Ultrathin Carbon Nanotubes for Efficient Energy Storage: a First-Principles Study
-
Abstract
On the basis of first-principles density functional calculations, the present study sheds theoretical insight on ultrathin carbon nanotube (UCNT) and hydrogenated ultrathin carbon nanotube (HUCNT) for use as potential materials not only for Li-ion battery anode but also for high-capacity hydrogen storage. The highest Li storage capacities in UCNT and HUCNT can be of LiC4 and LiC4H2, respectively, which are higher than that in graphite and LiC6. Binding between Li (Ca) atoms and these materials are found to be enhanced considerably. Each Li (Ca) atom may bind multi-hydrogen molecules, and the adsorption energies are ideally suited for storing hydrogen under ambient conditions, and the predicted weight percentage of molecular hydrogen are in the range of 6.4–12 wt% exceeding the target set by the United States Department of Energy. -
References
-
Related Articles
[1] TAO Ru-Mao, SI Lei, MA Yan-Xing, ZOU Yong-Chao, ZHOU Pu. Tolerance on Tilt Error for the Incoherent Combination of Fiber Lasers in a Real Environment [J]. Chin. Phys. Lett., 2011, 28(7): 074219. doi: 10.1088/0256-307X/28/7/074219 [2] MA Shan-Jun, XU Xue-Xiang. A New Approach for Constructing New Coherent-Entangled State Representations [J]. Chin. Phys. Lett., 2010, 27(9): 090304. doi: 10.1088/0256-307X/27/9/090304 [3] GUO Yu, DENG Hong-Liang. Preparation of Cluster States of Atomic Qubits in Cavity QED [J]. Chin. Phys. Lett., 2010, 27(4): 040309. doi: 10.1088/0256-307X/27/4/040309 [4] SONG Ke-Hui. Scheme for Generating Cluster States with Charge Qubits in a Cavity [J]. Chin. Phys. Lett., 2009, 26(12): 120302. doi: 10.1088/0256-307X/26/12/120302 [5] DU Gang, LAI Bo-Hui, YU Ya-Fei, ZHANG Zhi-Ming. Schemes for Generating Cluster States via Cavity Systems [J]. Chin. Phys. Lett., 2009, 26(10): 104201. doi: 10.1088/0256-307X/26/10/104201 [6] DIAO Da-Sheng, ZHANG Yong-Sheng, ZHOU Xiang-Fa, GUO Guang-Can. Efficient Construction of High-Dimensional Cluster State [J]. Chin. Phys. Lett., 2008, 25(10): 3555-3557. [7] ZHOU Yan-Li, YANG Li-Jia, DAI Hong-Yi. Generation of Cluster States in Cavity QED [J]. Chin. Phys. Lett., 2007, 24(12): 3304-3307. [8] WU Huai-Zhi, YANG Zhen-Biao, ZHENG Shi-Biao. Effective Scheme for Generating Cluster States in Cavity QED [J]. Chin. Phys. Lett., 2007, 24(11): 3055-3058. [9] YANG Wen-Xing. Preparation of Cluster States with Trapped Ions in Thermal Motion [J]. Chin. Phys. Lett., 2007, 24(1): 104-107. [10] YANG Wen-Xing, ZHAN Zhi-Ming, LI Jia-Hua. Cluster States from Quantum Logic Gates with Trapped Ions in Thermal Motion [J]. Chin. Phys. Lett., 2006, 23(1): 120-123.