TY - JOUR
T1 - CdSe/ZnS QD@CNT nanocomposite photocathode for improvement on charge overpotential in photoelectrochemical Li-O2 batteries
AU - Veeramani, Vediyappan
AU - Chen, Yu Hsiang
AU - Wang, Hung Chia
AU - Hung, Tai Feng
AU - Chang, Wen Sheng
AU - Wei, Da Hua
AU - Hu, Shu Fen
AU - Liu, Ru Shi
N1 - Funding Information:
We gratefully appreciate the financial support from the Bureau of Energy ( BOE ) – Taiwan, Ministry of Economy Affairs ( MOEA ), Taiwan (105-D0114).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/10/1
Y1 - 2018/10/1
N2 - Li-ion batteries play a significant role in portable electronic devices in the running world. However, the limited energy density still needs to be improved for the growing future. Hence, we developed a photocathode nanocomposite material composed of Cadmium Selenide/Zinc Sulfide Quantum Dots with Carbon nanotube (CdSe/ZnS QD@CNT) for an efficient and tunable performance of the photoelectrochemical Li–O2 battery system to overcome the key issue of overpotential. The QD and CNT networks can provide efficient transportation paths of the electron–hole pairs and the O2 gas and lithium ions, respectively. The charging voltage of the photoelectrode is 2.65–4.0 V; therefore, decreased overpotential was due to efficient oxidation of Li2O2 by photoexcited electron–hole pairs by using QDs, resulting in a long-term operational stability over 100 cycles. On the basis of the advantages, the QDs exhibit efficient potential in Li–O2 batteries.
AB - Li-ion batteries play a significant role in portable electronic devices in the running world. However, the limited energy density still needs to be improved for the growing future. Hence, we developed a photocathode nanocomposite material composed of Cadmium Selenide/Zinc Sulfide Quantum Dots with Carbon nanotube (CdSe/ZnS QD@CNT) for an efficient and tunable performance of the photoelectrochemical Li–O2 battery system to overcome the key issue of overpotential. The QD and CNT networks can provide efficient transportation paths of the electron–hole pairs and the O2 gas and lithium ions, respectively. The charging voltage of the photoelectrode is 2.65–4.0 V; therefore, decreased overpotential was due to efficient oxidation of Li2O2 by photoexcited electron–hole pairs by using QDs, resulting in a long-term operational stability over 100 cycles. On the basis of the advantages, the QDs exhibit efficient potential in Li–O2 batteries.
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U2 - 10.1016/j.cej.2018.05.012
DO - 10.1016/j.cej.2018.05.012
M3 - Article
AN - SCOPUS:85047193080
SN - 1385-8947
VL - 349
SP - 235
EP - 240
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -