孔隙碳的综合性能指标 面向实用的超级电容器设备
Yuting Song1, Sicheng Fan1, Zerui Yan1
1State Key Laboratory of Physical Chemistry of Solid Surface, College of Materials, Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, Xiamen University, Xiamen, 361005, People's Republic of China.
Nano-micro letters
|January 25, 2026
概括
这项研究将活性炭 (AC) 的特性与超级电容器的能量密度联系起来. 一个新的工具和描述符 (η) 预测设备的能量,帮助实际的超级电容器开发.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 提高超级电容器的能量密度对于先进的设备至关重要.
- 活性炭 (AC) 的材料级电容量测量不能直接预测设备级性能.
- 需要弥合材料特性和实际设备能量密度之间的差距.
研究的目的:
- 在设备层面研究交流电容,孔隙性和电解质量之间的关系.
- 开发超级电容器能量密度的预测工具.
- 引入一个新的描述符来评估超级电容器的交流材料.
主要方法:
- 组装超级电容袋细胞来测试交流材料.
- 分析交流电容,孔隙性和电解质要求之间的相关性.
- 开发一种用于预测设备能量密度 (Edevice) 的计算工具.
- 提出和验证一个新的描述符 (η),包括电容和孔径.
主要成果:
- 设备级测试揭示了交流电特性与最佳电解质量之间的关键关系.
- 交流材料的特定电容和孔隙性共同决定了实际设备的能量密度.
- 一个计算E-工具被开发来预测Edevice.
- 一个新的描述符 (η) 显示了与Edevice的线性关系.
结论:
- 该研究通过考虑材料特性和设备级因素,为优化超级电容器设计提供了关键的见解.
- 开发的E-工具和描述器 (η) 可以加速高性能超级电容器的开发.
- 这项工作为在实用的超级电容器设备中更准确地预测能量密度提供了一条途径.
相关概念视频
The Carbon Cycle
43.3K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
43.3K
Carbon Skeletons
114.6K
Life on Earth is carbon-based, as all macromolecules that make up living organisms contain carbon atoms. All organic compounds have a carbon backbone. Each carbon atom is tetravalent and can bond with four other atoms, making it an extraordinarily flexible component of biological molecules. Because carbon’s valence electrons are stable, it rarely becomes an ion. As the carbon chain increases in length, structural modifications such as ring structures, double bonds, and branching side...
114.6K
Carbonation Shrinkage
457
Atmospheric CO2 penetrates the concrete's pores and, in the presence of moisture, forms carbonic acid, which then reacts with calcium hydroxide in the hydrated cement, forming calcium carbonate. This process reduces the concrete's volume and is termed carbonation shrinkage.
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
457
Characteristics of Practical Op Amps
843
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
843
Theoretical Foundations of Nursing Practice
17.3K
Theories play an essential role in organizing patient care. Theories refer to a proposed or followed belief, policy, or procedure that is the basis for action. Nursing theories are knowledge-based concepts that guide nurses' actions, influence nursing education and practice, and allow nurses to care for their patients.
Theories provide a perspective to assess patients' conditions and organize data and methods. They also assist in analyzing and interpreting information. They represent a...
Theories provide a perspective to assess patients' conditions and organize data and methods. They also assist in analyzing and interpreting information. They represent a...
17.3K
Equivalent Circuits for Practical Transformers
1.4K
The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
In a practical transformer, each winding exhibits resistance and leakage reactance. The...
In a practical transformer, each winding exhibits resistance and leakage reactance. The...
1.4K


