Smart Magnetic Interaction Promotes Efficient and Green Production of High-Quality Fe3O4@Carbon Nanoactives for Sustainable Aqueous Batteries,ACS Sustainable Chemistry & Engineering

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Smart Magnetic Interaction Promotes Efficient and Green Production of High-Quality Fe3O4@Carbon Nanoactives for Sustainable Aqueous Batteries
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-11-30 00:00:00 , DOI: 10.1021/acssuschemeng.7b03078
Jian Jiang _{1,

2} , Yani Liu _{1,

2} , Linpo Li _{1,

2} , Jianhui Zhu ₃ , Maowen Xu _{1,

2} , Chang Ming Li _{1,

2}

Affiliation

Efficient and green production of monodispersed Fe₃O₄@carbon (C) nanoactives for commercial aqueous battery usage still remains a great challenge due to issues related to tedious hybrid fabrication and purification procedures. Herein, we put forward an interesting applicable synthetic strategy via a general polymeric process and simple magnetic purification treatments, enabling low-cost and massive production of high-quality Fe₃O₄@C hybrids. In such core–shell configurations, all Fe₃O₄ nanoparticles are tightly encapsulated in permeable N-doped C nanoreactors, showing notable nanostructured superiorities as feasible anodes for aqueous batteries. When tested, the Fe₃O₄@C nanoactives exhibit outstanding anodic performance comprising pretty high electrochemical activity/capacity, greatly prolonged cyclic lifespan in contrast to bare Fe₃O₄ counterparts, and prominent rate capabilities. The as-assembled Ni/Fe full cells can even deliver a high energy/power density up to ∼135 Wh kg^–1/11.5 kW kg^–1, further demonstrating their good potential in practical applications. Our smart magnetic purification strategy may hold great promise in addressing critical issues of producing high-quality and affordable Fe₃O₄@C hybrids, not only for energy-storage fields but also in other broad ranges covering catalysts and biosensors.

中文翻译：

智能电磁相互作用促进高效和绿色生产高质量的Fe ₃ O ₄ @碳纳米活性物质，用于可持续的水电池

由于与繁琐的混合制造和纯化程序有关的问题，用于商业水性电池使用的单分散Fe ₃ O ₄ @碳（C）纳米活性物质的高效和绿色生产仍然是一个巨大的挑战。在这里，我们通过常规的聚合工艺和简单的磁提纯处理提出了一种有趣的适用合成策略，从而可以低成本，大量生产高质量的Fe ₃ O ₄ @C杂化物。在这种核-壳结构中，所有Fe ₃ O ₄纳米颗粒都被紧密封装在可渗透的N中。掺杂的C纳米反应器，显示出明显的纳米结构优势，可作为水性电池的可行阳极。经测试，Fe ₃ O ₄ @C纳米活性剂表现出出色的阳极性能，包括相当高的电化学活性/容量，与裸露的Fe ₃ O ₄相比，循环寿命大大延长，并且速率性能显着。组装好的镍/铁全电池甚至可以提供高达135 Wh kg ^–1 /11.5 kW kg ^–1的高能量/功率密度，进一步证明了它们在实际应用中的良好潜力。我们的智能磁净化策略在解决生产高质量和负担得起的Fe _3的关键问题方面可能具有广阔的前景O ₄ @C杂种，不仅用于储能领域，还用于其他广泛范围的催化剂和生物传感器。

更新日期：2017-11-30

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