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関連する概念動画

Properties of Transition Metals02:58

Properties of Transition Metals

25.8K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
25.8K
Energy Transfer in Chemical Reactions01:16

Energy Transfer in Chemical Reactions

8.1K
Chemical reactions require sufficient energy to cause the matter to collide with enough precision and force that old chemical bonds can be broken and new ones formed. In general, kinetic energy is the form of energy powering any type of matter in motion. Imagine a person building a brick wall. The energy it takes to lift and place one brick on top of another is the kinetic energy—the energy matter possesses because of its motion. Once the wall is in place, it stores potential energy.
8.1K
Energy Diagrams, Transition States, and Intermediates02:13

Energy Diagrams, Transition States, and Intermediates

16.4K
Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction coordinate represented on the horizontal axis shows how far the reaction has progressed structurally. Positions along the x-axis close to the reactants have structures resembling the reactants, while positions close to the products resemble the products.  Peaks on the energy diagram represent stable structures with measurable lifetimes, while...
16.4K
Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

2.3K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.3K
Energy to Drive Translocation01:37

Energy to Drive Translocation

2.1K
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
2.1K
Phase Transitions02:31

Phase Transitions

19.1K
Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to...
19.1K

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関連する実験動画

Updated: Jun 26, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

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エネルギー移行には新しい材料が必要です

Chad A Mirkin1, Edward H Sargent2, Daniel P Schrag3

  • 1Chad A. Mirkin is director of the Northwestern University International Institute for Nanotechnology and is the George B. Rathmann Professor of Chemistry, Northwestern University, Evanston, IL, USA.

Science (New York, N.Y.)
|May 16, 2024
PubMed
まとめ
この要約は機械生成です。

清潔なエネルギーを推進するには 材料科学の課題を克服する必要があります 新しい材料は効率的なエネルギー生産,消費,そして気候変動と闘うためのグリーン燃料の生成に不可欠です.

さらに関連する動画

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
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Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

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関連する実験動画

Last Updated: Jun 26, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
10:03

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

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Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
09:18

Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications

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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering
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Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

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科学分野:

  • 材料科学
  • エネルギー科学
  • 環境科学

背景:

  • 電気自動車に加えて 風力や太陽光などの 再生可能エネルギー源のコストの低下は 化石燃料からの移行の進展を示しています
  • 清潔なエネルギーへの完全な移行には 取り組むべき大きな障害があります

研究 の 目的:

  • 完全なクリーンエネルギーへの移行における新しい材料の重要な役割を強調する.
  • エネルギー材料の研究開発を加速させる必要性を強調する.

主な方法:

  • この研究は,エネルギー材料の研究の現在の状態のレビューと分析です.
  • 材料がエネルギー効率と資源利用に及ぼす影響に関する情報をまとめています.

主要な成果:

  • 新しい材料はエネルギー生産と消費効率を高めることができます.
  • 希少な鉱物への依存を軽減し,グリーン水素,クリーンアンモニア,炭素中立の燃料を可能にします.
  • 現在のエネルギー材料の研究開発は 気候変動の需要を満たすには不十分です

結論:

  • 材料科学はクリーンエネルギーへの移行の課題を克服する上で 重要な役割を果たします
  • 気候変動の緩和には,新しいエネルギー材料の研究開発の加速が不可欠です.
  • 持続可能なエネルギーの未来を実現するには,さらなる投資と材料の革新に重点を置く必要があります.