A Multifunctional Anti-Proton Electrolyte for High-Rate and Super-Stable Aqueous Zn-Vanadium Oxide Battery

Chen, Yangwu; Ma, Dingtao; Ouyang, Kefeng; Yang, Ming; Shen, Sicheng; Wang, Yanyi; Mi, Hongwei; Sun, Lingna; He, Chuanxin; Zhang, Peixin

doi:10.1007/s40820-022-00907-4

Cited by 50 publications

(26 citation statements)

References 49 publications

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“…As shown in Fig. 7 a, the diffraction peak of (003), (510) and (− 711) of VO 2 would shift toward a lower angel in the charge process, and recovery during the discharge process, which indicates the reversible insertion/extraction of zinc ion from VO 2 [ 44 ]. Note that the diffraction peak located at about 33° should be attributed to the formation of Zn 3 (OH) 2 V 2 O 7 ·2H 2 O by-product (PDF: 00-050-0570), which was generated in the discharge process and dissolved in the subsequent charge process [ 45 ].…”

Section: Resultsmentioning

confidence: 99%

3D Artificial Array Interface Engineering Enabling Dendrite-Free Stable Zn Metal Anode

Ruan

Ouyang

et al. 2023

Nano-Micro Lett.

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The ripple effect induced by uncontrollable Zn deposition is considered as the Achilles heel for developing high-performance aqueous Zn-ion batteries. For this problem, this work reports a design concept of 3D artificial array interface engineering to achieve volume stress elimination, preferred orientation growth and dendrite-free stable Zn metal anode. The mechanism of MXene array interface on modulating the growth kinetics and deposition behavior of Zn atoms were firstly disclosed on the multi-scale level, including the in-situ optical microscopy and transient simulation at the mesoscopic scale, in-situ Raman spectroscopy and in-situ X-ray diffraction at the microscopic scale, as well as density functional theory calculation at the atomic scale. As indicated by the electrochemical performance tests, such engineered electrode exhibits the comprehensive enhancements not only in the resistance of corrosion and hydrogen evolution, but also the rate capability and cyclic stability. High-rate performance (20 mA cm−2) and durable cycle lifespan (1350 h at 0.5 mA cm−2, 1500 h at 1 mA cm−2 and 800 h at 5 mA cm−2) can be realized. Moreover, the improvement of rate capability (214.1 mAh g−1 obtained at 10 A g−1) and cyclic stability also can be demonstrated in the case of 3D MXene array@Zn/VO2 battery. Beyond the previous 2D closed interface engineering, this research offers a unique 3D open array interface engineering to stabilize Zn metal anode, the controllable Zn deposition mechanism revealed is also expected to deepen the fundamental of rechargeable batteries including but not limited to aqueous Zn metal batteries.

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Section: Resultsmentioning

confidence: 99%

3D Artificial Array Interface Engineering Enabling Dendrite-Free Stable Zn Metal Anode

Ruan

Ouyang

et al. 2023

Nano-Micro Lett.

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“…The inductive effect of alkyl groups in PEG as electrondonating groups and the stronger hydrogen bond interaction between H 2 O-PEG/OTf − with numerous functional groups helps to weaken the hydrogen bond between free water molecules, which undoubtedly strengthens the OH covalent bond and suppresses the parasitic reaction. [44][45][46] In addition, the incorporation of longchain molecules of PEG extends the electrochemical stability window of the electrolyte and inhibits the water decomposition (Figure S13, Supporting Informa tion). The overlapping profiles in cyclic voltammetry (CV) measurements reveal the highly reversible redox behaviors in Cu-Te cells with a hybrid electrolyte configuration as shown in Figure 5c, and exhibit a pair of redox peaks at 0.411/0.555 V (vs SHE, 0.07/0.22 V vs Cu/Cu 2+ ).…”

Section: Resultsmentioning

confidence: 99%

Initiating Reversible Aqueous Copper–Tellurium Conversion Reaction with High Volumetric Capacity through Electrolyte Engineering

et al. 2023

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Pursuing conversion‐type cathodes with high volumetric capacity that can be used in aqueous environments remains rewarding and challenging. Tellurium (Te) is a promising alternative electrode due to its intrinsic attractive electronic conductivity and high theoretical volumetric capacity yet still to be explored. Herein, the kinetically/thermodynamically co‐dominat copper–tellurium (Cu–Te) alloying phase‐conversion process and corresponding oxidation failure mechanism of tellurium are investigated using in situ synchrotron X‐ray diffraction and comprehensive ex situ characterization techniques. By virtue of the fundamental insights into the tellurium electrode, facile and precise electrolyte engineering (solvated structure modulation or reductive antioxidant addition) is implemented to essentially tackle the dramatic capacity loss in tellurium, affording reversible aqueous Cu–Te conversion reaction with an unprecedented ultrahigh volumetric capacity of up to 3927 mAh cm−3, a flat long discharge plateau (capacity proportion of ≈81%), and an extraordinary level of capacity retention of 80.4% over 2000 cycles at 20 A g−1 of which lifespan thousand‐fold longer than Cu–Te conversion using CuSO4–H2O electrolyte. This work paves a significant avenue for expanding high‐performance conversion‐type cathodes toward energetic aqueous multivalent‐ion batteries.

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“…MD simulation has become a reliable tool for studying molecular and atomic systems under specific environmental conditions in computational work. From the perspective of dynamics, the evolutionary behavior of the system is studied by simulating the motion states of atoms and molecules within a certain time [ 106 , 107 , 108 ]. Inspired by host-guest interactions, Zhi et al reported a strategy for anion trapping in AZIBs.…”

Section: Theoretical Study On Modified Zinc Anodementioning

confidence: 99%

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

Feng

Wang

2023

Molecules

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Aqueous zinc-ion batteries (AZIBs), the favorite of next-generation energy storage devices, are popular among researchers owing to their environmental friendliness, low cost, and safety. However, AZIBs still face problems of low cathode capacity, fast attenuation, slow ion migration rate, and irregular dendrite growth on anodes. In recent years, many researchers have focused on Zn anode modification to restrain dendrite growth. This review introduces the energy storage mechanism and current challenges of AZIBs, and then some modifying strategies for zinc anodes are elucidated from the perspectives of experiments and theoretical calculations. From the experimental point of view, the modification strategy is mainly to construct a dense artificial interface layer or porous framework on the anode surface, with some research teams directly using zinc alloys as anodes. On the other hand, theoretical research is mainly based on adsorption energy, differential charge density, and molecular dynamics. Finally, this paper summarizes the research progress on AZIBs and puts forward some prospects.

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A Multifunctional Anti-Proton Electrolyte for High-Rate and Super-Stable Aqueous Zn-Vanadium Oxide Battery

Cited by 50 publications

References 49 publications

3D Artificial Array Interface Engineering Enabling Dendrite-Free Stable Zn Metal Anode

3D Artificial Array Interface Engineering Enabling Dendrite-Free Stable Zn Metal Anode

Initiating Reversible Aqueous Copper–Tellurium Conversion Reaction with High Volumetric Capacity through Electrolyte Engineering

Progress and Prospect of Zn Anode Modification in Aqueous Zinc-Ion Batteries: Experimental and Theoretical Aspects

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