We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
All Organic Sodium‐Ion Batteries with Na<sub>4</sub>C<sub>8</sub>H<sub>2</sub>O<sub>6</sub>.
- Authors
Shiwen Wang; Lijiang Wang; Zhiqiang Zhu; Zhe Hu; Qing Zhao; Jun Chen
- Abstract
Developing organic compounds with multifunctional groups to be used as electrode materials for rechargeable sodium‐ion batteries is very important. The organic tetrasodium salt of 2,5‐dihydroxyterephthalic acid (Na4DHTPA; Na4C8H2O6), which was prepared through a green one‐pot method, was investigated at potential windows of 1.6–2.8 V as the positive electrode or 0.1–1.8 V as the negative electrode (vs. Na+/Na), each delivering compatible and stable capacities of ca. 180 mAh g−1 with excellent cycling. A combination of electrochemical, spectroscopic and computational studies revealed that reversible uptake/removal of two Na+ ions is associated with the enolate groups at 1.6–2.8 V (Na2C8H2O6/Na4C8H2O6) and the carboxylate groups at 0.1–1.8 V (Na4C8H2O6/Na6C8H2O6). The use of Na4C8H2O6 as the initial active materials for both electrodes provided the first example of all‐organic rocking‐chair SIBs with an average operation voltage of 1.8 V and a practical energy density of about 65 Wh kg−1.
- Subjects
STORAGE batteries; ORGANIC compounds; NEGATIVE electrode; ENOLATES; SODIUM ions; ENERGY density
- Publication
Angewandte Chemie International Edition, 2014, Vol 53, Issue 23, p5892
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201400032