered characteristic of the N/S‐HCNs with a broader D band at ≈1352 cm −1 and a G band at ≈1561 cm −1 with a high I d / I g value of 3.53 . The nitrogen adsorption–desorption isotherm of the N/S‐HCNs sample (Figure S4, Supporting Information) showed a type‐IV isotherm and a Brunner–Emmet–Teller (BET) specific surface area of 877 m 2 g −1 , suggesting its capability for anions adsorption.…”

mentioning

confidence: 94%

Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor

Cui

Wang

et al. 2019

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conventional batteries. [8][9][10][11][12] However, it is still a big challenge to develop a hybrid device possessing both energy density comparable to lithium-ion batteries and power density and cycling stability comparable to EDLC.Meanwhile, the ever-growing consumption of lithium resources driven by the fast development of portable electronic devices and electric vehicles will eventually lead to a considerable gap between the demand and lithium-based devices, because that the lithium reserves on the earth are quite limited. [13][14][15][16][17] Alternatively, the sodium-ion based energy storage devices, especially hybrid supercapacitors were considered as promising alternatives to lithium-ion based electrochemical devices due to its abundant storage. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] In the past years, several sodium-ion based hybrid supercapacitors have been developed with different configurations. [33][34][35][36][37][38][39][40][41][42][43][44][45] For example, Yamada and co-workers reported a high-performance sodium-ion capacitor using Ti 2 CT x as anode and Na 2 Fe 2 (SO 4 ) 3 as the cathode, [46] and the device demonstrated high rate capacities of 90 and 40 mAh g −1 at 1.0 and 5.0 A g −1 , respectively, good cycling stability of 96% capacity retention after 100 cycles at 0.6 A g −1 , high energy density of 260 Wh kg −1 at 1.4 kW kg −1 (based on the weight of Ti 2 CT x anode). Yu and co-workers reported a flexible quasi-solid-state sodium-ion capacitor using urchinlike Na 2 Ti 3 O 7 anode, peanut shell derived carbon cathode, and sodium ion conducting gel polymer electrolyte. [47] This SIC exhibited superior electrochemical performance including high energy density of 111.2 Wh kg −1 at 800 W kg −1 (calculated on the total mass of both electrodes), and long cycling stability with 86% capacity retention after 3000 cycles. However, there is still much room to improve the energy densities of sodium-ion capacitors (SICs) to meet with the application requirements.Involving the pseudocapacitance reaction to the EDLC electrode is a possible strategy to further improve the energy density of hybrid supercapacitors because the pseudocapacitance reaction features the abilities to achieve additional capacity than Helmholtz double layer adsorption reaction and meanwhile keep fast reaction kinetics, which has been previously utilized in hybrid capacitors. [48][49][50][51][52][53][54] Herein, we reported a novel SIC based on N and S codoped hollow carbon nanobelts (N/S-HCNs) cathode and tin foil anode in a carbonate Sodium-ion capacitors (SICs) have attracted enormous attention due to their high energy density and high power density. In this work, N and S codoped hollow carbon nanobelts (N/S-HCNs) are synthesized by a self-templated method. The as-synthesized carbon nanobelts exhibit excellent performance in pseudocapacitance and electric double layer anions adsorption. After pairing the N/S-HCNs cathode with a tin foil anode in a carbonate electrolyte, the obtained SIC achieves a high spec...

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“…Such a particular trait that belongs to a supercapacitor further optimizes the rate capability of a PIB with high reaction dynamics. [21,22] Among various kinds of porous carbon materials, carbide-derived carbon (CDC) that appears as a new category in recent decades is expected to be a very promising anode for the construction of high-performance PIBs. This is because CDC exhibits a high specific surface area (SSA) and a well-controlled pore structure (e.g., size, uniformity/distribution of these pores).…”

Section: Introductionmentioning

confidence: 99%

Toward High‐Performance Capacitive Potassium‐Ion Storage: A Superior Anode Material from Silicon Carbide‐Derived Carbon with a Well‐Developed Pore Structure

Zhang

et al. 2020

Adv Funct Materials

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Potassium-ion battery (PIB) using a carbon-based anode is an ideal device for electrochemical energy storage. However, the large atomic size of potassium ions inevitably leads to huge volume expansion and the collapse of anodes, resulting in the severe capacity fading during the long-term cycling. Herein, silicon carbide-derived carbon (SiC-CDC) with a controllable pore structure is synthesized with a concise etching approach. It exhibits a maximum capacity of 284.8 mA h g −1 at a current density of 0.1 A g −1 after 200 cycles as well as a highly reversible capacity of 197.3 mA h g −1 at a current density of 1.0 A g −1 even after 1000 cycles. A mixed mechanism of the potassium storage is proposed for this prominent performance. The interconnected pore structure with a high proportion of mesopore volume provides abundant active sites for the adsorption of potassium ions, a shortened electrolyte penetration path, and enlarged accumulation space for potassium ions, eventually leading to facilitated capacitive potassium storage inside this SiC-CDC electrode. This work provides fundamental theories of designing pore structures for boosting capacitive potassium storage and unveils CDC-based materials as the prospective anodes for high-performance PIBs.

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3D 3C‐SiC/Graphene Hybrid Nanolaminate Films for High‐Performance Supercapacitors

Cited by 29 publications

References 36 publications

Microwave‐Positioning Assembly: Structure and Surface Optimizations for Catalysts

Microwave‐Positioning Assembly: Structure and Surface Optimizations for Catalysts

Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor

Toward High‐Performance Capacitive Potassium‐Ion Storage: A Superior Anode Material from Silicon Carbide‐Derived Carbon with a Well‐Developed Pore Structure

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