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Comparative evaluation of MAX, MXene, NanoMAX, and NanoMAX-derived-MXene for microwave absorption and Li ion battery anode applications
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/20 , DOI: 10.1039/c9nr10980c Arundhati Sengupta 1, 2, 3 , B. V. Bhaskara Rao 3, 4, 5 , Neha Sharma 1, 2, 3 , Swati Parmar 1, 2, 3 , Vinila Chavan 1, 2, 3 , Sachin Kumar Singh 1, 2, 3 , Sangeeta Kale 3, 4, 5 , Satishchandra Ogale 1, 2, 3, 6, 7
Nanoscale ( IF 5.8 ) Pub Date : 2020/03/20 , DOI: 10.1039/c9nr10980c Arundhati Sengupta 1, 2, 3 , B. V. Bhaskara Rao 3, 4, 5 , Neha Sharma 1, 2, 3 , Swati Parmar 1, 2, 3 , Vinila Chavan 1, 2, 3 , Sachin Kumar Singh 1, 2, 3 , Sangeeta Kale 3, 4, 5 , Satishchandra Ogale 1, 2, 3, 6, 7
Affiliation
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MAX and MXene phases possess unique physical properties, encompassing the realms of both ceramics and metals. Their nanolaminated layered configuration, high anisotropic electrical conductivity, and ability to scatter electromagnetic radiation are beneficial in multiple applications. Herein, detailed applications of MAX and MXene are studied in the fields of microwave absorption and Li ion batteries (LIB). In particular, coatings based on MAX, MXene, ball-milled NanoMAX, and NanoMAX-derived-MXene (MXene-N) and their composites are examined in terms of their comparative efficacy for the aforesaid applications. NanoMAX and MXene-N based composites with graphite exhibit superior performance with specific reflection loss values (representing absorbance when measured with metal-backing) of −21.4 and −19 dB cm3 g−1, respectively, as compared to their bulk counterparts, that too with a low density (0.63 g cm−3) and very small thickness (0.03 mm). These performance improvements in absorbance in only 30 μm coatings can be attributed to reflective losses compounded with multiple internal reflections within the nanocomposite intensified by dielectric losses, arising from high interface density. The pristine samples were also studied for their performance as Li ion battery anodes. Herein, MXene-N exhibits the best performance with a specific capacity of 330 mA h g−1 at 100 mA g−1 and excellent cycling stability tested up to 1000 cycles.
中文翻译：
MAX，MXene，NanoMAX和NanoMAX衍生的MXene在微波吸收和锂离子电池负极应用中的比较评估
MAX和MXene相具有独特的物理特性，涵盖了陶瓷和金属领域。它们的纳米层状结构，高各向异性导电性和散射电磁辐射的能力在多种应用中都是有益的。本文中，在微波吸收和锂离子电池（LIB）领域研究了MAX和MXene的详细应用。特别是，针对上述应用，比较了基于MAX，MXene，球磨的NanoMAX和Nanomax衍生的MXene（MXene-N）的涂料及其复合材料。具有石墨的NanoMAX和MXene-N基复合材料表现出卓越的性能，其特定的反射损耗值（用金属背衬测量时的吸光度）为-21.4和-19 dB cm 3 g-1，与其大体积的同类产品相比，密度也很低（0.63 g cm -3），厚度很小（0.03 mm）。在仅30μm的涂层中，这些吸收率性能的提高可归因于反射损耗，以及由于高界面密度引起的介电损耗而加剧的纳米复合材料内部多次内部反射。还研究了原始样品作为锂离子电池阳极的性能。此处，MXene-N表现出最好的性能，在100 mA g -1时的比容量为330 mA hg -1，并且经过1000次循环测试具有出色的循环稳定性。
更新日期：2020-04-17
中文翻译：
MAX，MXene，NanoMAX和NanoMAX衍生的MXene在微波吸收和锂离子电池负极应用中的比较评估
MAX和MXene相具有独特的物理特性，涵盖了陶瓷和金属领域。它们的纳米层状结构，高各向异性导电性和散射电磁辐射的能力在多种应用中都是有益的。本文中，在微波吸收和锂离子电池（LIB）领域研究了MAX和MXene的详细应用。特别是，针对上述应用，比较了基于MAX，MXene，球磨的NanoMAX和Nanomax衍生的MXene（MXene-N）的涂料及其复合材料。具有石墨的NanoMAX和MXene-N基复合材料表现出卓越的性能，其特定的反射损耗值（用金属背衬测量时的吸光度）为-21.4和-19 dB cm 3 g-1，与其大体积的同类产品相比，密度也很低（0.63 g cm -3），厚度很小（0.03 mm）。在仅30μm的涂层中，这些吸收率性能的提高可归因于反射损耗，以及由于高界面密度引起的介电损耗而加剧的纳米复合材料内部多次内部反射。还研究了原始样品作为锂离子电池阳极的性能。此处，MXene-N表现出最好的性能，在100 mA g -1时的比容量为330 mA hg -1，并且经过1000次循环测试具有出色的循环稳定性。
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