Aqueous zinc-metal batteries are considered to have the potential for energy storage due to their high safety and low cost. However, the practical applications of zinc batteries are limited by dendrite growth and side reactions. Epitaxial growth is considered an effective method for stabilizing Zn anode, especially for manipulating the (002) plane of deposited zinc. However, (002) texture zinc is difficult to achieve stable cycle at high capacity due to its large lattice distortion and uneven electric field distribution. Here, a novel zinc anode with highly (101) texture (denoted as (101)-Zn) is constructed. Due to unique directional guidance and strong bonding effect, (101)-Zn can achieve dense vertical electroepitaxy in near-neutral electrolytes. In addition, the low grain boundary area inhibits the occurrence of side reactions. The resultant (101)-Zn symmetric cells exhibit excellent stability over 5300 h (4 mA cm for 2 mAh cm ) and 330 h (15 mA cm for 10 mAh cm ). Meanwhile, the cycle life of Zn//MnO full cell is meaningfully improved over 1000 cycles.

Download full-text PDF

Source
http://dx.doi.org/10.1002/adma.202305988DOI Listing

Publication Analysis

Top Keywords

epitaxial growth
8
high capacity
8
side reactions
8
zinc
5
construct robust
4
robust epitaxial
4
growth 101
4
101 textured
4
textured zinc
4
zinc metal
4

Similar Publications

Wide-bandgap semiconductors (WBGS) with energy bandgaps larger than 3.4 eV for GaN and 3.2 eV for SiC have gained attention for their superior electrical and thermal properties, which enable high-power, high-frequency, and harsh-environment devices beyond the capabilities of conventional semiconductors.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on dissimilar laser welding of AISI 1060 carbon steel and Duplex Stainless Steel 2205, using both experimental and numerical methods to analyze the impact of welding parameters.
  • The increase in laser power significantly influenced the melt pool depth, which rose from 0.4 mm to 1.4 mm when power was ramped up from 250 to 450 W, and the resultant microstructure varied between the two materials with distinct solidification patterns.
  • Tensile test results indicated that the carbon steel side exhibited brittle fracture, while the Duplex Stainless Steel showed a ductile fracture, highlighting the differing mechanical properties due to their respective microstructures and the transition towards ductility with increased laser energy density.
View Article and Find Full Text PDF
Article Synopsis
  • The study uses density functional theory and microkinetic modeling to analyze the growth of hexagonal boron nitride (hBN) on a ruthenium surface, focusing on the process of chemical vapor deposition (CVD).
  • Four main stages of the growth process are detailed: adsorption and deprotonation of borazine, dimerization, stabilization of larger borazine polymers, and the formation of nanoporous intermediates.
  • Findings highlight the importance of the deprotonation sequence in nanostructure formation and provide insights for producing high-quality hBN monolayers, aligning well with experimental data for temperature variations and precursor exposure.
View Article and Find Full Text PDF

Weighted Echo State Graph Neural Networks Based on Robust and Epitaxial Film Memristors.

Adv Sci (Weinh)

January 2025

College of Physics Science & Technology, School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei Province, Hebei University, Baoding, 071002, China.

Hardware system customized toward the demands of graph neural network learning would promote efficiency and strong temporal processing for graph-structured data. However, most amorphous/polycrystalline oxides-based memristors commonly have unstable conductance regulation due to random growth of conductive filaments. And graph neural networks based on robust and epitaxial film memristors can especially improve energy efficiency due to their high endurance and ultra-low power consumption.

View Article and Find Full Text PDF

The role of self-intercalation in 2D van der Waals materials is key to the understanding of many of their properties. Here we show that the magnetic ordering temperature of thin films of the 2D ferromagnet Fe_{5}GeTe_{2} is substantially increased by self-intercalated Fe that resides in the van der Waals gaps. The epitaxial films were prepared by molecular beam epitaxy and their magnetic properties explored by element-specific x-ray magnetic circular dichroism that showed ferromagnetic ordering up to 375 K.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!