Pseudocapacitance-dominated zinc storage enabled by nitrogen-doped carbon stabilized amorphous vanadyl phosphate

Ou, Linna; Liu, Zhexuan; Zhou, Yifan; Ou, Huihuang; Zhu, Jue; Cao, Xinxin; Fang, Guozhao; Zhou, Jiang

doi:10.1016/j.cej.2021.131868

Cited by 27 publications

(18 citation statements)

References 41 publications

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“…The specific capacitance of TG‐VOP (48 h) cathode maintained about 86.4% of the highest value after 2500 cycles, which was larger than 80.2% for the TG‐VOP (48 h, 800 cycles) and 64.9% for the VOP (500 cycles) using Zn(Tr) 2 electrolytes (Figure 4d). This value also surpasses many of the recently reported polyanion compound cathodes, such as bilayer‐VOPO 4 ·2H 2 O (2000 cycles, 76.8%), [ 29 ] Zn 0.4 VOPO 4 ·0.8H 2 O (1000 cycles, 71.9%), [ 41 ] VOPO 4 /NC (1000 cycles, 141.3 mAh g −1 ), [ 17 ] Li 3 V 2 (PO 4 ) 3 (1000 cycles, ≈88.7%), [ 46 ] and VOPO 4 · x H 2 O (500 cycles, ≈85.7%). [ 15 ] Furthermore, the capacity and cycle life of the designed Zn/TG‐VOP battery were even comparable to those of the novel Zn/S, Te/MnO 2 and Te/Ni(OH) 2 , Zn–Te batteries.…”

Section: Resultsmentioning

confidence: 61%

“…[14,15] Nevertheless, its capacity output (<170 mAh g −1 ) and cycle stability (<1000 cycles) are far less than those of vanadium oxides because of sluggish electrode kinetics and severe structural degradation. [14][15][16][17][18] To address these limitations, most previous works have focused on how to manipulate the interlayer spacing of 2D materials by utilizing the interlayer chemistry principle. [9,[19][20][21][22] Amongst them, numerous organic molecules such as phenylamine, [19,22,23] polypyrrole, and ethylenediamine [24,25] as intercalants have much more peculiarities for stabilizing host structure and adjusting the d-interspace than small metal ions (e.g., Li + , Na + , and K + ) and water molecules.…”

Section: Doi: 101002/adma202203920mentioning

confidence: 99%

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Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol‐Based Organic–Inorganic Cathode in a Water–Organic Electrolyte

Lin

Zhao³

et al. 2022

Advanced Materials

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Expanding interspace and introducing vacancies are desired to promote the mobility of Zn ions and unlock the inactive sites of layered cathodes. However, this two‐point modulation has not yet been achieved simultaneously in vanadium phosphate. Here, a strategy is proposed for fabricating an alcohol‐based organic–inorganic hybrid material, VO1−xPO4·0.56C6H14O4, to realize the conjoint modulation of the d‐interspace and oxygen vacancies. Peculiar triglycol molecules with an inclined orientation in the interlayer also boost the improvement in the conversion rate of V5+ to V4+ and the intensity of the PO bond. Their synergism can ensure steerable adjustment for intercalation kinetics and electron transport, as well as realize high chemical reactivity and redox‐center optimization, leading to at least 200% increase in capacity. Using a water–organic electrolyte, the designed Zn‐ion batteries with an ultrahigh‐rate profile deliver a long‐term durability (fivefold greater than pristine material) and an excellent energy density of ≈142 Wh kg−1 (including masses of cathode and anode), thereby substantially outstripping most of the recently reported state‐of‐the‐art zinc‐ion batteries. This work proves the feasibility to realize the two‐point modulation by using organic intercalants for exploiting high‐performance new 2D materials.

