TY - JOUR
T1 - Ultrafine MoO2-Carbon Microstructures Enable Ultralong-Life Power-Type Sodium Ion Storage by Enhanced Pseudocapacitance
AU - Zhao, Changtai
AU - Yu, Chang
AU - Zhang, Mengdi
AU - Huang, Huawei
AU - Li, Shaofeng
AU - Han, Xiaotong
AU - Liu, Zhibin
AU - Yang, Juan
AU - Xiao, Wei
AU - Liang, Jianneng
AU - Sun, Xueliang
AU - Qiu, Jieshan
N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21
PY - 2017/8/9
Y1 - 2017/8/9
N2 - The achievement of the superior rate capability and cycling stability is always the pursuit of sodium-ion batteries (SIBs). However, it is mainly restricted by the sluggish reaction kinetics and large volume change of SIBs during the discharge/charge process. This study reports a facile and scalable strategy to fabricate hierarchical architectures where TiO2 nanotube clusters are coated with the composites of ultrafine MoO2 nanoparticles embedded in carbon matrix (TiO2@MoO2-C), and demonstrates the superior electrochemical performance as the anode material for SIBs. The ultrafine MoO2 nanoparticles and the unique nanorod structure of TiO2@MoO2-C help to decrease the Na+ diffusion length and to accommodate the accompanying volume expansion. The good integration of MoO2 nanoparticles into carbon matrix and the cable core role of TiO2 nanotube clusters enable the rapid electron transfer during discharge/charge process. Benefiting from these structure merits, the as-made TiO2@MoO2-C can deliver an excellent cycling stability up to 10 000 cycles even at a high current density of 10 A g−1. Additionally, it exhibits superior rate capacities of 110 and 76 mA h g−1 at high current densities of 10 and 20 A g−1, respectively, which is mainly attributed to the high capacitance contribution.
AB - The achievement of the superior rate capability and cycling stability is always the pursuit of sodium-ion batteries (SIBs). However, it is mainly restricted by the sluggish reaction kinetics and large volume change of SIBs during the discharge/charge process. This study reports a facile and scalable strategy to fabricate hierarchical architectures where TiO2 nanotube clusters are coated with the composites of ultrafine MoO2 nanoparticles embedded in carbon matrix (TiO2@MoO2-C), and demonstrates the superior electrochemical performance as the anode material for SIBs. The ultrafine MoO2 nanoparticles and the unique nanorod structure of TiO2@MoO2-C help to decrease the Na+ diffusion length and to accommodate the accompanying volume expansion. The good integration of MoO2 nanoparticles into carbon matrix and the cable core role of TiO2 nanotube clusters enable the rapid electron transfer during discharge/charge process. Benefiting from these structure merits, the as-made TiO2@MoO2-C can deliver an excellent cycling stability up to 10 000 cycles even at a high current density of 10 A g−1. Additionally, it exhibits superior rate capacities of 110 and 76 mA h g−1 at high current densities of 10 and 20 A g−1, respectively, which is mainly attributed to the high capacitance contribution.
UR - https://onlinelibrary.wiley.com/doi/10.1002/aenm.201602880
UR - http://www.scopus.com/inward/record.url?scp=85018629621&partnerID=8YFLogxK
U2 - 10.1002/aenm.201602880
DO - 10.1002/aenm.201602880
M3 - Article
SN - 1614-6840
VL - 7
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 15
ER -