Enteromorpha prolifera derived carbon supported tin dioxide nanocomposite with high lithium-ion storage performances

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies Pub Date : 2025-09-24 DOI:10.1016/j.susmat.2025.e01684

Jiahui Li, Hui Zeng, Shuo Wan, Xiaojian Liu, Haoyu Yin, Zixi Yang, Hongliang Li, Binghui Xu

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引用次数: 0

Abstract

Enteromorpha prolifera (EP), a notorious marine biomass from offshore green tide, is employed as precursor together with chemical exfoliated graphene oxide (GO) to synthesize a carbon dispersed tin dioxide (SnO₂) nanocomposite. By rationally modulating the interactions between EP, GO and Sn²⁺ in mild water phase, GO is deoxygenated to reduced graphene oxide (RGO) coating layers on EP while Sn²⁺ ions are converted to SnO₂ nanoparticles accommodated by RGO/EP. In the following heat treatment, the intermediate Sn@RGO/EP is converted to the final SnO₂/RGO/EPC nanocomposite, during which the SnO₂ nanocrystals are effectively dispersed by the in-situ formed RGO/EPC carbon framework. As a consequence, the finally engineered SnO₂/RGO/EPC nanocomposite exhibits unique hierarchical microstructure, which enables this sample deliver a stable capacity of about 815.2 mAh·g⁻¹ over 1000 cycles at a high-density current of 1000 mA·g⁻¹ in half cells as well as inspiring full cell performances. The lithium-ion storage behaviors of SnO₂/RGO/EPC have been uncovered. This work demonstrates a feasible choice to fabricate nanocomposite electrode materials from marine biomass.

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高锂离子存储性能的浒苔碳负载二氧化锡纳米复合材料

以产自近海绿潮的海洋生物浒苔（EP）为前驱体，与化学剥落氧化石墨烯（GO）合成碳分散二氧化锡（SnO2）纳米复合材料。通过合理调节EP、GO和Sn2+在温和水相中的相互作用，氧化石墨烯被脱氧成还原氧化石墨烯（RGO）涂层，Sn2+离子被转化成RGO/EP容纳的SnO2纳米粒子。在接下来的热处理过程中，中间产物Sn@RGO/EP转化为最终的SnO2/RGO/EPC纳米复合材料，在此过程中，SnO2纳米晶体被原位形成的RGO/EPC碳骨架有效分散。因此，最终设计的SnO2/RGO/EPC纳米复合材料具有独特的分层结构，这使得该样品能够在1000 mA·g−1的高密度电流下在半电池中提供1000次循环约815.2 mAh·g−1的稳定容量，以及激发全电池性能。揭示了SnO2/RGO/EPC的锂离子存储行为。这项工作证明了利用海洋生物质制备纳米复合电极材料的可行选择。

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来源期刊

Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment

CiteScore

13.40

自引率

4.20%

发文量

158

审稿时长

45 days

期刊介绍： Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.