Interconnected 3D carbon network with enhanced reaction kinetics and architecture stability for advanced potassium-ion hybrid capacitors

Wang, Bo; Yuan, Fei; Zhang, Di; Yu, Qian; Li, Zhaojin; Wang, Qiujun; Wang, Huan; Wu, Yusheng

doi:10.1039/d1cp04819h

Cited by 8 publications

(7 citation statements)

References 49 publications

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“…Similarly, a self-template method was utilized to prepare an N-doped amorphous porous carbon with a 3D network structure (NPC). [75] This structure facilitates fast electron transfer channels. The high N-doping level (5.84 at%) also enhances conductivity and increases the number of structural defects in the carbon-active host materials.…”

Section: Biomass-derived Carbonmentioning

confidence: 99%

“…The dual‐carbon PIHCs (3DNFC//3DNFAC) could typically work at 0–4.2 V (Figure 9f) and deliver high energy and power densities. Similarly, a self‐template method was utilized to prepare an N‐doped amorphous porous carbon with a 3D network structure (NPC) [75] . This structure facilitates fast electron transfer channels.…”

Section: Anode Materials For Pihcsmentioning

confidence: 99%

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Advanced Electrode Materials for Potassium‐Ion Hybrid Capacitors

Chen

Shen

Xiong

et al. 2023

Batteries & Supercaps

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Potassium‐ion hybrid capacitors (PIHCs) overcome the limitations of potassium‐ion batteries (PIBs) and supercapacitors (SCs) and integrate the advantages of both, including high energy density, high power density, low cost, long cycle life, and stable electrochemical performance. However, the development of PIHCs is hindered by thermodynamic instability and kinetic hysteresis. Additionally, the dynamic mismatch between anode and cathode materials poses an urgent challenge. To this end, many research works related to material development have been dedicated to overcoming the drawbacks. In this review, the energy storage mechanism of PIHCs is briefly introduced. Moreover, the research progress and achievements of anode and cathode materials in recent years are reviewed, including carbon‐based materials, MXenes, transition metal materials, Prussian blue and its analogues. Finally, the challenges and prospects of PIHCs are proposed, together with guiding significant research directions in the future.

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Section: Biomass-derived Carbonmentioning

confidence: 99%

Section: Anode Materials For Pihcsmentioning

confidence: 99%

Advanced Electrode Materials for Potassium‐Ion Hybrid Capacitors

Chen

Shen

Xiong

et al. 2023

Batteries & Supercaps

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“…[21][22][23] Nitrogen doping of amorphous carbon is a representative strategy to fulfill high capacity, long life and an excellent rate carbonaceous anode. [24][25][26][27][28] Currently, template-assisted pyrolysis is usually used to synthesize 3D nitrogen-doped carbon (3D-NDC) anodes. [29][30][31][32] For instance, Yang et al used zinc oxide nanospheres and polyacrylonitrile as the hard template and precursor to prepare an unpyrolyzed electrospun membrane by the electrospinning method, and then obtain the necklace-like porous 3D-NDC (NHC 2 -NH 3 /Ar) by pyrolyzing in NH 3 and Ar atmospheres sequentially.…”

Section: Introductionmentioning

confidence: 99%

A high‐capacity dual‐ion full battery based on nitrogen‐doped carbon nanosphere anode and concentrated electrolyte

Luo

et al. 2023

Battery Energy

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Dual-ion batteries (DIBs) are often criticized for their low discharge capacity and poor cyclic capability despite their inherent high working voltage, low manufacturing cost, and environmental friendliness. To solve these shortcomings, many attempts and efforts have been devoted, but all ended in unsatisfactory results. Herein, a hierarchical porous carbon nanosphere anode with ultrahigh nitrogen doping is developed, which exhibits fast ion transport kinetics and excellent Li + storage capability. Moreover, employing a concentrated electrolyte is expected to bring a series of advantages such as stable SEI for facilitating ion transmission, enhanced cycling performance, high specific capacity, and operation voltage. These advantages endow the assembled full DIBs with excellent performance as a super-high specific discharge capacity of 351 mAh g −1 and can be cycled stably for 1300 cycles with Coulombic efficiency (CE) remaining at 99.5%; a high operating voltage range of 4.95-3.63 V and low self-discharge rate of 2.46% h −1 with stable fast charging-slow discharging performance. Through electrochemical measurements and physical characterizations, the possible working mechanism of the proof-of-concept full battery and the structural variations of electrodes during cycling are investigated. The design strategy of novel battery system in this work will promote the development of high-performance DIBs.

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“…On the other hand, for SIBs, the design of a hollow, honeycomb-like porous carbon structure can effectively shorten the diffusion distance of Na + from the bulk electrolyte to the electrode surface and can exhibit a buffer effect to resist the volume variation during the sodiation/desodiation process. [27][28][29] In addition, the porous structure exposes the doped heteroatoms to the electrolyte, which is helpful for fast and sufficient Na + storage through redox reactions. Therefore, it is believed that combining Se doping and a 3D interconnected pore texture is a reliable strategy to achieve a novel carbon anode incorporating large capacity, rapid sodium storage kinetics, and a long cycling lifespan.…”

Section: Introductionmentioning

confidence: 99%

Surface-driven fast sodium storage enabled by Se-doped honeycomb-like macroporous carbon

Zhang

Ning

Xiong

et al. 2023

Phys. Chem. Chem. Phys.

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Interconnected 3D carbon network with enhanced reaction kinetics and architecture stability for advanced potassium-ion hybrid capacitors

Abstract: Due to their high energy/power densities and ultralong cycle lifespan, potassium-ion hybrid capacitors (PIHCs) have attracted increasing research interest for large-scale energy storage system. However, the kinetics mismatch between battery-type...

Cited by 8 publications

References 49 publications

Advanced Electrode Materials for Potassium‐Ion Hybrid Capacitors

Advanced Electrode Materials for Potassium‐Ion Hybrid Capacitors

A high‐capacity dual‐ion full battery based on nitrogen‐doped carbon nanosphere anode and concentrated electrolyte

Surface-driven fast sodium storage enabled by Se-doped honeycomb-like macroporous carbon

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