In recent years, lithium-ion batteries (LIBs) have not only been widely used for consumer electronics, but have also proved promising for electric vehicles, owing to their unique advantages, such as high energy and power density, no memory effect and environmental friendliness [1, 2, 3].
To meet the demands of high-energy storage for practical applications in electric vehicles (EVs) and hybrid electric vehicles (HEVs), much attention has been paid to lithium-ion batteries (LIBs) because of their distinct advantages, e.g., their large specific capacity, high energy density, long cycle life, and environmental friendliness [1, 2, 3].
Furthermore, as a cathode material, sulfur has the advantages of natural abundance, low cost, and environmental friendliness [3].
The use of lipases as biocatalysts for biodiesel production has been of great interest due to its environmental friendliness [9, 10, 11, 12].
Manganese oxide is also a very promising material, due to its excellent cycling stability, low cost, and environmental friendliness [19, 20].
The highest level of satisfaction with the ED was related to physicians' courtesy (83.1%), and the lowest level was related to service men's friendliness (15.4%).
In this field, zinc oxide represents a promising photocatalyst for its high catalytic activity, low cost, and environmental friendliness [3, 4].
Thus, Ni/MH batteries are widely used in stationary applications, consumer electronics, power tools, hybrid and full electric road and rail vehicles because of its durability, abuse tolerance, compact size, and environmental friendliness [5, 6, 7, 8].
PPy attracted increasing attention over the past decades because of their remarkable electrical conductivity, good electrocatalytic properties, cost-effective processability, lightweight, tunable mechanical and magnetic properties, and environmental friendliness [127].
A number of hydrogen-oxygen-operated fuel cell designs already exist; solid oxide fuel cells (SOFCs) are one of the most attractive fuel cell types due to their high energy efficiency and environmental friendliness [4].
Thanks to the earth abundance and environmental friendliness, Ni3Si2O5(Ohas has been widely utilized as adsorbents for heavy metal ions and organic dyes, carriers for drug release, molecular sieves, and catalyst supports [10 14].