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Section: Resultsmentioning

confidence: 61%

Section: Doi: 101002/adma202203920mentioning

confidence: 99%

Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol‐Based Organic–Inorganic Cathode in a Water–Organic Electrolyte

Lin

Zhao³

et al. 2022

Advanced Materials

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“…Due to the decrease of crystallinity, there is no obvious characteristic peak in the XRD pattern after carbonization. 42 The Raman spectra of the VOPO 4 /C samples (Figure 2b) exhibit two prominent peaks at 1270 cm −1 (D band) and 1500 cm −1 (G band). The D band is ascribed to disordered carbon and the G band is ascribed to graphitized carbon, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…After polyaniline was inserted, the crystal structure of the cathode material remained unchanged. Due to the decrease of crystallinity, there is no obvious characteristic peak in the XRD pattern after carbonization . The Raman spectra of the VOPO 4 /C samples (Figure b) exhibit two prominent peaks at 1270 cm –1 (D band) and 1500 cm –1 (G band).…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Carbon Modification Enhancement for Vanadium-Based Phosphates as an Advanced Cathode of Zinc-Ion Batteries

Liu

Lü

et al. 2022

ACS Appl. Mater. Interfaces

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In recent years, rechargeable aqueous zinc-ion batteries (ZIBs) have shown extraordinary potential due to their safety, nontoxicity, sustainable zinc resources, and low price. However, the lack of suitable cathode materials hinders the development of ZIBs. Recently, layered phosphates have been widely used as cathode materials. As one typical phosphate cathode, vanadium oxyphosphate (VOPO4) has inherently low electronic conductivity and structural dissolution in electrochemical reactions, limiting its development. To solve these problems, VOPO4/C is prepared by combining multifunctional carbon material with a VOPO4 interlayer and an external surface, which not only improves the electronic conductivity of the composite material but also effectively inhibits the dissolution of VOPO4 in the electrolyte. As a result, the prepared VOPO4/C could deliver a reversible capacity of 140 mA h g–1 at a current density of 100 mA g–1. Furthermore, the rate performance of the VOPO4/C composite has also been improved significantly. In the process of charging and discharging, zinc ions in the composite show perfect intercalate and deintercalate performance.

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“…[27][28][29] Pseudocapacitors, that involve indistinguishable Faradic and non-Faradic reactions possess renowned electrode materials that mainly include conducting polymers such as (poly 3, 4-ethylenedioxythiophene PEDOT, polythiophene PT, and polyaniline PANi), metal oxides (MOs), and hydroxides such as MnO 2 , Sn(OH) 2 , RuO 2 , and Cu(OH) 2 respectively. [30][31][32][33][34][35][36] In general, the promising electroactive materials that have been employed for SCs are metal phosphates, phosphides, oxides, hydroxides, MXenes, and metal organic frameworks (MOFs). [37][38][39][40][41][42][43][44] Moreover, carbonaceous materials (CMs), 40 conducting polymers 45 and transition metal oxides (TMOs) 46 have also been primarily utilized for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Recent progress of battery grade metal sulfides for hybrid energy storage devices

Iqbal

Abbasi

Alam

2021

Intl J of Energy Research

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Summary The modern technology‐based hybrid energy storage devices (HESDs) in recent times, due to excelling collective features of secondary batteries (SBs) and supercapacitors, have attained the remarkable attention of scientific community throughout the globe. The metal sulfides and their composites among all electrode materials owing to their viable electrochemical characteristics have been recognized as important contender for hybrid devices. In this regard, our work reports the recently utilized single, binary, and ternary composites of metal sulfides as battery grade electrode material for HESDs. Along with synthesis routes including hydrothermal, electrodeposition, solvothermal, microwave, and sonochemical process. Apart from this, different electrochemical characterizations such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge discharge (GCD) have been conferred in this review. Furthermore, the electrochemical performance of sulfide‐based HESDs has compared and summarized. The high energy outcomes, current challenges, and future prospects of metal sulfides as electrode material have also been discussed.

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Pseudocapacitance-dominated zinc storage enabled by nitrogen-doped carbon stabilized amorphous vanadyl phosphate

Cited by 27 publications

References 41 publications

Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol‐Based Organic–Inorganic Cathode in a Water–Organic Electrolyte

Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol‐Based Organic–Inorganic Cathode in a Water–Organic Electrolyte

Multifunctional Carbon Modification Enhancement for Vanadium-Based Phosphates as an Advanced Cathode of Zinc-Ion Batteries

Recent progress of battery grade metal sulfides for hybrid energy storage devices

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