Interfacial engineering of hydrated vanadate to promote the fast and highly reversible H+/Zn2+ co-insertion processes for high-performance aqueous rechargeable batteries

Huang, Haijian; Xia, Xue; Yun, Juwei; Huang, Cheng Liang; Li, Deli; Chen, Bingbing; Yang, Zeheng; Zhang, Weixin

doi:10.1016/j.ensm.2022.08.016

Cited by 37 publications

(20 citation statements)

References 52 publications

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“…5G), which exceeds most previously reported aqueous proton and Zn ion cells/capacitors (Fig. 5H and tables S4 and S5) ( 10 , 12 , 15 – 20 , 37 , 45 – 52 , 55 – 60 ). The average CE of Zn/NZVO cells cycled at various rates approaches 100% and reaches 100.32% at 200 A g −1 based on 100% H + insertion (fig.…”

Section: Resultscontrasting

confidence: 45%

“…However, proton batteries require corrosive acidic electrolytes, and their cycle life drops more than two orders of magnitudes in full batteries when combined with solid-state anodes (10,13). In mild electrolytes, proton (de)insertion [with or without metal cation co-(de)insertion] can also occur in inorganic cathodes, e.g., MnO 2 , MoO 3 , and V x O y , but the power densities and cycle stability of these batteries are limited by unidirectional confined proton transfer mechanism (14)(15)(16)(17)(18)(19)(20), e.g., the Grotthuss chain-like transfer, which are far from the practical demands (10 kW kg −1 versus 100 kW kg −1 , 1000 cycles versus 10,000 cycles). It remains unanswered why the proton transfer is confined and much slower than expected inside these inorganic electrodes, and whether it is feasible to fully use the intrinsic mobility of proton to increase the power density and cycle stability of batteries to be comparable to those of supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

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Ultrahigh-rate and ultralong-life aqueous batteries enabled by special pair-dancing proton transfer

et al. 2023

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The design of Faradaic battery electrodes with high rate capability and long cycle life comparable to those of supercapacitors is a grand challenge. Here, we bridge this performance gap by taking advantage of a unique ultrafast proton conduction mechanism in vanadium oxide electrode, developing an aqueous battery with untrahigh rate capability up to 1000 C (400 A g −1 ) and extremely long life of 0.2 million cycles. The mechanism is elucidated by comprehensive experimental and theoretical results. Instead of slow individual Zn 2+ transfer or Grotthuss chain transfer of confined H + , the ultrafast kinetics and excellent cyclic stability are enabled by rapid 3D proton transfer in vanadium oxide via the special pair dance switching between Eigen and Zundel configurations with little constraint and low energy barriers. This work provides insight into developing high-power and long-life electrochemical energy storage devices with nonmetal ion transfer through special pair dance topochemistry dictated by hydrogen bond.

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Section: Resultscontrasting

confidence: 45%

Section: Introductionmentioning

confidence: 99%

Ultrahigh-rate and ultralong-life aqueous batteries enabled by special pair-dancing proton transfer

et al. 2023

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“…As displayed in the high-resolution V 2p spectra of NaVOP (Figure 1e), the signal at 530.8 eV can be assigned to the lattice oxygen (V-O), while the peak located at 531.5 eV corresponds to the crystal H 2 O. [36][37] It is clear that the peak intensity of water molecule in NaVOP is weaker than that of VOP, indicating a low water content because preintercalated Na + replaced part of the interlayer water, which is consistent with the results of FTIR. From the results of V 2p spectrum of VOP (Figure 1f), the peak located at 518 eV is ascribed to V 5+ and the signal at 516.1 eV represents V 4+ .…”

Section: Resultsmentioning

confidence: 97%

Sodium‐Ion Substituted Water Molecule in Layered Vanadyl Phosphate Enhancing Electrochemical Kinetics and Stability of Zinc Ion Storage

