Petroleum pitch derived hard carbon via NaCl-template as anode materials with high rate performance for sodium ion battery
作者机构：Key Laboratory of Superlight Materials and Surface Technology of Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Hunan Hongshan New Energy Technology Co.LtdYiyang 413000China
出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)
年 卷 期：2024年第18卷第7期
页 面：1-10页
核心收录：
基 金：supported by Heilongjiang Province Key R&D Program(Grant No.GA22A014)
主 题：petroleum pitch hard carbon sodium-ion batteries high rate recyclable template
摘 要：Sodium-ion batteries(SIBs)have garnered significant interest in energy storage due to their similar working mechanism to lithium ion batteries and abundant reserves of sodium *** facile synthesis of a carbon-based anode materials with capable electrochemical performance is key to promoting the practical application of *** this work,a combination of petroleum pitch and recyclable sodium chloride is selected as the carbon source and template to obtain hard carbon(HC)anode for *** times and temperatures are optimized by assessing the sodium ion storage behavior of different HC *** optimized HC exhibits a remarkable capacity of over 430 mAh·g^(-1) after undergoing full activation through 500 cycles at a density of current of 0.1 A·g^(-1).Furthermore,it demonstrates an initial discharge capacity of 276 mAh·g^(-1) at a density of current of 0.5 A·g^(-1).Meanwhile,the optimized HC shows a good capacity retention(170 mAh·g^(-1) after 750 cycles)and a remarkable rate ability(166 mAh·g^(-1) at 2 A·g^(-1)).The enhanced capacity is attributed to the suitable degree of graphitization and surface area,which improve the sodium ion transport and storage.
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