Journal Article10.1021/ACSAMI.8B19575
Oxygen Vacancies Boost δ-Bi2O3 as a High-Performance Electrode for Rechargeable Aqueous Batteries.
Tingting Qin,Xiaoyu Zhang,Dong F. Wang,Ting Deng,Haoxiang Wang,Xiaofei Liu,Xiaoyuan Shi,Zhengming Li,Hong Chen,Xiang-Min Meng,Wei Zhang,Wei Zhang,Weitao Zheng +12 more
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TL;DR: It is demonstrated that oxygen vacancies in δ-Bi2O3 can not only promote electrical conductivity but also serve as central entrepots collecting OH- groups via electrostatic force effect, which has boosted the oxidation reaction and enhanced the electrochemical properties.
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Abstract: Metal oxides as electrode materials are of great potential for rechargeable aqueous batteries. However, they suffer from inferior cycle stability and rate capability because of poor electronic and ionic conductivities. Herein, taking vertically orientated Bi2O3 nanoflakes on Ti substrates as examples, we find that the δ-Bi2O3 electrode with plenty of positively charged oxygen defects show remarkably higher specific capacity (264 mA h g–1) and far superior rate capability than that of α-Bi2O3 with less oxygen vacancies. Through pinpointing the existence form and the role of oxygen vacancies within the electrochemical processes, we demonstrate that oxygen vacancies in δ-Bi2O3 can not only promote electrical conductivity but also serve as central entrepots collecting OH– groups via electrostatic force effect, which has boosted the oxidation reaction and enhanced the electrochemical properties. Our work merits an excellent Bi2O3 negative electrode material via giving full play to the role of oxygen vacancies ...
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References
Microstructural interpretation of vibrational properties and ionic transport mechanism in Dy stabilized δ-Bi2O3
S. Bandyopadhyay,Abhigyan Dutta +1 more
TL;DR: In this paper, the correlation of structure and microstructure with vibrational property and ionic conduction mechanism of Bi1-xDyxO1.5-δ for different doping concentration has been investigated.
27
Realization of nanostructured N-doped p-type Bi2O3 thin films
TL;DR: In this paper, N-doped p-type porous Bi2O3 nanoplates thin films (NPTFs) were firstly synthesized on FTO substrates through chemical bath deposition (CBD) followed by a thermal treatment process under a NH3 ambient.
20
Creating fast ion conducting composites via in-situ introduction of titanium as oxygen getter
TL;DR: In this article, the authors demonstrate that ball milling in air with a small amount of Ti additive can be a cost-effective approach for preparing high-performance alloy anodes, forming TiO 2 ( −1 ) of SnSb/carbon-nanotube anode (over 204% better than without Ti additive).
18
Ionic transport properties in doped δ-Bi2O3
Guo-Hua Zhong,J L Wang,Zhenhua Zeng +2 more
- 01 Jan 2006
TL;DR: In this article, the first principles calculations on doped δ-Bi2O3 were performed to investigate ionic conductivity, and the crystal structure and the conductivity were discussed in total energy and density of states (DOS) from the calculations.
18
Chemically stabilized δ-Bi2O3 phase: Raman scattering and X-ray diffraction studies
TL;DR: In this article, the Rietveld refinement of X Ray diffraction pattern was used to show that the composition x = 0.2 crystallizes in the cubic symmetry, space group Fm 3m (ITA No. 225) with a lattice parameter a = 5.49 A.