Double-network gel-enabled bicontinous silicon-based nanoporous anodes with boosted lithium-storage performance

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-06-09 DOI:10.1016/j.materresbull.2025.113614

Lin Yang , Ziping Zhan , Jihao Yang , Xinyi Shao , Jingxue Yu , Cen Wang , Zhe Li , Xin Cao , Yawen Tang , Ping Wu

引用次数: 0

Abstract

The continuous and conformal carbon coating on nanoporous silicon is very effective in enhancing the structural stability and charge-transport capability of silicon-based anodes. Herein, a double-network gel-derived magnesiothermic reduction route has been developed for continuously coating carbon on nanoporous silicon, yielding bicontinuous Si/Mn₄Si₇@C (Si–Mn–C) ternary material. Thanks to the conformal carbon coating, inactive Mn₄Si₇ hybridization, and gel-derived nanoporous structure, the bicontinuous Si–Mn–C anode manifests good cycling stability (1445 mA h g^-1 after 100 cycles at 0.5 A g^-1) and high rate performance (1305 and 1108 mA h g^-1 at 5 and 10 A g^-1, respectively).

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具有增强锂存储性能的双网络凝胶双连续硅基纳米多孔阳极

在纳米多孔硅表面涂覆连续的适形碳膜，可以有效地提高硅基阳极的结构稳定性和电荷输运能力。本文开发了一种双网络凝胶衍生的镁热还原路线，将碳连续涂覆在纳米多孔硅上，得到双连续Si/Mn4Si7@C （Si - mn - c）三元材料。由于共形碳涂层、非活性Mn4Si7杂化和凝胶衍生的纳米孔结构，双连续Si-Mn-C阳极具有良好的循环稳定性（在0.5 A g-1下循环100次后为1445 mA h g-1）和高倍率性能（在5和10 A g-1下分别为1305和1108 mA h g-1）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.