Zong

Liu

et al. 2023

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Vanadyl phosphate (VOPO4·2H2O) has been regarded as one of the most promising cathode materials for aqueous Zn‐ion batteries due to its distinct layered structure. However, VOPO4·2H2O has not yet demonstrated the exceptional Zn ion storage performance owing to the structural deterioration during repeated charging/discharging process and poor intrinsic conductivity. In this work, 2D sodium vanadyl phosphate (NaVOPO4·0.83H2O, denoted as NaVOP) is designed as a cathode material for Zn‐ion batteries, in which sodium ions are preinserted into the interlayer, replacing part of water. Benefiting from the in situ surface oxidization, improved electronic conductivity, and increased hydrophobicity, the NaVOP electrode exhibits a high discharge capacity of 187 mAh g−1 at 0.1 A g−1 after activation, excellent rate capability and enhanced cycling performance with 85% capacity retention after 1500 cycles at 1 A g−1. The energy storage mechanism of the NaVOP nanoflakes based on the rapid Zn2+ and H+ intercalation pseudocapacitance are investigated via multiple ex situ characterizations.

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“…This often results in a limited capacity and rapid performance fading. [18] Until now, some pioneering strategies have been demonstrated to inhibit the dissolution of vanadium-based cathode materials in aqueous electrolytes, including intercalating organic polymers/metal ions into the vanadium-based cathodes to enhance structural robustness and relieve the intercalation stress, [19][20][21][22][23] coating the surface of vanadium-based cathodes with a protective layer (e.g., polymers, [24][25][26] metal oxides, [27,28] sulfate, [29] and MXene [30] ) to prevent the structural collapse during cycling, employing "water-in-salt" electrolytes with high salt concentration to decrease the water content, [31][32][33] and tuning the electrolyte solvation structure to reduce water activity and improve the electrode-electrolyte interfacial chemistry. [34][35][36][37] While these strategies can solve the vanadium dissolution problem and improve the cathode stability to some extent, there are still considerable challenges.…”

Section: Introductionmentioning

confidence: 99%

In Situ Induced Core–Shell Carbon‐Encapsulated Amorphous Vanadium Oxide for Ultra‐Long Cycle Life Aqueous Zinc‐Ion Batteries

Fei

Liu

et al. 2023

Adv Funct Materials

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Inevitable dissolution in aqueous electrolytes, intrinsically low electrical conductivity, and sluggish reaction kinetics have significantly hampered the zinc storage performance of vanadium oxide‐based cathode materials. Herein, core–shell N‐doped carbon‐encapsulated amorphous vanadium oxide arrays, prepared via a one‐step nitridation process followed by in situ electrochemical induction, as a highly stable and efficient cathode material for aqueous zinc‐ion batteries (AZIBs) are reported. In this design, the amorphous vanadium oxide core provides unobstructed ions diffusion routes and abundant active sites, while the N‐doped carbon shell can ensure efficient electron transfer and greatly stabilize the vanadium oxide core. The assembled AZIBs exhibit remarkable discharge capacity (0.92 mAh cm−2 at 0.5 mA cm−2), superior rate capability (0.51 mAh cm−2 at 20 mA cm−2), and ultra‐long cycling stability (≈100% capacity retention after 500 cycles at 0.5 mA cm−2 and 97% capacity retention after 10 000 cycles at 20 mA cm−2). The working mechanism is further validated by in situ X‐ray diffraction combined with ex situ tests. Moreover, the fabricated cathode is highly flexible, and the assembled quasi‐solid‐state AZIBs present stable electrochemical performance under large deformations. This work offers insights into the development of high‐performance amorphous vanadium oxide‐based cathodes for AZIBs.

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Interfacial engineering of hydrated vanadate to promote the fast and highly reversible H+/Zn2+ co-insertion processes for high-performance aqueous rechargeable batteries

Cited by 37 publications

References 52 publications

Ultrahigh-rate and ultralong-life aqueous batteries enabled by special pair-dancing proton transfer

Ultrahigh-rate and ultralong-life aqueous batteries enabled by special pair-dancing proton transfer

Sodium‐Ion Substituted Water Molecule in Layered Vanadyl Phosphate Enhancing Electrochemical Kinetics and Stability of Zinc Ion Storage

In Situ Induced Core–Shell Carbon‐Encapsulated Amorphous Vanadium Oxide for Ultra‐Long Cycle Life Aqueous Zinc‐Ion Batteries

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