使用基于化氨的复合物合成的单金属化合物的系统设计,以化氨为结构导向剂,用于储能
Tsung-Rong Kuo1, You Zher Yu2, Chung-Hsien Wu2
1International PhD Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan.
Journal of colloid and interface science
|August 19, 2023
概括
使用基于氨酸的结构定向剂 (SDA) 合成的新型金属有机框架 (MOF) 衍生品显示出优越的能量储存能力. 基于的MOF衍生品表现出卓越的性能,突出显示了其在先进电池和超级电容应用中的潜力.
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
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为储能应用提供可调节的性能.
- 结构定向剂 (SDA) 对于定制MOF形态和表面特征至关重要.
- 基于化的化合物显示出作为MOF衍生物合成的有效SDA的前景.
研究的目的:
- 为了合成和描述用于增强能量存储的新型MOF衍生品.
- 调查不同金属种类和SDAs对MOF性能的影响.
- 评估MOF衍生物在电池类型电极和混合装置中的电化学特性.
主要方法:
- 使用2-甲基利米达,NH4BF4,NH4HF2作为SDA和六种金属 (Al,Mn,Co,Ni,Cu,Zn) 的MOF衍生物的合合成.
- 合成材料的表征,包括对金属物种依赖性成分 (氧化,氧化,酸) 的分析.
- 电化学测试MOF衍生物作为电池超级电容器混合动力电极,包括电容,能量密度和循环稳定性测量.
主要成果:
- 基于的MOF衍生品 (Ni-HBF) 在20mV/s下达到698.0F/g的高特异电容 (CF).
- 在混合装置中,Ni-HBF表现出极好的能量密度 (27.9 Wh/kg在325 W/kg).
- 该材料表现出了显著的循环稳定性,在10,000个循环后,CF保留率为170.9%,库伦比效率为93.2%.
结论:
- 使用特定的SDA和金属种类的MOF衍生品的系统设计可以导致高效的电活性材料.
- 由于其独特的结构和氧化还原特性,Ni-HBF衍生物显示出高性能储能应用的巨大潜力.
- 该研究强调了MOF形态和组成在实现先进的储能解决方案中的重要性.
相关概念视频
Valence Bond Theory
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...
Preparation of Amides
Amides are synthesized by treating carboxylic acids with amines in the presence of dehydrating agents like dicyclohexylcarbodiimide (DCC).
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
Preparation of 1° Amines: Azide Synthesis
Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Preparation of 1° Amines: Gabriel Synthesis
Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...


