ヘテロ・トライ・メタリック・プリキュラーで,2:2:1メタル比で,少なくとも五核分子組成を必要とします
Haixiang Han1,2, Jesse C Carozza1, Zheng Zhou1
1Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States.
Journal of the American Chemical Society
|June 24, 2020
まとめ
研究者らは,ナトリウムイオン電池の新型前体を開発した. この単一ソースの分子は金属比率を正確に制御し,フェーズ純のNa2Mn2FeO6材料につながります.
科学分野:
- 無機化学
- 材料科学
- 電気化学
背景:
- 次世代のナトリウムイオン電池には 先進的なカトド材料の開発が不可欠です
- 先駆体における金属組成と酸化状態の正確な制御は困難です.
- ヘテロメタリック分子は 材料特性を調整する可能性を秘めています
研究 の 目的:
- ヘトロトリメタリック単一ソース分子前駆体を合理的に設計し,合成し,特徴づけること.
- P2-Na2Mn2FeO6のナトリウムイオン電池のカトド材料を製造する.
- 先駆体内の特定の金属比 (Na:Mn:Fe = 2:2:1) と酸化状態を達成するために.
主な方法:
- 既知のポリマー構造からペンタメタリックプラットフォーム [MnII ((ptac) 3-Na-MnIII ((acac) 3-Na-MnII ((ptac) 3) ] (1) を合成する.
- 標的ヘトロトリメタリック前体 [MnII ((ptac) 3-Na-FeIII ((acac) 3-Na-MnII ((ptac) 3) ]を形成するために,FeIIIをMnIIIに同値置換する.
- 単一結晶X線 difraktion,シンクロトロン共振 difraktion,X線多波長異常 difraktion,X線光スペクトロスコーピー,Mössbauerスペクトロスコーピー,ガス相DART質量スペクトロメトリを使用して特徴づけました.
- 電子顕微鏡を用いた前駆物の熱分解と結果の酸化物の特徴化.
主要な成果:
- ユニークなペンタメタリックアセンブリが設計され,合成されました.
- 望ましいNa:Mn:Fe比率を持つヘトロトリメタリック前駆体[MnII ((ptac) 3-Na-FeIII ((acac) 3-Na-MnII ((ptac) 3) ]を成功裏に得られた.
- 金属イオンの正確な配置と酸化状態は,複数の高度な技術によって明確に確認されました.
- 前駆体3のクリーン分解により,均一な金属分布を持つフェーズ純粋のP2-Na2Mn2FeO6が得られる.
結論:
- この研究は,複雑なヘテロメタリック単一ソース前駆体を作るための成功した戦略を示しています.
- 開発された前駆物は,ナトリウムイオン電池のための高品質のP2-Na2Mn2FeO6カトド材料の合成を可能にします.
- この方法論は,制御された組成で高度な材料を設計するための経路を提供します.
さらに関連する動画
12:43The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique
Published on: November 28, 2016
7.9K
09:45Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
9.6K
関連する概念動画
Predicting Molecular Geometry
35.7K
VSEPR Theory for Determination of Electron Pair Geometries
35.7K
Metallic Solids
16.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and...
16.4K
Metal-Ligand Bonds
19.3K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
19.3K
Structural Isomerism
16.8K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly,...
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly,...
16.8K
Valence Bond Theory
8.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
8.9K
Properties of Organometallic Compounds
2.1K
Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
2.1K
