期刊论文

Lihong Xue<&wdkj&>Wuxing Zhang

英文

Journal of Electroanalytical Chemistry

1572-6657

2023

929

117093

10.1016/j.jelechem.2022.117093

Fig. 1 presents the schematic illustration of the structure evolution of the SEI layer on Si@PAN-S and bare Si particles. The bare Si is apt to pulverize after cycling and covered by a thick SEI layer on the surface, which leads to uneven Li+ transport. In contrast, the flexible PAN-S layer on the Si surface can relieve the volume expansion and maintain particle integrity, and the thin SEI layer favors uniform Li+ transport. Fig. 2a shows the XRD results of the Si@PAN-S and bare Si, where the

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The instability of the solid-liquid interface is a crucial problem of the silicon (Si) anode, which seriously affects the performance of the battery. Therefore, constructing an artificial interface for silicon (Si) anodes is an effi-cient way to restrain the volume expansion and reduce the side reactions. Herein, we develop a poly(acryloni-trile)-Sulfur (PAN-S) based artificial solid-electrolyte interphase (SEI) film on Si, which significantly improves the cycling and rate performance owing to its mechanical strength and ion transport ability. The PAN-S coated silicon anode exhibits outstandin...