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Mo2C Nanodots Anchored on N‐Doped Porous CNT Microspheres as Electrode for Efficient Li‐Ion Storage
Small Methods ( IF 10.7 ) Pub Date : 2018-10-09 , DOI: 10.1002/smtd.201800287 Bo Yu 1 , Dongxu Yang 1 , Yang Hu 1 , Jiarui He 2 , Yuanfu Chen 1 , Weidong He 1
Small Methods ( IF 10.7 ) Pub Date : 2018-10-09 , DOI: 10.1002/smtd.201800287 Bo Yu 1 , Dongxu Yang 1 , Yang Hu 1 , Jiarui He 2 , Yuanfu Chen 1 , Weidong He 1
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For the first time, red‐blood‐cell‐like porous Mo2C@CNT microspheres are synthesized through a facile and scalable spray‐drying approach. As an anode for the lithium‐ion (Li‐ion) battery (LIB), the Mo2C@CNT hybrid demonstrates superior electrochemical performances with a high reversible capacity of 1065 mAh g−1 after 100 cycles at 0.1 A g−1, a large and stable capacity of 878 mAh g−1 even after 750 cycles at 1.6 A g−1, and large capabilities of 460 and 190 mAh g−1 after 100 cycles even at 8.0 and 16.0 A g−1, respectively, suggesting the outstanding long‐cycle high‐rate performance. The superior Li‐ion storage is attributed to the unique porous hierarchical structure, as constructed with Mo2C nanodots homogeneously and tightly anchored on a porous and highly conductive N‐doped carbon nanotubes (CNTs) microspheric skeleton, which provides abundant electrochemically active sites and facilitates the electron and ion transportation. This work provides a novel, scalable, and cost‐effective route to the hybrid of transition‐metal‐based compounds and carbonaceous nanomaterials as high‐performance electrode for LIBs.
中文翻译：
Mo2C纳米点锚固在N掺杂的多孔CNT微球上，作为高效锂离子存储的电极
首次通过一种简便且可扩展的喷雾干燥方法合成了类似红细胞的多孔Mo 2 C @ CNT微球。作为锂离子（Li-ion）电池（LIB）的阳极，Mo 2 C @ CNT混合动力电池具有出色的电化学性能，在0.1 A g -1下循环100次后具有1065 mAh g -1的高可逆容量，即使在1.6 A g -1下经过750次循环后，仍具有878 mAh g -1的大而稳定的容量，即使在8.0和16.0 A g -1下经过100次循环后仍具有460和190 mAh g -1的大容量分别表明了出色的长期高速率性能。优越的锂离子存储归因于独特的多孔层级结构，该结构由Mo 2 C纳米点均匀且紧密地锚固在多孔且高导电性的N掺杂碳纳米管（CNT）微球骨架上构成，可提供丰富的电化学活性位和促进电子和离子的传输。这项工作为过渡金属基化合物和碳纳米材料作为LIB的高性能电极的混合体提供了一种新颖，可扩展且具有成本效益的途径。
更新日期：2018-10-09
中文翻译：
Mo2C纳米点锚固在N掺杂的多孔CNT微球上，作为高效锂离子存储的电极
首次通过一种简便且可扩展的喷雾干燥方法合成了类似红细胞的多孔Mo 2 C @ CNT微球。作为锂离子（Li-ion）电池（LIB）的阳极，Mo 2 C @ CNT混合动力电池具有出色的电化学性能，在0.1 A g -1下循环100次后具有1065 mAh g -1的高可逆容量，即使在1.6 A g -1下经过750次循环后，仍具有878 mAh g -1的大而稳定的容量，即使在8.0和16.0 A g -1下经过100次循环后仍具有460和190 mAh g -1的大容量分别表明了出色的长期高速率性能。优越的锂离子存储归因于独特的多孔层级结构，该结构由Mo 2 C纳米点均匀且紧密地锚固在多孔且高导电性的N掺杂碳纳米管（CNT）微球骨架上构成，可提供丰富的电化学活性位和促进电子和离子的传输。这项工作为过渡金属基化合物和碳纳米材料作为LIB的高性能电极的混合体提供了一种新颖，可扩展且具有成本效益的途径。
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