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The role of porous potassium ion capacitors

Porous current collector enables carbon superior electrochemical

Abstract The current collector is an indispensable component in potassium-ion hybrid capacitors, which not only provides mechanical support to load electrode materials, but

Direct Structure–Performance Comparison of

A hybrid ion capacitor (HIC) based on potassium ions (K +) is a new high-power intermediate energy device that may occupy a unique position on the Ragone chart space. Here, a direct performance comparison of a

Role of porosity and diffusion coefficient in porous

Porous electrodes are fast emerging as essential components for next-generation supercapacitors. Using porous structures of Co 3 O 4, Mn 3 O 4, α-Fe 2 O 3, and carbon, their advantages over the solid counterpart is

High-performance potassium ion capacitors enabled by

As the capacitance is generally related to the surface area of electrode, achieving micropores-dominated porous carbon with large ion accessible surface area is a key

Phosphorus and Oxygen Dual‐Doped Porous Carbon

Porous current collector enables carbon superior electrochemical

The potassium-ion capacitor assembled using PCu exhibits an excellent energy/power density of 86.1 Wh·kg−1 and 4000 W·kg−1, respectively. This work will boost

Phosphorus and Oxygen Dual‐Doped Porous Carbon Spheres

As a proof of concept, a potassium-ion hybrid capacitor is assembled by a dual-doped porous carbon sphere anode and an activated carbon cathode. It shows superior

Oxygen-rich engineering of lignin-derived porous carbons

Download Citation | On Dec 1, 2024, Xueyi Liang and others published Oxygen-rich engineering of lignin-derived porous carbons through potassium activation for zinc ion hybrid capacitors |

A high-performance potassium-ion capacitor based on a porous

The obtained porous carbon has an extremely high nitrogen BET SSA value of 2947 m 2 /g and a well-controlled pore size ranging from 1 nm to 3 nm. Such porous carbon

Revealing the Charge Storage Mechanism in Porous Carbon to

Furthermore, the assembled potassium-ion hybrid capacitor realizes an impressive energy density of 151.7 Wh kg-1 at a power density of 398 W kg-1. The proposed work not only deepens the

Direct Structure–Performance Comparison of All‐Carbon Potassium

A hybrid ion capacitor (HIC) based on potassium ions (K +) is a new high-power intermediate energy device that may occupy a unique position on the Ragone chart space.

Revealing the Charge Storage Mechanism in Porous Carbon to

Furthermore, the assembled potassium-ion hybrid capacitor realizes an impressive energy density of 151.7 Wh kg −1 at a power density of 398 W kg −1. The

Technological roadmap for potassium-ion hybrid capacitors

Potassium-ion hybrid capacitors (PIHCs) are in principle advantageous over the traditional metal-ion hybrid capacitors (MIHCs) in terms of low cost, safety, and reliability,

Recent advances in the application of carbon-based electrode

Building a porous structure can enhance the ion adsorption–desorption capacity of electrolytes, which plays an important role in enhancing capacitance and facilitating ion

High-performance potassium ion capacitors enabled by

Potassium ion hybrid capacitors (PIHCs) have drawn considerable attention due to the fact that they can combine the merits of high energy density of potassium ion batteries

Role of porosity and diffusion coefficient in porous electrode

Porous electrodes are fast emerging as essential components for next-generation supercapacitors. Using porous structures of Co 3 O 4, Mn 3 O 4, α-Fe 2 O 3, and

Revealing the Charge Storage Mechanism in Porous

Furthermore, the assembled potassium-ion hybrid capacitor realizes an impressive energy density of 151.7 Wh kg −1 at a power density of 398 W kg −1. The proposed work not only deepens the understanding of

Porous Carbon Materials Prepared from Potassium Citrate for Zinc–Ion

Slow carbonization (SC) and fast carbonization (FC) methods were applied and compared during the preparation of carbon materials using potassium citrate as raw

Kinetically boosted potassium ion storage capability of 1D

Semantic Scholar extracted view of "Kinetically boosted potassium ion storage capability of 1D K2Ti6O13 nanobelts by 3D porous carbon framework for fiber-shaped

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

First prototypes of hybrid potassium-ion capacitor (KIC): An

Semantic Scholar extracted view of "First prototypes of hybrid potassium-ion capacitor (KIC): An innovative, cost-effective energy storage technology for transportation

Porous MXenes enable high performance potassium ion capacitors

We further investigate their electrochemical performance and charge storage mechanism for potassium ion capacitor applications. The dual acid/alkali treated product (K–V

Redox-active electrolytes as a viable approach for the one-step

A hybrid potassium-ion capacitor also provided an insufficient amount of energy (60 Wh kg −1) due to the destruction of the graphite structure from large potassium ions. The

Large-scale doping-engineering enables boron/nitrogen dual-doped porous

Abstract Zinc ion capacitors (ZICs) have drawn increasing interest in energy storage devices because of their economic benefits, high safety, and long cycling life.

The role of porous potassium ion capacitors [PDF]

6 FAQs about [The role of porous potassium ion capacitors]

What is a potassium-ion hybrid capacitor?

As a proof of concept, a potassium-ion hybrid capacitor is assembled by a dual-doped porous carbon sphere anode and an activated carbon cathode. It shows superior electrochemical performance, which opens a new avenue to innovative potassium-based energy storage technology. The authors declare no conflict of interest.

What is the power density of a potassium-ion capacitor?

The potassium-ion capacitor assembled using PCu exhibits an excellent energy/power density of 86.1 Wh·kg −1 and 4000 W·kg −1, respectively. This work will boost the rational design and provide an effective strategy to improve the performance of potassium-ion capacitors.

How does a current collector affect a potassium ion capacitor?

The current collector is an indispensable component in potassium-ion capacitor, which greatly affects the electrochemical performance. At the same time, the current collector also affects the pre-potassium process of the potassium ion capacitor.

Can potassium ion capacitors be used as energy storage devices?

Further, we demonstrate a potassium ion capacitor that combines K–V 2 C anode and K x MnFe (CN) 6 cathode. The full cells could achieve the energy densities of 145, and 30.55 Wh kg −1 at the power densities of 112.6 and 3026 W kg −1, respectively, suggesting the great potential of our material in practical energy storage devices.

Which potassium ion capacitor has the highest energy output?

More encouragingly, the potassium-ion capacitor assembled using porous copper foil delivers the highest energy output of ~ 86.1 Wh·kg −1 at 100 W·kg −1 and excellent cycling performance. Liang HJ, Gu ZY, Zheng XY, Li WH, Zhu LY, Sun ZH, Meng YF, Yu HY, Hou XK, Wu XL.

What is the best anode for potassium ion capacitors?

Nitrogen and phosphorus dual-doped multilayer graphene as universal anode for full carbon-based lithium and potassium ion capacitors Sodium-ion hybrid capacitor of high power and energy density Fast potassium storage in hierarchical Ca 0.5 Ti 2 (PO 4) 3 @C microspheres enabling high-performance potassium-ion capacitors Adv. Funct.

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