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首页> 外文期刊>Nanoscale Horizons >A new strategy for developing superior electrode materials for advanced batteries: using a positive cycling trend to compensate the negative one to achieve ultralong cycling stability
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A new strategy for developing superior electrode materials for advanced batteries: using a positive cycling trend to compensate the negative one to achieve ultralong cycling stability

机译：开发用于高级电池的优质电极材料的新策略：利用正循环趋势补偿负电极，以实现超长循环稳定性

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摘要

In this communication, in order to develop superior electrode materials for advanced energy storage devices, a new strategy is proposed and then verified by the (Si@MnO)@C/RGO anode material for lithium ion batteries. The core idea of this strategy is the use of a positive cycling trend (gradually increasing Li-storage capacities of the MnO-based constituent during cycling) to compensate the negative one (gradually decreasing capacities of the Si anode) to achieve ultralong cycling stability. As demonstrated in both half and full cells, the as-prepared (Si@MnO)@C/RGO nanocomposite exhibits superior Li-storage properties in terms of ultralong cycling stability (no obvious increase or decrease of capacity when cycled at 3 A g~(-1) after 1500 cycles) and excellent high-rate capabilities (delivering a capacity of ca. 540 mA h g~(-1) at a high current density of 8 A g~(-1)) as well as a good full-cell performance. In addition, the structure of the electrodes is stable after 200 cycles. Such a strategy provides a new idea to develop superior electrode materials for next-generation energy storage devices with ultralong cycling stabilities.
机译：在此交流中，为了开发用于高级能量存储设备的优质电极材料，提出了一种新策略，然后通过了用于锂离子电池的（Si @ MnO）@ C / RGO阳极材料进行验证。该策略的核心思想是利用正循环趋势（循环过程中逐渐增加MnO基成分的锂存储容量）来补偿负循环趋势（Si阳极容量逐渐减小）以实现超长循环稳定性。正如在半电池和全电池中所证明的那样，就超长循环稳定性而言，制备的（Si @ MnO）@ C / RGO纳米复合材料表现出优异的锂存储性能（在3 A g〜下循环时容量没有明显增加或降低） （-1）在1500次循环后）和出色的高倍率能力（在8 A g〜（-1）的高电流密度下提供约540 mA hg〜（-1）的容量）以及良好的满载电池性能。另外，电极的结构在200次循环后是稳定的。这种策略为开发具有超长循环稳定性的下一代能量存储设备开发优质电极材料提供了新思路。

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