Theoretical mechanisms and experimental validation of hard vs soft carbon coatings for enhanced silicon anode performance

doi:10.1016/j.cej.2025.161385

IMR OpenIR

	Theoretical mechanisms and experimental validation of hard vs soft carbon coatings for enhanced silicon anode performance
	Zhao, Peng 1,2; Liu, Cai 1,2; Liu, Boyuan 1,2; Lu, Keren 1,2; Jing, Haiyan 1,2; Xia, Xifeng 1,2; Xia, Mingzhu 1,2; Han, Shuai 3; Mandler, Daniel 4; Lei, Wu 1,2; Guo, Qiubo 1,2; Hao, Qingli 1,2
通讯作者	Lei, Wu(leiwuhao@njust.edu.cn) ; Guo, Qiubo(qbguo@njust.edu.cn) ; Hao, Qingli(qinglihao@njust.edu.cn)
	2025-04-01
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	509 页码:10
摘要	Silicon (Si)-based anodes are finding their niche in high-energy Li-ion batteries due to their overwhelming lead on capacity compared to graphite anodes. However, the low conductivity and drastic volume expansion during the lithiation process block their large-scale applications. Although the carbon coating methods have been investigated extensively and acknowledged as the most effective strategies, so far, their mechanisms are still only roughly attributed to the high conductivity and stability of the amorphous carbon shells. Especially the unique functional characteristics of hard carbon (HC) and soft carbon (SC) remain elusive, thus restricting the full utilization of Si. In this perspective, under the guidance of theoretical calculation and the assistance of characterization, we analyzed the various attributes of ionic-electronic conductivity, electrolyte selective permeation, and mechanical stability of the HC and SC coatings during the de-/lithiation processes of electrodes. It is concluded that the SC-coated Si demonstrates superior comprehensive electrochemical performance compared to the HC-coated Si. This work offers a comprehensive insight into the correlation between the physicochemical properties of various carbon coatings and the electrochemical performance of their composites. By elucidating these relationships, it paves the way for the rational design, selection, and optimization of carbon-coated Sibased materials, facilitating their application across diverse scenarios in grid-scale energy storage.
关键词	HC/SC coatings Ionic-electronic conductivity Electrolyte selective permeation Mechanical properties Guidance of theoretical calculation
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; program for Science and Technology Innovative Research Team in Universities of Jiangsu Province, China
DOI	10.1016/j.cej.2025.161385
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52161145503] ; National Natural Science Foundation of China[22309083] ; Fundamental Research Funds for the Central Universities[30923010210] ; program for Science and Technology Innovative Research Team in Universities of Jiangsu Province, China
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001446417500001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191924
专题	中国科学院金属研究所
通讯作者	Lei, Wu; Guo, Qiubo; Hao, Qingli
作者单位	1.Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Minist Educ, Nanjing 210094, Jiangsu, Peoples R China 2.Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Minist Educ, Nanjing 210094, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Hebrew Univ Jerusalem, Inst Chem, IL-9190401 Jerusalem, Israel
推荐引用方式 GB/T 7714	Zhao, Peng,Liu, Cai,Liu, Boyuan,et al. Theoretical mechanisms and experimental validation of hard vs soft carbon coatings for enhanced silicon anode performance[J]. CHEMICAL ENGINEERING JOURNAL,2025,509:10.
APA	Zhao, Peng.,Liu, Cai.,Liu, Boyuan.,Lu, Keren.,Jing, Haiyan.,...&Hao, Qingli.(2025).Theoretical mechanisms and experimental validation of hard vs soft carbon coatings for enhanced silicon anode performance.CHEMICAL ENGINEERING JOURNAL,509,10.
MLA	Zhao, Peng,et al."Theoretical mechanisms and experimental validation of hard vs soft carbon coatings for enhanced silicon anode performance".CHEMICAL ENGINEERING JOURNAL 509(2025):10.