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Aqueous zinc-ion batteries (ZIBs) have attracted burgeoning attention and emerged as prospective alternatives for scalable energy storage applications due to their unique merits such as high volumetric capacity, low cost, environmentally friendly, and reliable safety. Nevertheless, current ZIBs still suffer from some thorny issues, including low intrinsic electron conductivity, poor reversibility, zinc anode dendrites, and side reactions. Herein, conductive polyaniline (PANI) is intercalated as a pillar into the hydrated VO (PAVO) to stabilize the structure of the cathode material. Meanwhile, graphene oxide (GO) was modified onto the glass fiber (GF) membrane through simple electrospinning and laser reduction methods to inhibit dendrite growth. As a result, the prepared cells present excellent electrochemical performance with enhanced specific capacity (362 mAh g at 0.1 A g), significant rate capability (280 mAh g at 10 A g), and admirable cycling stability (74% capacity retention after 4800 cycles at 5 A g). These findings provide key insights into the development of high-performance zinc-ion batteries.
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http://dx.doi.org/10.3390/molecules29133147 | DOI Listing |
Nano Lett
September 2025
School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei 430070, China.
Aqueous zinc-ion batteries (AZIBs) represent an environmentally benign energy storage alternative. However, the VO cathode suffers from limited cycling stability and rate capability due to structural instability, vanadium dissolution, and high desolvation energy caused by the large size of [Zn(HO)] deintercalation. Address these issues, we introduce a VO/VOPO (VOP) heterostructure that that reinforces the crystal structure to suppress vanadium dissolution and establishes a hydrophilic interface reducing the desolvation energy of Zn.
View Article and Find Full Text PDFChem Commun (Camb)
September 2025
Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China.
In this work, a series of potassium ion (K) pre-intercalated sodium hydrogen vanadates (K-HNVO) are prepared through a facile route. The introduction of K modulates the microstructure of the pristine sodium metavanadate and increases the interlayer spacing, thereby resulting in improved charge transport kinetics. Moreover, the pillaring effect of K enhances the structural stability of the pristine material.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China.
Economically viable and biologically compatible amino acids demonstrate significant potential as electrolyte microstructure modifiers in aqueous zinc-ion batteries (AZIBs). Compared to polar amino acids, nonpolar amino acids simultaneously own zincophilicity and hydrophobicity, showing great potential in the industrial application of AZIBs. However, nonpolar amino acids have been comparatively understudied in existing research investigations.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China.
Solid-state electrolytes (SSEs) are being extensively researched as replacements for liquid electrolytes in future batteries. Despite significant advancements, there are still challenges in using SSEs, particularly in extreme conditions. This study presents a hydrated metal-organic ionic cocrystal (HMIC) solid-state ion conductor with a solvent-assisted ion transport mechanism suitable for extreme operating conditions.
View Article and Find Full Text PDFJ Colloid Interface Sci
September 2025
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA. Electronic address:
Pre-intercalation has emerged as a highly effective strategy to enhance structural integrity and ion transport kinetics in cathodes for aqueous Zn-ion batteries. Here, we report a zinc-ion pre-intercalated hydrate vanadium oxide cathode, in which the initial insertion of Zn induces a significant expansion of the interplanar spacing, followed by contraction at higher Zn concentrations owing to strong electrostatic interactions with the VO framework. Such competing expansion and contraction of interplanar spacing enhances the overall electrochemical properties.
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