Charges Transfer in Interfaces for Energy Generating

Abstract

Under the threat of energy crisis and environmental pollution, the technology for sustainable and clean energy extraction has received considerable attention. Owing to the intensive exploration of energy conversion strategies, expanded energy sources are successfully converted into electric energy, including mechanical energy from human motion, kinetic energy of falling raindrops, and thermal energy in the ambient. Among these energy conversion processes, charge transfer at different interfaces, such as solid–solid, solid–liquid, liquid–liquid, and gas‐contained interfaces, dominates the power‐generating efficiency. In this review, the mechanisms and applications of interfacial energy generators (IEGs) with different interface types are systematically summarized. Challenges and prospects are also highlighted. Due to the abundant interfacial interactions in nature, the development of IEGs offers a promising avenue of inexhaustible and environmental‐friendly power generation to solve the energy crisis.

Liquid-Assisted Bionic Conical Needle for In-Air and In-Oil–Water Droplet Ultrafast Unidirectional Transportation and Efficient Fog Harvesting

“…As shown in Figure c,d, from the mechanical perspective, the coalesced droplet had a larger volume, which led to a longer wetting length and increased Laplace driving force. , Therefore, the droplet could overcome the frictional force and move a further distance. From the energetic perspective, the coalescence of the two droplets reduced the liquid surface area, resulting in a decrease in the surface energy of the droplet. , This reduction in surface energy was converted into kinetic energy, enabling the emerged water droplet to move a longer distance forward.…”

“…From the energetic perspective, the coalescence of the two droplets reduced the liquid surface area, resulting in a decrease in the surface energy of the droplet. 36,37 This reduction in surface energy was converted into kinetic energy, enabling the emerged water droplet to move a longer distance forward. S10d, the results illustrated that the transport velocity of water droplets along the axis of the copper needle decreased with increasing apex angle, which is consistent with the results by the previous reports about the transport velocity of the clamshell-shape droplet on a conical surface is decreased with the increase of cone apex angle.…”

Sustainable hydrothermal carbon for advanced electrochemical energy storage

“…Recently, the energy crisis, global warming, and environmental pollution have become critical issues, attracting considerable concern worldwide. 1,2 Accordingly, renewable energy and energy storage technologies have been extensively developed to resolve these problems. Advanced EESDs, including supercapacitors (SCs) and rechargeable batteries, present great potential in portable electronic devices, electric vehicles, and large-scale grid storage.…”

Harvesting Inertial Energy and Powering Wearable Devices: A Review

“…[1][2][3] However, at present, wearable devices are usually powered by batteries, and the life of batteries has become the key to restrict the development of wearable devices. [4][5][6] In recent years, researchers have begun to explore harvesting energy from the environment for use in powering microelectronic devices. [7][8][9] For wearable devices, the mechanical energy generated by human movement is a good energy source.…”