Research Progress of Biochar in Energy Storage

Abstract

In recent years, the introduction of carbon peaking and carbon neutral policies has placed new demands on clean energy utilization and energy storage devices. The limited reserves of traditional fossil energy sources and the environmental impact of their use have forced mankind to utilize renewable alternative energy sources such as hydro, tidal, biomass. And how biochar is used in the realm of energy storage has become more and more common. Based on the characteristics of biochar materials, this paper analyzes the research progress of how biochar is used in the realm of energy storage. The results show that biochar electrode materials have high charge/discharge energy density, long cycle life and high reversible capacity in supercapacitors. In lithium-sulfur batteries are characterized by easy processing, lower cost, environmental friendliness, and high conductivity. In addition, in response to the current state of research, the article analyzes the shortcomings of biochar applications and proposes solutions for adjusting the pore structure of the biochar material, improving the charge transportation ability and thus increasing the specific surface area, doping some other heteroatoms to introduce excellent functional groups. The article explores the research progress of biochar when it comes to energy storage and contributes to the future development of biochar when it comes to green development and energy storage.