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相关概念视频

Standard Electrode Potentials03:02

Standard Electrode Potentials

49.9K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
49.9K
Electrodeposition01:08

Electrodeposition

1.3K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
1.3K
Formation of Complex Ions03:45

Formation of Complex Ions

25.7K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
25.7K

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相关实验视频

Updated: Jan 18, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
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在现场构建稳固的固体电解质介面,用于在酸性电解质中的高级Zn阳极.

Yihua Xie1, Xing Zhou1, Yiming Guo2

  • 1Department of Chemistry and Institute of New Energy, Fudan University, Shanghai, 200433, China.

Small (Weinheim an der Bergstrasse, Germany)
|September 12, 2025
PubMed
概括
此摘要是机器生成的。

一种新的有机/无机固体电解质介相 (SEI) 有效地抑制酸性水性离子电池 (AZIB) 中的树突. 这种保护层可以实现稳定的阳极循环,并提高电池性能.

关键词:
在 Zn 阳极上,酸性电解质是一种酸性电解质.水性Zn-离子电池的电池是水性的.电气双层的电气双层.在现场 SEI SEI.

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科学领域:

  • 电化学 电化学 电化学
  • 材料科学 材料科学 材料科学
  • 储能 储能 储能 储能 储能 储能

背景情况:

  • 酸性电解质 (pH<4) 抑制Zn阳极树突,但导致的演化和腐蚀.
  • 对于酸性水性离子电池 (AZIBs) 来说,开发一种保护性固体电解质间相 (SEI) 是至关重要的.

研究的目的:

  • 在酸性AZIBs的Zn阳极上构建一个强大的有机/无机层SEI.
  • 通过解决接口问题来提高AZIB的稳定性和性能.

主要方法:

  • 在现场通过四甲基四二酸 (TEATFB) 分解构建SEI.
  • 使用BF4触发的水解化学来形成SEI.
  • 关于SEI结构和电化学性能的描述.

主要成果:

  • 该SEI具有用于Zn2+迁移的内部ZnF2层和用于容纳体积的外部有机层.
  • TEA+的优先吸附形成了疏水性EDL,诱导了均的Zn沉积和水排除.
  • 在Zn灯泡Cu电池中达到99.9%的平均库伦比效率 (ACE) 和在Zn灯泡Zn电池中达到3000小时的循环寿命.
  • 在500个循环后,全细胞的MnO2显示了82%的容量保留.

结论:

  • 构建的SEI有效地保护酸性电解质中的Zn阳极.
  • SEI促进了均的Zn沉积,并增强了离子运输,从而提高了电池的性能.
  • 这一战略为开发高性能酸性AZIB提供了一个有前途的途径.