Yin Hong, Liu Yuan, Yu Neng, Qu Hong-Qing, Liu Zhitian, Jiang Renzhi, Li Chong, Zhu Ming-Qiang
Wuhan National Laboratory for Optoelectronics (WNLO), School of Optics and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, School of Chemistry, Biology and Materials Science, East China University of Technology, Nanchang 330013, China.
ACS Omega. 2018 Dec 17;3(12):17466-17473. doi: 10.1021/acsomega.8b02446. eCollection 2018 Dec 31.
Two-dimensional layer-structure materials are now of great interest in energy storage devices, owing to their graphene-like structure and high theoretical capacity. Herein, graphene-like molybdenum disulfide (MoS) nanosheets were uniformly grown on carbon fabrics by using a hydrothermal method. They were evaluated as binder-free electrodes for Li-ion batteries (LIBs) and supercapacitors. As expected, long cycling life and high capacity/capacitance are achieved. When used as self-standing electrodes for LIBs, they deliver a high area capacity of ∼0.5 mAh/cm even after 400 cycles and remarkable rate capability in the charge/discharge potential range of 1-3 V. In addition, a three-dimensional integrated electrode of the MoS nanosheet exhibits a high capacitance of 103.5 mF/cm and long cycling stability up to at least 15 000 cycles at a current density of 3 mA/cm for supercapacitors. The great cycling stability of MoS in supercapacitors is promising in the enhancement of cycling stability through their integration with other materials as alternatives to graphene in some special fields.
二维层状结构材料因其类石墨烯结构和高理论容量，目前在储能器件领域备受关注。在此，通过水热法在碳纤维织物上均匀生长出类石墨烯二硫化钼（MoS）纳米片。它们被评估用作锂离子电池（LIBs）和超级电容器的无粘结剂电极。正如预期的那样，实现了长循环寿命和高容量/电容。当用作LIBs的自支撑电极时，即使在400次循环后，它们仍能提供约0.5 mAh/cm的高面积容量，并且在1-3 V的充放电电位范围内具有出色的倍率性能。此外，MoS纳米片的三维集成电极对于超级电容器而言，在3 mA/cm的电流密度下展现出103.5 mF/cm的高电容以及长达至少15000次循环的长循环稳定性。MoS在超级电容器中出色的循环稳定性，有望通过与其他材料集成，在某些特殊领域作为石墨烯的替代品来增强循环稳定性。
