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Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.6K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.6K
Charging Conductors By Induction01:15

Charging Conductors By Induction

8.8K
The Earth is a good conductor of electricity, and it is so big that it can be considered an infinite source or sink of charges. It can easily exchange charges with any matter.
Generally, conductors like metals do not allow any excess charge to be present on them. Any excess charge added to metals easily flows away, for example, when a metal is placed on the Earth. This process is called earthing.
However, conductors can be charged by a process called induction. For example, consider charging a...
8.8K
Electrical Conductivity01:13

Electrical Conductivity

1.6K
In perfect conductors, the electric field inside is always zero due to the abundance of free electrons, which nullify any field by flowing. As a result, any residual charge resides on the surface.
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
More generally, it is related to the force per unit charge, which involves the...
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Interfacial Electrochemical Methods: Overview01:06

Interfacial Electrochemical Methods: Overview

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Interfacial electrochemical methods focus on the phenomena occurring at the boundary between an electrode and a solution, as opposed to bulk methods that concentrate on the solution's overall properties. These interfacial methods are classified as either static or dynamic based on the presence of a nonzero current in the electrochemical cell and the consistency of analyte concentrations. Static methods, such as potentiometry, measure the cell's potential without any significant current...
677
Band Theory02:35

Band Theory

16.7K
When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
16.7K
Semiconductors01:22

Semiconductors

1.2K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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超音波導体 バルクインターフェイス伝導

Chenji Hu1,2, Yanbin Shen2, Ming Shen3

  • 1School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, and in situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.

Journal of the American Chemical Society
|September 28, 2020
PubMed
まとめ
この要約は機械生成です。

研究者らは,固体電池用の新しいバルクインターフェイス 超音波導体 (BISC) を開発した. これらの材料は,イオン伝導のための連続的なインターフェイスを使用し,高いイオン伝導性を達成し,安定したリチウム金属電池サイクルを可能にします.

さらに関連する動画

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
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Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
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Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

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関連する実験動画

Last Updated: Dec 7, 2025

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating
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Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

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Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
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Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

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科学分野:

  • 材料科学
  • 電気化学
  • 固体イオン

背景:

  • 超音波伝導体は固体電池 (SSB) にとって不可欠ですが,現在の選択肢は特定の構造ファミリーに限定されています.
  • 複合システムにおけるインターフェイス伝導は潜在的経路として認識されていますが,実際的なアプリケーションは実現されていません.

研究 の 目的:

  • インターフェイス伝導メカニズムに基づく新種の超音波導体を開発する.
  • 固体電池の応用におけるこれらの材料の可能性を実証する.

主な方法:

  • 複合薄膜を大量に製造する.
  • リチウム,ナトリウム,およびマグネシウムイオンBISCのイオン伝導性の特徴.
  • リチウムイオンBISCを使用した固体リチウム金属対称電池の試験.

主要な成果:

  • 25 °Cで1.16 mS cm-1 (Li+),0.40 mS cm-1 (Na+),0.23 mS cm-1 (Mg2+) のイオン伝導性を達成した.
  • Li+の場合,464 mS cm-2までの高い伝導率を示した.
  • 超低ポテンシャルと安定したサイクル (>5000h) がリチウム金属対称電池で観察された.

結論:

  • 新しいイオン伝導材料のクラスとして,バルクインタフェース超イオン伝導体 (BISC) が導入された.
  • 超音波導体には 伝統的な家族を超えて 新しい構造的可能性が開かれました
  • BISC の伝導機構と材料設計の原則に関するさらなる研究が必要であることを強調した.