関連する実験動画

Updated: Feb 17, 2026

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

NaClインターフェーズは,安定したNa_2.85Sb_0.95W_0.05S_3.9Cl_0.1ベースの全固体ナトリウム電池を可能にします

Zhanyou Feng^1,2, Liang Zhu¹, Enbo Qin¹

¹Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China liyong@nimte.ac.cn yaoxy@nimte.ac.cn.

Chemical science

|February 16, 2026

まとめ

研究者らは,ボルンガムと塩素との共同ドーピングにより,新しい硫化ナトリウム固体電解質を開発した. これにより,より安全で高性能な全固体ナトリウム電池のイオン伝導性と安定性が向上します.

科学分野:

材料科学材料科学とは
電気化学電気化学について
エネルギー貯蔵エネルギー貯蔵

背景:

全固体ナトリウム (Na) バッテリー (ASSSB) は,安全性と費用対効果が向上しています.
高いNa+イオン伝導性を有する安定した硫化ナトリウム電解質の開発は,高性能ASSSBにとって非常に重要です.

研究の目的:

トングステン (W) と塩素 (Cl) を併用した新しい硫化ナトリウム固体電解剤を設計・合成する.
ナトリウム金属アノドのための硫化ナトリウム電解質のイオン伝導性と界面安定性を高めるために.

主な方法:

電解質の合成のために,溶解消し処理と冷却処理を組み合わせた溶解消し.
イオン伝導性と電気化学的安定性の特徴.
Na/電解質/Na対称セルおよびTiS2/電解質/Na ASSSBの製造と試験.

主要な成果:

W-Cl共用ドーピングされたNa2.85Sb0.95W0.05S3.9Cl0.1電解質で12.66 mS cm-1のNa+イオン伝導性を達成し,ドーピングされていない材料から大幅に増加しました.
現場で形成されたNaClベースのインターフェーズ層は,ナトリウム金属アノドとのインターフェーズ側反応を効果的に抑制しました.
800時間以上対称なセルで安定したサイクリングを証明し,TiS2ベースのASSSBで100サイクル後に81.6%の容量保持を達成しました.

結論:

トングステンと塩素の共同ドーピングは,硫化ナトリウム固体電解質の性能を高めるための有効な戦略です.
開発された電解質は,高いイオン伝導性と優れた界面安定性を示し,実用的なASSSBへの道を開く.

さらに関連する動画

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

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

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

Published on: November 11, 2013

関連する概念動画

The Born-Haber Cycle

The Born-Haber Cycle

Ionic Bonding and Electron Transfer

Ionic Bonding and Electron Transfer

Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.

Ionic Bonds

Ionic Bonds

Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...

Ionic Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

Electrolysis

Electrolysis

In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...

Precipitation Reactions

Precipitation Reactions

In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction occurs when oppositely charged ions in solution overcome their attraction for water and bind to each other, forming a precipitate that separates out from the solution. Since such reactions involve the exchange of ions between ionic compounds in aqueous solution, they are also referred to as double displacement, double replacement, exchange reactions, or...