多功能湿气驱动的发电机,用于连接应用和热管理
Can Wan1, Zihao Li1, Xijia Yang1
1Key Laboratory of Advanced Structural Materials, Ministry of Education and School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China.
Journal of colloid and interface science
|February 18, 2025
概括
一个新的双层水凝能量发电机从水蒸发和离子梯度中收集清洁的能量. 这种水力驱动的能源发电机 (MEG) 为电子产品提供稳定的输出功率和热管理.
科学领域:
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
- 纳米技术纳米技术
背景情况:
- 湿气驱动的能源发电机 (MEGs) 显示出对清洁能源的承诺,但在输出功率和单模式发电方面面临限制.
- 由于性能和运行稳定性不足,现有的MEG往往难以实际应用.
研究的目的:
- 开发一种先进的蒸发驱动的双层水凝MEG,具有增强的能量收集能力.
- 调查设备性能背后的协同机制,包括离子扩散和材料特性.
主要方法:
- 使用水分子蒸发和离子度梯度制造双层水凝MEG.
- 性能特征包括电压,电流,功率密度和在广泛的温度范围内运行稳定性.
- 计算模拟 (DFT和MD) 以阐明聚合物水解和离子吸附在设备性能中的作用.
主要成果:
- 一个单一的MEG单元 (1 cm2) 实现了1.20 V,0.45 mA,功率密度为85 μW cm-2.2.
- 在广泛的温度范围内 (-21.9至58.5°C) 证明了稳定的运行.
- 该设备具有双重功能,能够充电电容器,供电微电子设备,并提供热管理,将设备温度降低高达21.83°C.
结论:
- 开发的双层水凝MEG通过协同蒸发和离子梯度效应提供了高效和稳定的清洁能源采集.
- 由于聚合物的水解能力和植物酸对H3O+离子的吸附,设备的性能得到了显著提高.
- 这种多功能MEG技术有可能为微电子设备和集成热管理解决方案提供动力.
相关概念视频
Mechanism of heat transfer
1.1K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.1K
Mechanisms of Heat Transfer II
3.2K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.2K
Mechanisms of Heat Transfer
252
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
252
Mechanisms of Heat Transfer I
4.1K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.1K
Thermal Stress
2.4K
If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
2.4K
Thermal expansion and Thermal stress: Problem Solving
1.1K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
1.1K


