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Utilizing nanoscale particulate matter from the combustion of diesel fuels as a carbonaceous anode electrode for Li-ion batteries
Resources, Conservation and Recycling ( IF 13.2 ) Pub Date : 2021-10-22 , DOI: 10.1016/j.resconrec.2021.105972
Darrell Gregory , Sisi Yang , Cody Massion , Matthew Mecklenburg , Indu Aravind , Mileva Radonjic , Stephen Cronin , Ömer Özgür Çapraz

According to the Environmental Protection Agency's National Emissions Inventory Report, hundreds of thousands of tons of particulate matter (PM2.5) are released by diesel combustion per year (Enviromental Protection Agency 2020; Hammer et al., 2020). The toxic PM2.5 air pollution causes serious public health problems and is responsible for millions of worldwide deaths each year (Apte et al., 2015). In this study, we investigate the electrochemical energy storage capability of annealed soot PM originating from diesel exhaust. Soot composite electrodes were utilized as anode electrodes and cycled against Li counter electrodes. X-ray diffraction and Raman spectroscopy showed the graphitized carbon structure of the annealed soot particles. The cycle life and rate capability of the electrodes were investigated via galvanostatic cycling tests. The electrodes exhibited excellent rate performance with discharge capacities of 235, 195, 150, 120, and 80 mAh/g when cycled at rates of 1C, 2C, 5C, 10C, and 20C, respectively. The electrode demonstrated an initial discharge capacity of 154 mAh/g at a 4C rate with a capacity retention of almost 77% after 500 cycles. Raman analysis confirms the retention of structural ordering in the soot carbon after 500 cycles. Kinetic analysis, obtained through cyclic voltammetry at different scan rates, indicates pseudocapacitive charging behavior in the soot composite electrode. Our study provides a viable pathway towards a sustainable energy environment by converting an abundant toxic pollutant into a valuable electrode material for Li-ion batteries.



中文翻译:

利用来自柴油燃料燃烧的纳米级颗粒物作为锂离子电池的碳质阳极

根据环境保护署的国家排放清单报告,柴油燃烧每年会释放数十万吨颗粒物 (PM 2.5 )(环境保护署 2020;Hammer 等人,2020)。有毒的 PM 2.5空气污染导致严重的公共卫生问题,每年导致全球数百万人死亡(Apte 等,2015)。在这项研究中,我们研究了源自柴油机尾气的退火烟尘 PM 的电化学储能能力。烟灰复合电极用作阳极电极并与锂对电极进行循环。X 射线衍射和拉曼光谱显示了退火烟灰颗粒的石墨化碳结构。通过恒电流循环测试研究了电极的循环寿命和倍率性能。当在 1C、2C、5C、10C 和 20C 倍率下循环时,电极表现出优异的倍率性能,放电容量分别为 235、195、150、120 和 80 mAh/g。该电极在 4C 倍率下的初始放电容量为 154 mAh/g,500 次循环后容量保持率接近 77%。拉曼分析证实了 500 次循环后碳烟中结构有序的保留。通过循环伏安法在不同扫描速率下获得的动力学分析表明烟灰复合电极中的赝电容充电行为。我们的研究通过将丰富的有毒污染物转化为锂离子电池的宝贵电极材料,为实现可持续能源环境提供了一条可行的途径。表示烟灰复合电极中的赝电容充电行为。我们的研究通过将丰富的有毒污染物转化为锂离子电池的宝贵电极材料,为实现可持续能源环境提供了一条可行的途径。表示烟灰复合电极中的赝电容充电行为。我们的研究通过将丰富的有毒污染物转化为锂离子电池的宝贵电极材料,为实现可持续能源环境提供了一条可行的途径。

更新日期:2021-10-24
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