Category: Overview and basic knowledge of clean energy

Introduce the basic concepts, technical status and requirements of clean energy, as well as basic knowledge of wind energy, solar energy, nuclear energy and fuel cells.

Learn about nine new clean and green energies

nine new clean and green energies 2

Clean energy refers to environmentally friendly energy sources, indicating eco-friendliness, minimal emissions, and low pollution levels. However, this concept is not precise enough and can easily lead people to misunderstand it as a classification of energy sources, believing that there is a division between clean and dirty energy sources, thereby misconstruing the true meaning of […]

Choosing the Ideal Motorcycle Battery Voltage: Comparing 48V, 60V, and 72V

Choosing the Ideal Motorcycle Battery Voltage Comparing 48V, 60V, and 72V

Electric motorcycles have surged in popularity due to their inherent advantages. In 2022 alone, sales reached a staggering 45 million, showcasing the widespread adoption of this mode of transportation. Among the prevalent battery voltages—48V, 60V, and 72V—selecting the right one significantly enhances the electric motorcycle experience. Here’s an in-depth comparison:

What are the characteristics of fuel cells?

What are the characteristics of fuel cells?

1. Advantages Fuel cells have attractive features of high efficiency, non-polluting, short construction period, easy maintenance and low cost. (1) Energy conversion is efficient. The fuel cell directly converts the chemical energy of the fuel into electrical energy, which is not limited by the Carnot cycle. The current fuel-electrical energy conversion efficiency of the fuel […]

Phosphoric acid fuel cells

Phosphoric acid fuel cells

Phosphoric Acid Fuel Cell (PAFC) uses phosphoric acid as electrolyte, oxygen as oxidant, hydrogen-rich gas (such as natural gas reformed gas) as fuel, and platinum alloy as catalyst at both anode and cathode. The electrochemical reaction takes place on the surface of catalyst particles supported by carbon black, and the working temperature is around 200°C. […]

Solid oxide fuel cells and molten carbonate fuel cells

Solid oxide fuel cells and molten carbonate fuel cells

Solid oxide fuel cell Solid Oxide Fuel Cell (SOFC) is an all-solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy with high efficiency at high temperature. Solid yttrium oxide and zirconium oxide electrolytes have strong ion conduction function at high temperature, can conduct O2–, and play […]

Proton exchange membrane fuel cell and direct methanol fuel cell

Proton exchange membrane fuel cell and direct methanol fuel cell

Proton exchange membrane fuel cell Proton Exchange Membrane Fuel Cell (PEMFC) uses perfluorosulfonic acid solid polymer as electrolyte, platinum/carbon or platinum nail/carbon as electrocatalyst, hydrogen or purified reformate gas as fuel, air or pure oxygen as oxidant, and graphite or surface-modified metal plate with gas flow channel as bipolar plate. The solid polymer material is the electrolyte. […]

Classification of fuel cells and introduction to alkaline fuel cells

Classification of fuel cells and introduction to alkaline fuel cells

1. Classification of fuel cells The types of fuel cells can be roughly classified as follows according to different methods: (1) According to the operating mechanism of fuel cells, there are mainly acidic fuel cells and alkaline fuel cells. (2) According to the type of electrolyte, there are mainly alkaline fuel cells, phosphoric acid fuel cells, molten […]

Electrode polarization and energy conversion efficiency in fuel cells

Electrode polarization and energy conversion efficiency in fuel cells

(1) Electrode polarization. When the battery is working (with current passing through the electrodes), the phenomenon that the electrode potential deviates from the reversible potential is called electrode polarization. The larger the deviation value, the more severe the polarization. The degree of polarization of the electrode can be represented by the overpotential n, and the […]

Reversible electromotive force and electrochemical reaction rate of fuel cells

Reversible electromotive force and electrochemical reaction rate of fuel cells

(1) The reversible electromotive force of the battery. The heat-electric energy conversion relationship followed by the fuel cell is ΔG=-nFEr     (1-1) When the activities of the substances participating in the reaction are all equal to 1, rewrite as ΔGΘ=-nFErΘ     (1-2) In the formula: Er is the reversible electromotive force (or reversible potential) of the battery reaction; ΔG […]

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