一锅法合成多金属硫化物/碳复合材料及其储锂性能  

A one-pot method to prepare a multi-metal sulfide/carbon composite with a high lithium-ion storage capability

作　　者：张伟财 杨朝炜 胡书宇 方亚伟 林晓敏 谢卓豪 郑明涛 刘应亮 梁业如 ZHANG Wei-cai;YANG Chao-wei;HU Shu-yu;FANG Ya-wei;LIN Xiao-min;XIE Zhuo-hao;ZHENG Ming-tao;LIU Ying-liang;LIANG Ye-ru(Maoming Branch,Guangdong Laboratory of Lingnan Modern Agriculture,Maoming 525000,China;Key Laboratory for Biobased Materials and Energy of Ministry of Education,College of Materials and Energy,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]岭南现代农业科学与技术广东省实验室茂名分中心,广东茂名525000 [2]华南农业大学材料与能源学院生物基材料与能源教育部重点实验室,广东广州510642

出　　处：《新型炭材料（中英文）》2023年第6期1080-1091,共12页New Carbon Materials

基　　金：茂名实验室自主科研项目(2022ZD002);国家自然科学基金项目(51972121,52373074).

摘　　要：多金属硫化物/碳(MMS/C)复合材料因其良好的结构稳定性、充足的活性位点和有益的协同效应,在能源、催化、传感、环境科学等领域具有良好的应用潜力。然而,MMS/C复合材料繁琐、低效和对环境有害的制备方法制约了其发展。本文报道了一种简易、通用的制备策略合成了系列MMS/C复合材料。该策略的关键是采用了碳源-非碳前驱体一体化的离子交换树脂-金属离子杂化组装体作为构筑单元,可实现均匀的多相有机/无机界面,在高温条件下原位生成封装于碳骨架中的金属硫化物。通过改变金属离子的种类,实现了14种MMS/C复合材料的合成。基于其组分和结构优势,所制MMS/C复合材料表现出高效、快速和持久的锂离子存储性能。其中,ZnS-Co_(9)S_(8)/C复合材料在0.1 A·g^(-1)电流密度下循环600次后仍具有651 mAh·g^(-1)的可逆储锂容量;当电流密度提高20倍时,容量保持率超过54%,展现出优异的倍率性能。本文提出的均一、多相有机/无机界面合成策略有望扩展用于制备其他金属化合物(如金属磷化物、金属硒化物等)/碳复合材料,为多金属化合物/碳复合材料的合成提供有效的途径。Because of their high electrochemical activity,good structural stability,and abundant active sites,multi-metal sulfide/carbon(MMS/C)composites are of tremendous interest in diverse fields,including catalysis,energy,sensing,and environ-mental science.However,their cumbersome,inefficient,and environmentally unfriendly synthesis is hindering their practical applic-ation.We report a straightforward and universal method for their production which is based on homogeneous multi-phase interface engineering.The method has enabled the production of 14 different MMS/C composites,as examples,with well-organized compos-ite structures,different components,and dense heterointerfaces.Because of their composition and structure,a typical composite has efficient,fast,and persistent lithium-ion storage.A ZnS-Co_(9)S_(8)/C composite anode showed a remarkable rate performance and an ex-cellent capacity of 651 mAh·g^(-1) at 0.1 A·g^(-1) after 600 cycles.This work is expected to pave the way for the easy fabrication of MMS/C composites.

关 键 词：多金属硫化物/碳复合材料 简便合成 一锅法 锂离子电池 负极材料 

分 类 号：TQ127.11[化学工程—无机化工]