A versatile route to metal oxide nanoparticles impregnated in carbon matrix for electrochemical energy storage
A versatile route to metal oxide nanoparticles impregnated in carbon matrix for electrochemical energy storage
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浸渍在碳基质中用于电化学储能的金属氧化物纳米粒子的通用途径
DOI：
10.1016/j.cej.2020.126461
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发表时间：
2021-01
影响因子：
15.1
通讯作者：
Yeru Liang
中科院分区：
文献类型：
--
作者：
Jing Peng;Weicai Zhang;Lidong Chen;Tianlai Wu;Mingtao Zheng;Hanwu Dong;Hang Hu;Yong Xiao;Yingliang Liu;Yeru Liang
具有紧密耦合MO/C界面结构的金属氧化物/碳（MO/C）复合材料具有良好的协同效应和结构稳定性，是一种很有前途的电化学储能电极材料。然而，现有的合成路线已不能完全满足结构可控的MO/C复合材料多用途设计和合成的需要。在这里，我们提出了一种通用的合成策略，用于多种由金属氧化物纳米颗粒紧密浸渍在碳基体中的MO/C复合材料的通用合成。利用聚多巴胺优异的粘附和包覆能力，可以在不同的底物上进行原位约束反应形成金属离子-聚多巴胺无机-有机杂化物，经碳化处理后可转化为紧密嵌入碳框架的MO纳米颗粒。目前的合成策略是高度通用的，可以通过使用不同的衬底将各种MO纳米颗粒（如Fe2O3， CoO, NiO, Mn3O4, MoO2, VOx）整合到不同尺寸的碳基体中（如1D空心棒，2D片状和3D网状）。MO/C复合材料具有良好的组织结构，作为钾离子电池的负极材料，具有优异的钾离子存储性能。提出的策略为促进除钾离子电池外用于催化和其他储能领域的先进碳基功能材料的发展提供了一个简单而通用的途径。
Metal oxide/carbon (MO/C) composites with an intimate coupling MO/C interface structure are promising electrode materials for electrochemical energy storage devices because of their valuable synergistic effects and structural stability. However, the existing synthetic routes could not fully meet the needs of versatile design and synthesis of MO/C composites with controllable structure. Here we propose a general synthetic strategy for versatile synthesis of various MO/C composites composed of metal oxide nanoparticles tightly impregnated in the carbon matrix. The utilization of polydopamine with excellent adhesive and coating capability allows anin situand confined reaction to form metal ion–polydopamine inorganic–organic hybrid on various substrates, which can be converted to MO nanoparticles intimately embedded in carbon framework after a carbonization treatment. The present synthetic strategy is highly versatile for incorporating various MO nanoparticles, such as Fe2O3, CoO, NiO, Mn3O4, MoO2, VOx, into the carbon matrix with diverse dimensions (e.g., 1D hollow rod, 2D sheet, and 3D network) through employing different substrates. Profiting from the well-organized structure, the resulting MO/C composites exhibit extraordinary potassium ion storage performance when used as anode materials of potassium ion battery. The proposed strategy provides a facile and versatile avenue for boosting the development of advanced carbon-based functional materials for catalysis and other energy storage fields besides potassium ion battery.
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