High-efficiency potassium ion hybrid capacitor
Carbon nanosheet with controlled porous and ...
1. Introduction. As the quick growth of electric vehicles (EV) and hybrid electric vehicles (HEV), there is an urgent demand for energy storage devices that can output both high energy and high power [1], [2], [3].As the most common energy storage devices, secondary batteries and capacitors have occupied a dominant position in the …
Porous carbon nanofibers derived from low-softening-point coal …
Potassium ion hybrid capacitors (PIHC) have promising applications in medium and large-scale energy storage systems due to their high energy/power density, abundant potassium resource and low cost. However, the slow kinetics of battery-type anodes originating from the large-size K+ results in a mismatch between the two …
Advanced Electrode Materials for Potassium-Ion Hybrid Capacitors
Potassium-ion hybrid capacitors (PIHCs) combine the advantages of high-energy potassium-ion batteries and high-power supercapacitors, whereas the …
All-Organic Potassium Ion Hybrid Capacitor
A hybrid ion capacitor (HIC), which is a merger of the best properties of a battery and a supercapacitor, has been attracting much interest in recent times. Parallelly, sodium- and potassium-based devices are actively explored beyond lithium chemistry. In an attempt to develop organic material-based energy storage devices, we demonstrate the …
Emerging Potassium-ion Hybrid Capacitors
A strong building block: Potassium-ion capacitors holding the merits of the high energy density of potassium-ion batteries and high output power of supercapacitors are receiving intensive attention owing to …
Nitrogen-doped carbon nanotubes as an anode for a highly robust ...
A potassium ion hybrid capacitor (KIHC) was also designed with the NCNT anode and a commercial active carbon cathode and achieved both a high energy/power density (117.1 W h kg −1 /1713.4 W kg −1) and a long cycle life (2000 cycles at 1 A g −1).
Technological roadmap for potassium-ion hybrid capacitors
Potassium-ion hybrid capacitors (PIHCs), which integrate the high energy density of rechargeable batteries and the high power density of supercapacitors, are considered a game changer for energy storage. This review highlights background information, technical challenges, and improvement strategies of this rising technology in …
Novel Potassium-Ion Hybrid Capacitor Based on an …
This material exhibits an excellent capacity retention of 85% after 1000 cycles. In addition, the NGC//KTO KIC delivers a high energy density of 58.2 Wh kg –1 based on the active mass in both …
[PDF] Homologous Strategy to Construct High-Performance …
A novel and facile homologous strategy is proposed to construct unique multichannel carbon fiber (MCCF)-based electrode materials for potassium-ion hybrid capacitors, which show high energy and power densities together with excellent cycling stability. A novel and facile homologous strategy is proposed to construct unique …
Designing g‐C3N4/N‐Rich Carbon Fiber Composites for High…
Designing g-C 3 N 4 /N-Rich Carbon Fiber Composites for High-Performance Potassium-Ion Hybrid Capacitors. Qing Shen, ... at 0 °C. Moreover, as battery anode for potassium-ion hybrid capacitors (PIHC) device with an active carbon cathode, it delivers ... the capacity of C 3 N 4 @NCNF-600 remains stable with a …
A General Self-Sacrifice Template Strategy to 3D Heteroatom …
Potassium-ion hybrid capacitor (PIHC), as an emerging new energy storage device, has recently been proposed to bridge the gap between high power density of potassium-ion batteries (PIBs) and high energy density of supercapacitor (SC) by integrating complementary merits of the two systems [1,2,3,4].Unfortunately, the …
Carbon cathode with heteroatom doping and ultrahigh surface …
Abstract Potassium-ion hybrid capacitors (PIHCs) are widely regarded as highly promising energy storage devices, due to their exceptional energy density, impressive power density, and abundant potassium resources. Unfortunately, restricted by the inherent capacitive storage mechanism, the carbon cathodes possess a much lower specific …
3D nitrogen-doped framework carbon for high-performance potassium ion ...
