TY - JOUR
T1 - Binder-free ZnO@ZnSnO3 quantum dots core-shell nanorod array anodes for lithium-ion batteries
AU - Tan, Hsiang
AU - Cho, Hsun Wei
AU - Wu, Jih Jen
N1 - Funding Information:
This research is supported by the Ministry of Science and Technology in Taiwan under Contracts MOST 105−2221-E-006−251-MY3 , MOST 106−2221-E-006−202-MY3, and MOST 107-3113-E-006-006 . We thank Professor Ping-Lin Kuo for technique support.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/6/1
Y1 - 2018/6/1
N2 - In this work, ZnSnO3 quantum dots (QDs), instead of commonly used conductive carbon, are grown on the ZnO nanorod (NR) array to construct the binder-free ZnO@ZnSnO3 QDs core-shell NR array electrode on carbon cloth for lithium-ion battery. The ZnO@ZnSnO3 QDs core-shell NR array electrode exhibits excellent lithium storage performance with an improved cycling performance and superior rate capability compared to the ZnO NR array electrode. At a current density of 200 mAg−1, 15.8% capacity loss is acquired in the ZnO@ZnSnO3 QDs core-shell NR array electrode after 110 cycles with capacity retention of 1073 mAhg−1. Significant increases in reversible capacities from 340 to 545 mAhg−1 and from 95 to 390 mAhg−1 at current densities of 1000 and 2000 mAg−1, respectively, are achieved as the ZnO NR arrays are coated with the ZnSnO3 QD shells. The remarkably improved electrochemical performances result from that the configuration of binder-free ZnO@ZnSnO3 QDs core-shell NR array electrode not only facilitates the charge transfer through the solid electrolyte interface and the electronic/ionic conduction boundary as well as lithium ion diffusion but also effectively accommodates the volume change during repeated charge/discharge processes.
AB - In this work, ZnSnO3 quantum dots (QDs), instead of commonly used conductive carbon, are grown on the ZnO nanorod (NR) array to construct the binder-free ZnO@ZnSnO3 QDs core-shell NR array electrode on carbon cloth for lithium-ion battery. The ZnO@ZnSnO3 QDs core-shell NR array electrode exhibits excellent lithium storage performance with an improved cycling performance and superior rate capability compared to the ZnO NR array electrode. At a current density of 200 mAg−1, 15.8% capacity loss is acquired in the ZnO@ZnSnO3 QDs core-shell NR array electrode after 110 cycles with capacity retention of 1073 mAhg−1. Significant increases in reversible capacities from 340 to 545 mAhg−1 and from 95 to 390 mAhg−1 at current densities of 1000 and 2000 mAg−1, respectively, are achieved as the ZnO NR arrays are coated with the ZnSnO3 QD shells. The remarkably improved electrochemical performances result from that the configuration of binder-free ZnO@ZnSnO3 QDs core-shell NR array electrode not only facilitates the charge transfer through the solid electrolyte interface and the electronic/ionic conduction boundary as well as lithium ion diffusion but also effectively accommodates the volume change during repeated charge/discharge processes.
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U2 - 10.1016/j.jpowsour.2018.03.066
DO - 10.1016/j.jpowsour.2018.03.066
M3 - Article
AN - SCOPUS:85052570725
VL - 388
SP - 11
EP - 18
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -