Waste Biomass-Derived Carbon Anode for Enhanced Lithium Storage
Waste Biomass-Derived Carbon Anode for Enhanced Lithium Storage
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用于增强锂储存的废弃生物质碳阳极
DOI：
10.1021/acsomega.0c02389
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发表时间：
2020
期刊：
影响因子：
4.1
通讯作者：
V. Pol
中科院分区：
文献类型：
--
作者：
T. Yokokura;Jassiel R. Rodriguez;V. Pol
由于人口的增加，对食物的需求也增加了；因此，利用生物质废料制成的电池电极材料提供了一个有吸引力的机会。不幸的是，这样的电池很少能保持与目前最先进的技术相媲美的容量。然而，由废弃的鳄梨种子合成的阳极在100次循环中具有高的循环稳定性，并提供与石墨相当的容量，在100 mAg-1的电流密度下约为315 mAHg-1，在稳定性和容量方面都明显优于石墨烯。这种新型电极在不使用任何添加剂或掺杂杂原子的情况下，利用电容驱动机制提供了无定形碳等容量，贡献了54%的锂离子存储。这使得废生物质衍生的阳极克服了4.38x10-11cm2 S-1的低表观扩散系数。通过用鳄梨种子制造电池阳极，废物流可以被重新引导到创造有价值的可再生能源储存资源。
Due to increased populations, there is an increased demand for food; thus, battery electrode materials created from waste biomass provide an attractive opportunity. Unfortunately, such batteries rarely sustain capacities comparable to current state-of-the-art technologies. However, an anode synthesized from waste avocado seeds provides high cycling stability over 100 cycles and provides comparable capacity to graphite, around 315 mAh g–1 at 100 mA g–1 current density, and readily outperforms graphene in terms of both stability and capacity. This novel electrode provides such capacities as an amorphous carbon without the use of any additives or doped heteroatoms by utilizing capacitance-driven mechanisms to contribute to 54% of its lithium-ion storage. This allows the waste biomass-derived anode to overcome its low apparent diffusion coefficient of 4.38 × 10–11 cm2 s–1. By creating battery anodes from avocado seeds, waste streams can be redirected into creating valuable, renewable energy storage resources.