Hydrogen-assisted neutralization flow battery with high power and energy densities

Experimental Investigation of Coupled Transport Mechanisms in a PEM Based Thermoelectric Energy Converter

“…The monocausal transport mechanisms are typically effective since other gradients are unknown. To compare the measured L φφ with the classical transport coefficient κ m for validation purposes, one needs to translate the chemical potential of the water into the water content in the membrane λ w , as this is included in Equation (14). A sorption isotherm [26] is commonly used as an approach to describe the dependency of the water content of the membrane on the activity and temperature of the water inside the membrane.…”

“…Therefore, the chemical potential of the water shows a growth in the water content with increasing chemical potential and temperature. Taking this relation into account and applying it to the measured results, a comparison with the experimental values of L φφ and the calculated values of κ m using Equations ( 13) and (14) shows a somewhat similar behavior (structured lines in Figure 10), indicating the credibility of the measured data, which is also in good accordance with the other literature [33]. When comparing the absolute values of the measured and calculated L φφ as presented in Figure 10, there are smaller values of the experimental data for low µ w,m and T m than for the calculated data, which changes with increasing T m for high µ w,m .…”

“…In addition to these different concepts, TGCs also vary in redox couples and electrolytes, which is well summarized in [11]. Due to its increasing availability and without any climate impact, the use of green hydrogen as a reactant in TGC shows great potential, which has already been proven in other thermoelectric energy converters [12][13][14]. As the amount of low-temperature waste heat increased continuously over the past years, the TGC could find application in several fields, such as stable devices (energy source: i.e., solar radiation, geothermal sources, household appliances) or wearable and portable devices (energy source: i.e., human body, automobiles) [15].…”

The Progress of Polymer Composites Protecting Safe Li Metal Batteries: Solid‐/Quasi‐Solid Electrolytes and Electrolyte Additives

“…The persistent utilization of fossil fuels and the rapid degradation of the environment caused by greenhouse gas emissions from conventional power generation have prompted contemporary society to prioritize the development of a clean, ecofriendly, and convenient renewable energy source. [1][2][3] Fortunately, due to the rapid advancements in various renewable energy sources such as solar energy transition, [4] wind energy, [5] and hydrogen energy, [6] significant progress has been made in mitigating the energy crisis. The instability of most renewable energy sources, however, poses a challenge to their large-scale commercialization.…”