Chenyun Wei - Academia.edu (original) (raw)
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Papers by Chenyun Wei
Energy Storage Materials, 2017
MnO quantum dots homogenously embedded in carbon nanotubes (denoted as MnO QDs@CNTs) were prepare... more MnO quantum dots homogenously embedded in carbon nanotubes (denoted as MnO QDs@CNTs) were prepared via a scalable electrospinning technique with LiN 3 serving as poregen agent. The strong N 2 evolution resulting from the explosive decomposition of the porogen LiN 3 and oxidation diffusion of MnCl 2 during the heat treatment are found to be responsible for the formation of the hierarchy structure. As binder-free anodes, the composite networks displayed extraordinary LIBs performance with good reversible capacity (as high as ∼1100 mAh g-1 at 100 mA g-1), high coulombic efficiency, outstanding rate capability and superior cyclic performance (nearly no capacity fading after 200 cycles at a high current density of 3000 mA g-1), owing to the unique combination of ultra-small MnO QDs and stable CNTs with excellent transport properties. This shows MnO QDs@CNTs composites are almost the most efficient MnO-based anode materials for LIBs so far.
Energy Storage Materials, 2017
MnO quantum dots homogenously embedded in carbon nanotubes (denoted as MnO QDs@CNTs) were prepare... more MnO quantum dots homogenously embedded in carbon nanotubes (denoted as MnO QDs@CNTs) were prepared via a scalable electrospinning technique with LiN 3 serving as poregen agent. The strong N 2 evolution resulting from the explosive decomposition of the porogen LiN 3 and oxidation diffusion of MnCl 2 during the heat treatment are found to be responsible for the formation of the hierarchy structure. As binder-free anodes, the composite networks displayed extraordinary LIBs performance with good reversible capacity (as high as ∼1100 mAh g-1 at 100 mA g-1), high coulombic efficiency, outstanding rate capability and superior cyclic performance (nearly no capacity fading after 200 cycles at a high current density of 3000 mA g-1), owing to the unique combination of ultra-small MnO QDs and stable CNTs with excellent transport properties. This shows MnO QDs@CNTs composites are almost the most efficient MnO-based anode materials for LIBs so far.