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Electrochemical Activity of Hematite Phase in Full-Cell Li-ion Assemblies

机译：全电池锂离子组件中赤铁矿相的电化学活性

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摘要

Exploring negative electrodes for high-performance Li-ion power packs and related issues that are hampering their commercialization is a particularly important topic of research. This study investigates the electrochemical activity of low-cost and typical conversion-type hematite (-Fe2O3) anodes in practical assemblies, namely, full-cell configurations. Numerous studies have reported improvements in the electrochemical activity of -Fe2O3 in half cells with Li by tuning the morphology or formulating composites with carbonaceous materials. However, these studies are not sufficient to market them for practical assemblies with conventional cathodes like LiCoO2, LiMn2O4, LiFePO4 and its derivatives, mainly because of large polarization problems, such as, hysteresis, irreversible capacity loss, volume variation, and capacity fading. Eliminating these issues in the fabrication of full cells is necessary, and this study reviews relevant research activities and discusses future prospects in the field.
机译：探索用于高性能锂离子动力电池的负极以及阻碍其商业化的相关问题是一个特别重要的研究课题。这项研究调查了低成本和典型的转换型赤铁矿（-Fe2O3）阳极在实际组件中的电化学活性，即全电池配置。大量研究报告称，通过调节形态或与含碳材料配制复合材料，可以改善含锂半电池中-Fe2O3的电化学活性。但是，这些研究不足以将它们推销到具有常规阴极（如LiCoO2，LiMn2O4，LiFePO4及其衍生物）的实际组件上，这主要是因为存在较大的极化问题，例如磁滞，不可逆容量损失，体积变化和容量衰减。消除全电池制造过程中的这些问题是必要的，本研究回顾了相关的研究活动并讨论了该领域的未来前景。

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