Consequently, alternative sodium ion hybrid capacitors (SIHCs) [[9], [10], [11]] and potassium ion hybrid capacitors (PIHCs) [12, 13] have been attracting great interest due to the abundant and ubiquitous sodium/potassium resources, the similar physicochemical properties of sodium/potassium with lithium, as well as the good …
Crystal Facet and Architecture Engineering of Metal Oxide …
Metal oxides are considered as prospective dual-functional anode candidates for potassium ion batteries (PIBs) and hybrid capacitors (PIHCs) because of their abundance and high theoretic gravimetric capacity; however, due to the inherent insulating property of wide band gaps and deficient ion-transport kinetics, metal oxide …
Recent advances in potassium-ion hybrid capacitors: Electrode …
Since non-aqueous PIHCs have advantages of high working voltage, and K + is easier to achieve rapid migration in non-aqueous electrolyte, PIHCs have great …
Technological roadmap for potassium-ion hybrid capacitors
Three essential prerequisites for future applications of PIHC electrode materials include (1) high potassium storage capability needed for enhanced energy …
Realizing high-performance lithium ion hybrid capacitor with a 3D …
1. Introduction. Lithium-ion hybrid capacitors (LIHCs), integrating the advantages of lithium-ion batteries (LIBs) with high energy density and supercapacitors (SCs) with the high power density and long cycling life, have attracted tremendous attention among various electrochemical energy storage (EES) systems [1], [2], [3] monly, …
Defect Engineering of Disordered Carbon Anodes with Ultra-High ...
Potassium-ion hybrid capacitors (PIHCs), in particular, combine the advantages of high power density of capacitors and high energy density of rechargeable batteries [8, 9]. Benefiting from the merits of high conductivity, low cost, and abundant precursors, carbon is inescapably regarded as one of the most promising anode materials …
An Ultrastable Nonaqueous Potassium-Ion Hybrid Capacitor
Potassium-ion hybrid capacitors (PIHCs) show great potential in large-scale energy storage due to the advantages of electrochemical capacitors and …
Recent advances in potassium-ion hybrid capacitors: Electrode …
In recent years, with the unceasing progress of potassium-ion batteries (PIBs), the corresponding potassium-ion hybrid capacitors (PIHCs) have also attracted widespread attention. However, PIHCs still face quite a few problems such as poor cycle life, inferior rate performance and undesirable energy density and power density.
Angewandte Chemie International Edition
Integrating Chemical Pre-Potassiation with Pre-Modulated KF-Rich Electrolyte Interfaces for Dual-Carbon Potassium Ion Hybrid Capacitor. Yong Qian, Yong Qian. ... the initial Coulombic efficiency (CE) of the GDC anode increases from 45.4 % to 84.0 % ... the assembled PIHC achieves a high energy density of 172.5 Wh kg −1 with …
Novel Potassium-Ion Hybrid Capacitor Based on an …
To fill the gap between batteries and supercapacitors requires integration of the following features in a single system: energy density well above that of supercapacitors, cycle life much longer than Li …
Ampere-hour-scale soft-package potassium-ion hybrid capacitors …
In this work, we report 1 Ah soft-package potassium-ion hybrid supercapacitors (PIHCs), which combine the merits of high-energy density of battery-type negative electrodes and high-power...
Homologous Strategy to Construct High-Performance Coupling
Potassium-ion hybrid capacitors (PIHCs) have been considered as promising potentials in mid- to large-scale storage system applications owing to their high energy and power density. However, the process involving the intercalation of K+ into the carbonaceous anode is a sluggish reaction, while the adsorption of anions onto the …
Ternary chalcogenide anodes for high-performance potassium-ion ...
Ternary chalcogenide anodes for high-performance potassium-ion batteries and hybrid capacitors via composition-mediated bond softening and intermediate phase. Author links open overlay panel Wei-Cheng ... ternary Bi 2−x Sb x Se 3 system prepared through a solid solution mechanism with a whole composition range can result …
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