Synchronous Regulation of D-Band Centers in Zn Substrates and Weakening Pauli Repulsion of Zn Ions Using the Ascorbic Acid Additive for Reversible Zinc Anodes.
Zhengchunyu ZhangPeng WangChuanliang WeiJinkui FengShenglin L XiongBaojuan XiPublished in: Angewandte Chemie (International ed. in English) (2024)
The advanced aqueous zinc-ion batteries (AZIBs) are still challenging due to the harmful reactions including hydrogen evolution and corrosion. Here, a natural small molecule acid vitamin C (Vc) as an aqueous electrolyte additive has been selectively identified. The small molecule Vc can adjust the d band center of Zn substrate which fixes the active H + so that the hydrogen evolution reaction (HER) is restrained. Simultaneously, it could also fine-tune the solvation structure of Zn ions due to the enhanced electrostatics and reduced Pauli repulsion verified by energy decomposition analysis (EDA). Hence, the cell retains an ultra-long cycle performance of over 1300 cycles and a superior Coulombic efficiency (CE) of 99.5 %. The prepared full cells display increased rate capability, cycle lifetime, and self-discharge suppression. Our results shed light on the mechanistic principle of electrolyte additives on the performance improvement of ZIBs, which is anticipated to render a new round of studies.
Keyphrases
- ion batteries
- small molecule
- ionic liquid
- heavy metals
- protein protein
- induced apoptosis
- quantum dots
- cell therapy
- air pollution
- cell cycle arrest
- high resolution
- oxide nanoparticles
- molecular dynamics
- molecular dynamics simulations
- stem cells
- mass spectrometry
- risk assessment
- bone marrow
- water soluble
- signaling pathway
- cell proliferation
- endoplasmic reticulum stress