Coating asphalt preparation and application in lithium-ion battery anode materials
HUANG Wenwen
Abstract：Lithium-ion batteries,a common rechargeable battery which is widely used in electric vehicles,portable devices,and grid energy storage.As the demand for longer driving ranges continues to grow,lithium-ion batteries are accelerating their development towards higher energy densities.The anode materials play a crucial role in enhan-cing the performance of lithium-ion batteries.The carbon coating formed by the carbonization of asphalt can effectively inhibit direct contact between the anode material and the electrolyte,thereby reducing volume expansion,preventing pulverization and decomposition of the anode material during charge and discharge cycles,and extending the battery's lifespan.This article focuses on the performance indicators,key manufacturing techniques,and electrochemical applications of asphalt coatings.It summarizes the challenges faced in the application of asphalt coatings in lithium-ion batteries and reviews the future challenges the new energy industry must address.The goal is to provide new in-sights for optimizing the application of asphalt coatings in lithium-ion battery anode materials.From the review and a-nalysis,it can be concluded that asphalt coatings,with their excellent conductivity,good lithium intercalation prop-erties,and environmental friendliness,show great potential in the application of lithium-ion batteries.However,im-provements in their mechanical strength and electrochemical performance are needed.Asphalt modification is more beneficial for lithium ion intercalation and deintercalation,making it easier to form a stable SEI layer,thereby impro-ving the battery's cycle life and rate capability.At present,the performance of coated asphalt obtained by different processes is different,and the performance applied to anode materials is also different.The development direction of asphalt-based anode materials should focus on"high performance-functionalization-greenness,"aiming to overcome the battery capacity bottleneck and achieve significant breakthroughs in low-cost energy storage and fast-charging bat-tery fields.Therefore,research on asphalt coatings should focus on their optical properties and coating techniques,while also delving into their electrochemical mechanisms.Future studies should further explore the formation mecha-nisms and functions of interfaces to enhance the performance of lithium-ion batteries.
Keywords：asphalt coatinglithium-ion batteryoptical propertiescoating technologylithium intercalation per-formancequinoline insolublesoftening point
Publication Date：2025-05-30
Pages：7( 91-97 )