Synthesis of the New High Entropy Alloy and Its Application in Energy Conversion and Storage

Heting Zhou,Jiangwei He

doi:10.3389/fenrg.2020.00073

Heting Zhou, Jiangwei He

Open Access

https://doi.org/10.3389/fenrg.2020.00073

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Abstract

In order to explore the methods of energy saving and promoting energy regeneration, this paper presents the synthesis and application of new high energy alloy materials in energy conversion and storage. A new type of high entropy alloy material was prepared by analyzing its high strength, tempering resistance and softening resistance. The electrochemical properties of the new type of high entropy alloy were studied according to its microstructure and as cast structure. The experimental results show that compared with fesn2, the new high entropy alloy material has greater advantages in capacity, electrochemical performance, capacity stability and magnification in the process of cyclic charging, at low annealing temperature, the solid Co nanoparticles are further transformed into hollow Co3O4 nanospheres by the kirkentel effect on the nanoscale. NC- Co3O4 nanocomposites as zinc air battery cathodes exhibit excellent OER and ORR properties: low overpotential 352 mv, high initial reduction potential 0.91 v and half wave potential 0.87 v, high open circuit voltage 1.44 v, capacitance 387.2 mah/g and excellent cycle stability. Nico bimetallic phosphide nanotubes derived from the high entropy alloy-74 are efficient electrocatalysts for water decomposition.

Highlights

With the rapid growth of population and economy, the huge global energy consumption has led to the unsustainable development of fossil fuels, resulting in serious environmental problems due to the excessive development and use of fossil fuels
Electrode materials largely determine the efficiency of an electrochemical energy storage and conversion device (Michael et al, 2017)
Based on the above problems, this paper presents the synthesis of new high entropy alloy and its application in energy conversion and energy storage

Summary

INTRODUCTION

With the rapid growth of population and economy, the huge global energy consumption has led to the unsustainable development of fossil fuels, resulting in serious environmental problems due to the excessive development and use of fossil fuels. Considering the practical application, it is very important to develop new electrode materials with high performance (Wang et al, 2016). Wang et al Mixed ZIF-8 nanoparticles with polyacrylonitrile (PAN) solution, prepared ZIF-8 / PAN fiber by electrospinning, and calcined at 500◦C under nitrogen protection to obtain the high entropy alloy porous carbon material. It is reviewed the research results of the high energy alloy in recent years, including its organizational structure and performance, as well as its application in super capacitors and fuel cells.

MATERIALS AND METHODS

Findings

CONCLUSIONS AND PROSPECT