N, P, and S co-doped 3D porous carbon-architectured cathode for high-performance Zn-ion hybrid capacitors

Shang, Kezheng; Liu, Yangjié; Cai, Pingwei; Li, Kangkang; Wen, Zhenhai

doi:10.1039/d2ta00202g

Cited by 74 publications

(27 citation statements)

References 48 publications

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“…Additionally, Barrett−Joyner−Halenda (BJH) curves of VNQDs@PCNFs-N/F indicate a hierarchical micromeso− macro porous structure with pore size distribution centered from 1 to 100 nm (Figure S8b). 35 Such a large specific surface area and hierarchical micromeso−macro porous feature of VNQDs@PCNFs-N/F not only facilitate the electrolyte penetration but also boost ionic/electron transfer along with buffering volume change, thus well improving electrochemical performance of the energy storage. Density functional theory (DFT) calculations were first performed to investigate the significance of introducing VN and heteroatom N/F toward extrinsic pseudocapacitive Na + storage.…”

Section: Resultsmentioning

confidence: 99%

Pseudocapacitive Vanadium Nitride Quantum Dots Modified One-Dimensional Carbon Cages Enable Highly Kinetics-Compatible Sodium Ion Capacitors

Yuan

Qiu

et al. 2022

ACS Nano

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The kinetics incompatibility between battery-type anode and capacitive-type cathode for sodium ion hybrid capacitors (SIHCs) seriously hinders their overall performance output. Herein, we construct a SIHCs device by coupling with quantum grade vanadium nitride (VN) nanodots anchored in one-dimensional N/F co-doped carbon nanofiber cages hybrids (VNQDs@PCNFs-N/F) as the freestanding anode and the corresponding activated N/F co-doped carbon nanofiber cages (APCNFs-N/F) as cathode. The strong coupling of VN quantum dots with N/F co-doped 1D conductive carbon cages effectively facilitates the ion/electron transport and intercalation–conversion–deintercalation reactions, ensuring fast sodium storage to surmount aforesaid kinetics incompatibility. Additionally, density functional theory calculations cogently manifest that the abundant active sites in the VNQDs@PCNFs-N/F configuration boost the Na+ adsorption/reaction activity well which will promote both “intrinsic” and “extrinsic” pseudocapacitance and further improve anode kinetics. Consequently, the assembled SIHCs device can achieve high energy densities of 157.1 and 95.0 Wh kg–1 at power densities of 198.8 and 9100.5 W kg–1, respectively, with an ultralong cycling life over 8000 cycles. This work further verified the feasibility of kinetics-compatible electrode design strategy toward metal ion hybrid capacitors.

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Section: Resultsmentioning

confidence: 99%

Pseudocapacitive Vanadium Nitride Quantum Dots Modified One-Dimensional Carbon Cages Enable Highly Kinetics-Compatible Sodium Ion Capacitors

Yuan

Qiu

et al. 2022

ACS Nano

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“… The Raman spectrum of NPHC in Figure S9b displays two distinct characteristic diffraction peaks at 1340 and 1595 cm –1 , which represent the defective graphite microstructure (D-band) and graphite carbon phase (G-band), respectively. , It can be found that the NPHC exhibits a relatively stronger D-band signal than that of the G-band, and the intensity ratio ( I D / I G ) is calculated to be 1.15. The result proves that the NPHC is mainly made of abundant disordered carbon structure with some ordered graphitic feature. , It can be seen from the SEM image that the NPHC exhibits large-area wrinkled nanosheets morphology (Figure S10a). The elemental distribution of NPHC in Figure S10b shows that the C, O, N, and P elements are evenly distributed in NHPC.…”

Section: Resultsmentioning

confidence: 83%

“…The result proves that the NPHC is mainly made of abundant disordered carbon structure with some ordered graphitic feature. 41,42 It can be seen from the SEM image that the NPHC exhibits large-area wrinkled nanosheets morphology (Figure S10a). The elemental distribution of NPHC in Figure S10b shows that the C, O, N, and P elements are evenly distributed in NHPC.…”

Section: Resultsmentioning

confidence: 99%

Alleviating Zn Dendrites by Growth of Ultrafine ZnO Nanowire Arrays through Horizontal Anodizing for High-Capacity, Long-Life Zn Ion Capacitors

