Is superparelectric 2-dimensional Sn2P2S6 having a “higher dielectric constant” desirable for more real Na+ pseudocapacitance?
作者： Sheng Huang , Chao Meng , Min Xiao , Shan Ren , Shuanjin Wang
DOI: 10.1016/J.NANOEN.2019.04.095
关键词:
摘要: Abstract Pseudocapacitive Na+ storage based on the fast absorption/desorption kinetics is a new alternative to realize high rate capability, which rely increasing surface area and creating vacancies. This means low capacity because of dielectric constant for reported pseudocapacitive materials. According capacitance formula, we find path improve capacity. dielectricity (other than engineering) pseudocapacitance can be called more real pseudocapacitance. The superparaelectric 2-dimensional (2D) Sn2P2S6 has much higher bulk counterpart. identical polaron direction triggered superparaelectricity 2D are well verified. And assembly between graphene construct compact network conductivity electron Na+. As results, battery delivers alloy-like long cycle stability.
sci-hub.se 参考文章(46)
K. Chandramani Singh, Chongtham Jiten, Size effect on piezoelectric properties of barium stannate titanate ceramics prepared from nanoparticles Journal of Materials Science: Materials in Electronics. ,vol. 24, pp. 4247- 4252 ,(2013) , 10.1007/S10854-013-1392-Y
Katrin Kneipp, Yang Wang, Harald Kneipp, Lev T. Perelman, Irving Itzkan, Ramachandra R. Dasari, Michael S. Feld, Single Molecule Detection Using Surface-Enhanced Raman Scattering (SERS) Physical Review Letters. ,vol. 78, pp. 1667- 1670 ,(1997) , 10.1103/PHYSREVLETT.78.1667
Chenguang Liu, Zhenning Yu, David Neff, Aruna Zhamu, Bor Z. Jang, Graphene-based supercapacitor with an ultrahigh energy density Nano Letters. ,vol. 10, pp. 4863- 4868 ,(2010) , 10.1021/NL102661Q
Zelang Jian, Bin Zhao, Pan Liu, Fujun Li, Mingbo Zheng, Mingwei Chen, Yi Shi, Haoshen Zhou, Fe2O3 nanocrystals anchored onto graphene nanosheets as the anode material for low-cost sodium-ion batteries Chemical Communications. ,vol. 50, pp. 1215- 1217 ,(2014) , 10.1039/C3CC47977C
Naoaki Yabuuchi, Kei Kubota, Mouad Dahbi, Shinichi Komaba, Research Development on Sodium-Ion Batteries Chemical Reviews. ,vol. 114, pp. 11636- 11682 ,(2014) , 10.1021/CR500192F
Y. P. Wang, L. Zhou, M. F. Zhang, X. Y. Chen, J.-M. Liu, Z. G. Liu, Room-temperature saturated ferroelectric polarization in BiFeO3 ceramics synthesized by rapid liquid phase sintering Applied Physics Letters. ,vol. 84, pp. 1731- 1733 ,(2004) , 10.1063/1.1667612
W. L. Zhong, Y. G. Wang, P. L. Zhang, B. D. Qu, Phenomenological study of the size effect on phase transitions in ferroelectric particles. Physical Review B. ,vol. 50, pp. 698- 703 ,(1994) , 10.1103/PHYSREVB.50.698
Rainer Waser, Oliver Lohse, Electrical characterization of ferroelectric, paraelectric, and superparaelectric thin films Integrated Ferroelectrics. ,vol. 21, pp. 27- 40 ,(1998) , 10.1080/10584589808202048
O. Chobal, I. Rizak, S. Iľkovič, M. Reiffers, V. Šebeň, P. Baláž, M. Timko, V. Rizak, Effect of high-energy ball milling on the phase transition of Sn2P2S6 ferroelectric crystals Solid State Sciences. ,vol. 26, pp. 105- 109 ,(2013) , 10.1016/J.SOLIDSTATESCIENCES.2013.10.003
G. W. Timco, H. H. Schloessin, The effects of high pressure and temperature on the dielectric constant of ferroelectric perovskite ceramic PZT-4 Ferroelectrics. ,vol. 11, pp. 409- 412 ,(1976) , 10.1080/00150197608237771