Switching Optimally Balanced Fe–N Interaction Enables Extremely Stable Energy Storage

Zhao, Zhenzhen; Zhang, Wei; Liu, Miao; Wang, Dong; Wang, Xiyang; Zheng, Lirong; Zou, Xu; Wang, Zizhun; Li, Dabing; Huang, Keke; Zheng, Weitao

doi:10.1002/eem2.12342

Cited by 40 publications

(24 citation statements)

References 92 publications

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“…On the other hand, compared with the previously developed cathodes (metal-organic PBAs and some organic compounds) with stable discharge plateau, our VOPO 4 •2H 2 O cathode delivers a superior speci c capacity as shown in Fig. 2f [30][31][32][33][34][35][36][37][38][39][40] . The combination of stable charge/discharge potential plateau and high speci c capacity makes this material more appealing compared with the various conventional cathode materials.…”

Section: Resultsmentioning

confidence: 90%

Stable Discharge Plateau Induced by Reversible Ammonium Ion Intercalation in Layered VOPO4·2H2O

Ye¹,

Pang²,

Lu³

et al. 2022

Preprint

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The non-metal ammonium (NH4+) ion carrier has attracted tremendous interests for aqueous energy storage owing to the light molar mass and small hydrated ionic size. Nevertheless, the NH4+ storage is severely challenged by that the as-reported cathode materials generally fail to satisfy the requirements on high capacity and stable working potential simultaneously up to date. Herein, we demonstrated that VOPO4∙2H2O with a layered framework and two-dimensional channels can reversibly host NH4+ ion with a high specific capacity of 148.6 mAh g− 1 at 0.1 A g− 1. More importantly, very stable discharge potential plateau at 0.4 V was achieved, which comes from the reversible intercalation/de-intercalation of NH4+ in the interlayer spacing followed by an alternated stacking configuration. We revealed the crystal water molecules in the interlayer of VOPO4 play a critical role in the NH4+ ion storage performance. Theoretical DFT calculations suggest a unique crystal water substitution process by ammonium ion during the intercalation process. Our results realize the first inorganic compound with very stable working voltage for NH4+ storage, and also contributes the fundamental understanding of the intercalation/de-intercalation of NH4+ ions in layered hydrated phosphates for clean energy storage.

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Section: Resultsmentioning

confidence: 90%

Stable Discharge Plateau Induced by Reversible Ammonium Ion Intercalation in Layered VOPO4·2H2O

Ye¹,

Pang²,

Lu³

et al. 2022

Preprint

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“…The existence of mesopores and micropores makes the electrolyte fully contact with the active material, which can provide a shorter Na + transfer route. These behaviors enable the enhanced electrochemical energy storage of NMCN-CS . The surface of the particles can provide good Na + transport channels .…”

Section: Results and Discussionmentioning

confidence: 96%

“…These behaviors enable the enhanced electrochemical energy storage of NMCN-CS. 22 The surface of the particles can provide good Na + transport channels. 23 In Figure S3a,b, we show SEM images of NMCN- CS and NMCN to confirm the uniformity of the synthesized samples.…”

Section: Resultsmentioning

confidence: 99%

Na-Rich Layered Transition Metal Oxides with Core/Shell Structures for Improved Performance of Sodium-Ion Batteries

Wang

et al. 2022

J. Phys. Chem. C

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While P2-type layered transition metal oxides are regarded as potential cathode candidates for sodium-ion batteries because of the high theoretical capacity and a wide operating voltage window, they still suffer from low capacity and sluggish sodium-ion kinetics. Here, we report a Na0.67Mn0.66Co0.17Ni0.17O2 cathode material with a core/shell structure. P2-Na0.67Mn0.66Co0.17Ni0.17O2 has exhibited excellent discharge specific capacity (266 mAh g–1 at 0.1 C and 89 mAh g–1 at 5 C) and ultralong cycle stability, which are among the best state-of-the-art values for Na-based Na-ion batteries. The superior stability results from core/shell structures composed of nanosheets, and the space between the core and shell effectively relieves the volume expansion caused by the deintercalation of sodium ions. Transition metal doping effectively improves the structural distortion caused by the Jahn–Teller effect and provides high sodium mobility, creating higher specific capacity. These findings provide new ideas for the design and development of high-performance sodium-ion battery cathode materials.

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“…Hence, in order to be fully exploited, it is also critical to find suitable cathode materials. At present, V 2 O 5 , TiO 2 , and Prussian blue analogues are the most studied electrode materials. − The crystal structure and electronic structure advantages of VS 2 provide a good choice for the electrode materials of aluminum ions.…”

Section: Energy Storage Mechanism Of Vs2mentioning

confidence: 99%

Perspective of Vanadium Disulfide: A Rising Star Finds Plenty of Room in Single and Multielectron Energy Storage

et al. 2022

Self Cite

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As a typical two-dimensional transition metal sulfide, vanadium disulfide (VS 2 ) is a rising star. Due to its unique layered structure and metal conductivity, VS 2 can be used in applications for electrochemical energy storage. On the basis of analyzing the fundamental characteristics and synthesis approaches, we gain insight into energy storage mechanisms from a perspective of single and multielectron storage in batteries. Finally, the main challenges, opportunities, and the practical application prospects of VS 2 are presented.

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Switching Optimally Balanced Fe–N Interaction Enables Extremely Stable Energy Storage

Cited by 40 publications

References 92 publications

Stable Discharge Plateau Induced by Reversible Ammonium Ion Intercalation in Layered VOPO4·2H2O

Stable Discharge Plateau Induced by Reversible Ammonium Ion Intercalation in Layered VOPO4·2H2O

Na-Rich Layered Transition Metal Oxides with Core/Shell Structures for Improved Performance of Sodium-Ion Batteries

Perspective of Vanadium Disulfide: A Rising Star Finds Plenty of Room in Single and Multielectron Energy Storage

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