Peng

Wang

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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Zn ion capacitors (ZICs) composed of a carbon-based cathode and a Zn anode are one of the most promising energy storage devices due to their inherent safety and high-power output. However, their poor cycling stability originating from the Zn dendrites’ formation and low energy density limited by insufficient activated carbon properties remain major challenges for development of high-performance ZICs. Hence, we constructed a facile and effective strategy to alleviate “edge effects” and suppress Zn dendrites by growing ZnO nanowire arrays on Zn foil (ZnO@Zn) using a horizontally potentiostatic anodizing technique. The electrochemical characterizations and in situ optical microscopy observation revealed that the introduction of ZnO nanowire arrays can significantly suppress the growth of Zn dendrites and enhance the cycling stability of the Zn anode. The superfine and interlaced ZnO nanowire arrays provide uniform nucleation sites and high electrical conductivity for the Zn metal anode, reducing the local current density and promoting the rapid diffusion and migration of Zn ions on the Zn anode surface. As a result, the ZnO@Zn electrode has a very low nucleation overpotential and excellent cycle stability, far superior to the bare Zn anode. Furthermore, a ZnO@Zn//NPHC ZIC assembled with an N, P-codoped hard carbon (NPHC) cathode delivers a high specific capacity of 110.3 mAh g–1 at 0.1 A g–1 and achieves outstanding cycling stability with 90% capacity retention together with ∼100% Coulombic efficiency after 20000 cycles.

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“…Moreover, the nanostructured design and morphological control of nanocarbons boost the effective electrode/ electrolyte contact and reduce the ion transport distance, further exposing more active sites for Zn-ion storage. To this end, various structurally engineered PCs, such as hollow carbon nanospheres from MnO 2 nanoflower templates [9], carbon nanowires from MnO 2 nanowire templates [10], three-dimensional PCs from SiO 2 templates [11], K 2 CO 3 -activated PCs [12], ZnO-activated PCs [2], and a series of alkali-metal-activated PCs [13], have been reported as cathodes for ZHSCs. However, the fabrication processes are generally based on the indirect carbonization of precursors with demands for activations and templates.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the P/B and B/S codoped PCs have been synergistically designed to improve the ZHSC performance [12,19]. Furthermore, multiple N/P/S-doped carbons exhibited a high capacity of 104.7 mA h g −1 at 0.1 A g −1 [11]. Most heteroatom-doped PCs for ZHSCs are obtained by the uneven combination between carbon resources and dopants, resulting in uncontrollable regulation procedures, arbitrary distribution of heteroatoms, and difficulties in understanding specific heteroatom configurations with Zn-ion storage capability [21].…”

Section: Introductionmentioning

confidence: 99%

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Liu

Feng

et al. 2022

Sci. China Mater.

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Aqueous Zn-ion hybrid supercapacitors (ZHSCs) hold great potential as next-generation energy storage devices due to their low cost, excellent rate capability, long cycling life, and high safety. Heteroatom-doped hierarchical porous carbons (HD-HPCs) with integrated high specific surface area, multiscale pores, and abundant defects have been regarded as promising cathode materials for ZHSCs. However, the in situ architecture of HD-HPCs with these multiple advantages via a sustainable and controllable method remains an arduous challenge. Herein, a novel molecular engineering strategy was proposed for the in situ construction of N/P/O-doped HD-HPCs via the direct carbonization of multiple-heteroatom-rich hypermolecules. Such a strategy has multiple advantages, including the exclusion of pore-making techniques, activation agents, templates, and complicated and hazard washing processes, demonstrating its green and sustainable properties. The highly active multiple-heteroatom-rich hypermolecular precursors contributed to the formation of abundant micro/mesopores due to the self-abscission of heteroatoms and heteroatom-contiguous carbon atoms at high carbonization temperatures. Consequently, these active structural/compositional features endowed the optimal cathodes with outstanding storage capacities of 139.2 and 88.9 mA h g −1 at 0.5 and 20 A g −1 for aqueous ZHSCs, respectively. They also delivered a superior storage performance in quasi-solid ZHSCs (QS-ZHSCs) with a high specific capacity of 111.5 mA h g −1 at 0.5 A g −1 . Superior energy/power densities and long cycling stability were also achieved for aqueous and QS-ZHSCs. The theoretical calculation confirmed the synergetic effects of multiple-atom doping on enhancing the electronic conductivity and reducing the energy barrier between Zn ions and carbon, which promote the Zn-ion adsorption capability. These findings shed fresh light on the straightforward manufacture of superior HD-HPCs for electrochemical energy storage.

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N, P, and S co-doped 3D porous carbon-architectured cathode for high-performance Zn-ion hybrid capacitors

Abstract: Zinc (Zn) ion hybrid capacitors (ZIHCs) are promising energy storage devices by integrating the merits of high-capacity Zn-ion battery and high-power supercapacitor. Their practical application yet remains challenge due to...

Cited by 74 publications

References 48 publications

Pseudocapacitive Vanadium Nitride Quantum Dots Modified One-Dimensional Carbon Cages Enable Highly Kinetics-Compatible Sodium Ion Capacitors

Pseudocapacitive Vanadium Nitride Quantum Dots Modified One-Dimensional Carbon Cages Enable Highly Kinetics-Compatible Sodium Ion Capacitors

Alleviating Zn Dendrites by Growth of Ultrafine ZnO Nanowire Arrays through Horizontal Anodizing for High-Capacity, Long-Life Zn Ion Capacitors

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

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