塩基溶液における酸素進化反応の電気触媒としての移行金属酸化物:応用にインスパイアされたルネッサンス
Fang Song1, Lichen Bai1, Aliki Moysiadou1
1Laboratory of Inorganic Synthesis and Catalysis , Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL-ISIC-LSCI , BCH 3305 , Lausanne CH 1015 Switzerland.
Journal of the American Chemical Society
|May 24, 2018
まとめ
移行金属酸化物は,再生可能エネルギー貯蔵のための水分裂の重要なステップである酸素進化反応 (OER) の地球に豊富に存在する重要な触媒である. この展望は,これらの有望なOER電触媒の理解と開発における最近の進歩を振り返るものです.
科学分野:
- 電気化学
- 材料科学
- 再生可能エネルギー
背景:
- 水分分離は 断続的な再生可能エネルギーを 水素燃料として貯蔵するために不可欠です
- 酸素進化反応 (OER) は効率的な水分裂における重要なボトルネックです.
- 移行金属酸化物は地球に豊富に存在する有望なOER電触媒として再現されています.
研究 の 目的:
- トランジション金属酸化物のOER電触媒の最近の進歩の包括的な概要を提供する.
- 理論的理解,活動傾向,特徴づけの技術における進歩を強調する.
- OERの触媒分野における課題と将来の方向性を議論する.
主な方法:
- OERメカニズムに関する理論的研究のレビュー
- 移行金属酸化物における構造活動関係の分析
- 活性部位の決定のための in situ および operando 特徴付け方法の議論.
主要な成果:
- 金属酸化物のOERの基本的メカニズムを理解する上で重要な進歩.
- 材料の特性に基づいて触媒活動の主要な傾向を特定する.
- カタリシス中の活性部位を検出するためのオペラント技術の進歩.
結論:
- 移行金属酸化物は,効率的で費用対効果の高いOER触媒への実行可能な経路を提供します.
- 理論的モデルを洗練し,新しい材料を開発するためにさらなる研究が必要です.
- 次世代の電気触媒の設計には,高度な特徴化の継続的な探求が不可欠です.
関連する概念動画
02:58Properties of Transition Metals
30.0K
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.
30.0K
03:11Oxidation-Reduction Reactions
75.8K
Oxidation–Reduction Reactions
75.8K
03:03Chemical Reactions in Aqueous Solutions
72.6K
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction.
72.6K
03:14Oxidation Numbers
42.9K
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules.
42.9K
02:26SN2 Reaction: Transition State
12.0K
An SN2 reaction of an alkyl halide is a single-step process in which bond formation between the nucleophile and the substrate and bond breaking between the substrate and the halide occurs simultaneously through a transition state without forming an intermediate.
When the nucleophile approaches the electrophilic carbon with its lone pairs, the halide acts as a leaving group and moves away with the electron-pair bonded to the carbon. Dotted partial bonds represent the bonds being formed or broken...
When the nucleophile approaches the electrophilic carbon with its lone pairs, the halide acts as a leaving group and moves away with the electron-pair bonded to the carbon. Dotted partial bonds represent the bonds being formed or broken...
12.0K
02:51Metal-Ligand Bonds
24.4K
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...
24.4K