Armoring Black Phosphorus Anode with Stable Metal–Organic-Framework Layer for Hybrid K-Ion Capacitors

Xu, Mengzhu; Feng, Yutong; Chen, Bingjie; Meng, Ruijin; Xia, Mengting; Gu, Feng; Yang, Donglei; Zhang, Chi; Yang, Jinhu

doi:10.1007/s40820-020-00570-7

Cited by 30 publications

(20 citation statements)

References 52 publications

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“…The energy/power density of the ACBC∥SHCS device can be obtained from the Ragone plots in Figure g. As expected, it achieves an impressive energy/power density (135.6 W h kg –1 /17.7 kW kg –1 ), which exceeds those most of the recently reported PIHCs. ,,− More importantly, ACBC∥SHCS exhibits extraordinary recyclability with a capacity retention of 97.8% after 26,000 cycles at 2 A g –1 (the corresponding energy density/power density is 73 W h kg –1 /3516 W kg –1 ) (Figure f). Meanwhile, the fully charged ACBC∥SHCS can light up a “carbon” pattern welded by dozens of LEDs (the inset of Figure g), verifying the potential application foreground for a high-performance energy storage device.…”

Section: Resultsmentioning

confidence: 59%

Ultra-High Sulfur-Doped Hierarchical Porous Hollow Carbon Sphere Anodes Enabling Unprecedented Durable Potassium-Ion Hybrid Capacitors

Qiu

Cheng

et al. 2021

ACS Appl. Mater. Interfaces

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Sulfur doping is a promising path to ameliorate the kinetics of carbon-based anodes. However, the similar electronegativity of sulfur and carbon and the poor thermal stability of sulfur severely restrict the development of high-sulfur-content carbon-based anodes. In this work, ultra-high sulfur-doped hierarchical porous hollow carbon spheres (SHCS) with a sulfur content of 6.8 at % are synthesized via a direct high-temperature sulfur-doping strategy. An SHCS has sulfur bonded to the carbon framework including C–S–C and C–SO x –C, which enlarges its interlayer distance (0.411 nm). In the K half-cell, benefiting from the considerable content and the reasonable architecture of sulfur, the SHCS exhibits significantly improved reversible specific capacity, initial Coulombic efficiency, and cyclability than hierarchical porous hollow carbon spheres without sulfur. Remarkably, the potassium ion hybrid capacitor device fabricated with the SHCS anode achieves excellent energy/power density (135.6 W h kg–1/17.7 kW kg–1) and unprecedented durability over 26,000 cycles at 2 A g–1. This research provides a superior strategy to design high-sulfur-content carbon-based anodes with excellent potassium storage performance.

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Section: Resultsmentioning

confidence: 59%

Ultra-High Sulfur-Doped Hierarchical Porous Hollow Carbon Sphere Anodes Enabling Unprecedented Durable Potassium-Ion Hybrid Capacitors

Qiu

Cheng

et al. 2021

ACS Appl. Mater. Interfaces

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“…A high energy density of 96.4 Wh kg −1 can be achieved at 101.2 W kg −1 . Still, an energy density of 56.1 Wh kg −1 is maintained even at a high power density of 1975.9 W kg −1 , which is comparable to or even exceeds some representative PIHCs and sodium-ion hybrid capacitors [33][34][35][36][37][38][39][40][41]. Moreover, the AC//GO-3 PIHC exhibits a promising cycling stability with a capacity retention of 76.8% after 5000 cycles at a current density of 1 A g −1 (Fig.…”

Section: Extended Application In Potassium Ion Hybridmentioning

confidence: 72%

Oxygen-Containing Functional Groups Regulating the Carbon/Electrolyte Interfacial Properties Toward Enhanced K+ Storage

et al. 2021

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Oxygen-containing functional groups were found to effectively boost the K+ storage performance of carbonaceous materials, however, the mechanism behind the performance enhancement remains unclear. Herein, we report higher rate capability and better long-term cycle performance employing oxygen-doped graphite oxide (GO) as the anode material for potassium ion batteries (PIBs), compared to the raw graphite. The in situ Raman spectroscopy elucidates the adsorption-intercalation hybrid K+ storage mechanism, assigning the capacity enhancement to be mainly correlated with reversible K+ adsorption/desorption at the newly introduced oxygen sites. It is unraveled that the C=O and COOH rather than C-O-C and OH groups contribute to the capacity enhancement. Based on in situ Fourier transform infrared (FT-IR) spectra and in situ electrochemical impedance spectroscopy (EIS), it is found that the oxygen-containing functional groups regulate the components of solid electrolyte interphase (SEI), leading to the formation of highly conductive, intact and robust SEI. Through the systematic investigations, we hereby uncover the K+ storage mechanism of GO-based PIB, and establish a clear relationship between the types/contents of oxygen functional groups and the regulated composition of SEI.

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“…5c). 85 The as-prepared BPNS@ZIF composites showed superior performance than BPNSs when used as the anode for PIHC (Fig. 5d,e).…”

Section: Mof Composites For Mihcsmentioning

confidence: 90%

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

Zhan

Wang

et al. 2022

Chem. Sci.

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Armoring Black Phosphorus Anode with Stable Metal–Organic-Framework Layer for Hybrid K-Ion Capacitors

Cited by 30 publications

References 52 publications

Ultra-High Sulfur-Doped Hierarchical Porous Hollow Carbon Sphere Anodes Enabling Unprecedented Durable Potassium-Ion Hybrid Capacitors

Ultra-High Sulfur-Doped Hierarchical Porous Hollow Carbon Sphere Anodes Enabling Unprecedented Durable Potassium-Ion Hybrid Capacitors

Oxygen-Containing Functional Groups Regulating the Carbon/Electrolyte Interfacial Properties Toward Enhanced K+ Storage

Metal–organic frameworks and their derivatives for metal-ion (Li, Na, K and Zn) hybrid capacitors

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