Scientists in the field of new energy have prepared clay-based two-dimensional nanofluidic membranes to realize salt differential energy power generation, a research result that undoubtedly brings a breakthrough in the field of new energy. The all-natural two-dimensional nanofluidic membrane they prepared using natural clay raw materials not only reached 700cm² in area, but also achieved an osmotic energy output power of 8.61Wm per square meter under simulated seawater and river water conditions, an achievement that is 1.7 times higher than that of previous studies of the same kind, marking a leading position in the field of salt differential energy power generation from two-dimensional membranes.
New Energy Fluid Membrane Advantages
Another significant advantage of this all-natural 2D nanofluidic membrane is its economic and environmental friendliness. Compared to mainstream 2D membrane materials, the full life cycle resource consumption is reduced by up to 1/14, greenhouse gas emissions are reduced by up to 1/9, and production costs are reduced by up to 1/13. These significant reductions demonstrate not only the economic and resource benefits, but also the important environmental benefits.
New Energy Fluid Membrane Stability
In addition, this nanofluidic membrane has a stable and continuous long-cycle salt differential energy generation capability of up to 30 days, which provides a reliable membrane material base and a new strategy for large-scale salt differential energy generation. At the same time, it also provides new ideas for the development of two-dimensional membrane materials that can be prepared on a large scale, which is expected to promote the development and application of membrane-based new energy technologies.
New Energy Fluid Membrane Applications
In terms of "zero-carbon" salt differential energy generation, the research results of this new energy fluid membrane can be applied to efficiently capture the ionic salt differential electrochemical potential energy of natural seawater/river water, industrial waste brine, and so on. Through the construction of salt differential battery components, energy storage stations can realize the capture and utilization of salt differential energy on a large scale. As a kind of clean energy with wide storage capacity and strong environmental stability, salt differential energy has the advantages of cleanliness and environmental protection, all-weather stable and continuous power generation, and theoretically, the total amount of global salt differential energy from rivers into the sea can reach 2.6TW, which is equivalent to 17% of global electricity consumption.
Universality of New Energy Fluid Membrane
In addition to the application in the field of salt differential energy generation, the research results of new energy fluidic membrane are also universal, and can be used as a functional diaphragm in battery systems such as lithium batteries and liquid flow batteries to optimize the ion transport and improve the energy density and life of the battery.
In the field of environmental resources and water resources, the ion-selective screening function of new energy fluidic membranes also shows important application potential, including wastewater treatment, lithium extraction from salt lakes, brine refining and seawater desalination.
Reverse electrodialysis (RED) technology is one of the most promising industrialized salt differential energy generation technologies, and its core component is ion-selective permeable membrane. Ideal ion-selective membranes need to have high ion selectivity and high ion permeability, and the nanoporous thin film characteristics of two-dimensional nanofluidic membranes make them find the optimal balance between ion selectivity and ion permeability, which is expected to realize the high efficiency of energy conversion in the generation of salt differential energy.
In terms of structural classification, nanofluidic membranes mainly include one-dimensional through-hole-like, two-dimensional layer-like, and three-dimensional network-like structures. Among them, the two-dimensional nanofluidic membrane with laminar structure shows great potential in salt differential energy conversion, and the experimental value of its salt differential energy output power has reached the level of industrial application.
Commercialization of New Energy Fluid Membrane
From the commercialization and environmental protection perspectives, two-dimensional nanofluidic membranes constructed with natural raw materials are one of the good choices for achieving large-scale osmotic energy harvesting and utilization, which not only helps to promote the development of new energy technologies, but also contributes to environmental protection and resource conservation.
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