“Faraday Cage” Induced Anion-Confined Interface Enables Industrially Compatible Microsized Silicon Anodes

Ziyun Zhao; Jingshuo Zhang; Jiawei Shi; Fanqi Chen; Yong Guo; Siyuan Pan; Yingxin Liu; Xiangze Xin; Yun Tian; Zhen Zhou; Shichao Wu; Zhe Weng; Quan-Hong Yang

doi:10.1021/acsenergylett.4c01517

journal article·2024-08-09

“Faraday Cage” Induced Anion-Confined Interface Enables Industrially Compatible Microsized Silicon Anodes

Ziyun Zhao, Jingshuo Zhang, Jiawei Shi, Fanqi Chen, Yong Guo, Siyuan Pan, Yingxin Liu, Xiangze Xin, Yun Tian, Zhen Zhou, Shichao Wu, Zhe Weng, Quan-Hong Yang

ACS Energy Letters· Volume 9· Issue 8

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Source abstract

Abstract

The anion-derived inorganic-rich solid electrolyte interphase (SEI) provides highly desirable protection for anodes; however, it is hardly formed in commercial electrolytes due to the electromigration of free anions away from anodes under the charging electric field. High-concentration electrolytes are capable of curing this issue, but they are economically impractical. Here, we pioneer an industrially compatible approach to shield the electric field by engineering a surface “Faraday cage” from a polymer matrix electrostatically integrated with a weakly dissociated salt. An anion-confined interphase (ACI) is produced on the representative silicon microparticles (SiMPs). The ACI enables a sustainable anion-enriched microenvironment, which promotes the participation of anions in the Li + solvation sheath and guarantees more anion reduction to the inorganic-rich SEI upon long cycling stability at a high areal capacity (∼4 mAh cm –2 ). This approach offers a straightforward yet practical solution to SEI innovation in commercial batteries.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage Polymers

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced battery technologies research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, National Industry-Education Integration Platform of Energy Storage, and Collaborative Innovation Centre of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China

Interdisciplinary Research Center for Sustainable Energy Science and Engineering (IRC4SE2), School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China

Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China

Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China

Tianmu Lake Institute of Advanced Energy Storage Technologies Liyang, Jiangsu 213300, China

Funding

National Key Research and Development Program of China · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Haihe Laboratory of Sustainable Chemical Transformations

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