相关实验视频
Updated: Jun 25, 2026

08:45
Fabrication of Spatially Confined Complex Oxides
Published on: July 1, 2013
高质子导电性的一维铁氧酸盐二酸盐的高质子导电性
Teppei Yamada1, Masaaki Sadakiyo, Hiroshi Kitagawa
1Department of Chemistry, Faculty of Science, Kyushu University, and JST-CREST, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan. hiroshi@chem.kyushu-univ.jp
Journal of the American Chemical Society
|February 20, 2009
概括
铁酸二酸盐在室温下显示出高质子导电性. 这一发现表明协调聚合物对燃料电池电解质和传感器具有前景.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 固态化学 固态化学
背景情况:
- 质子导电材料是电化学设备 (如燃料电池和传感器) 的重要组成部分.
- 在环境温度下开发具有高质子导电性的材料是能源储存和转换的关键挑战.
- 协调聚合物为设计新型功能材料提供了一个多功能平台.
研究的目的:
- 为了评估一个一维协调聚合物的质子导电性,铁氧酸二酸盐.
- 研究协调聚合物作为质子导电电解质的潜力.
- 探索为燃料电池和传感器设计先进材料的新途径.
主要方法:
- 合成和表征一个维的铁氧酸盐二水合物.
- 使用电化学阻抗光谱学测量质子导电性.
- 导电性的分析作为温度和湿度的函数.
主要成果:
- 铁氧沙酸二在环境温度下表现出1.3mS cm(-1) 的质子导电性.
- 该材料表现出显著的质子导电性,而不依赖强酸性功能群.
- 在环境条件下,电导率被发现是稳定的.
结论:
- 一维协调聚合物,如铁氧沙酸二水合物,是导质子材料的有希望的候选物.
- 这一发现为设计用于燃料电池和传感器的经济有效和高效的电解质开辟了新的可能性.
- 对协调聚合物结构的进一步研究可能会导致电化学设备性能的突破.
相关概念视频
Debye–Huckel–Onsager Conductance Equation
The Debye-Hückel-Onsager equation is a cornerstone of physical chemistry, providing a method to determine the molar conductance (Λm) and molar conductance at infinite dilution (Λ°m) for uni-univalent electrolytes.Uni-univalent electrolytes are electrolytes that dissociate in solution to produce one cation with a +1 charge and one anion with a –1 charge per formula unit.This equation addresses two crucial phenomena: the asymmetry effect and the electrophoretic effect. According to this equation,...
Ferromagnetism
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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...
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...
Crystal Field Theory - Octahedral Complexes
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
Colors and Magnetism
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Electrolytes: van't Hoff Factor
Colligative Properties of ElectrolytesThe colligative properties of a solution depend only on the number, not on the identity, of solute species dissolved. The concentration terms in the equations for various colligative properties (freezing point depression, boiling point elevation, osmotic pressure) pertain to all solute species present in the solution. Nonelectrolytes dissolve physically without dissociation or any other accompanying process. Each molecule that dissolves yields one dissolved...
