Journal
NEW JOURNAL OF CHEMISTRY
Volume 45, Issue 46, Pages 21534-21537Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nj04461c
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Funding
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- Shanghai Science and Technology Commission [19DZ2271100]
- National Natural Science Foundation of China [21805134]
- Natural Science Foundation of Jiangsu Province, China [BK20191363]
- NJTECH [39837141]
- Science and Technology Innovation Project for Overseas Students from Nanjing City
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A novel redox-active molecule, lithium bis(2,3-dihydroxyphenazine)borate (LDPB), was successfully synthesized using a spiroborate salification strategy from 2,3-dihydroxyphenazine (DHP), showing better cycling stability, rate performance, and capacity retention as a lithium storage material. This strategy could potentially be an efficient approach for constructing novel organic electrode materials.
Redox-active small organic molecules have, due to their ready availability and high capacity, been considered to constitute one of the most promising types of electrode materials. However, their facile dissolution into organic electrolytes deteriorates their cycle performance, thus limiting their applications as electrode materials. In this study, a novel redox-active molecule, lithium bis(2,3-dihydroxyphenazine)borate (LDPB), was synthesized effectively from 2,3-dihydroxyphenazine (DHP) using a spiroborate salification strategy. When used as a lithium storage material, LDPB showed better cycling stability, better rate performance, and higher capacity retention (84.6% after 250 cycles at 200 mA g(-1)) than its DHP precursor. This spiroborate salification strategy could serve as an efficient approach for constructing novel organic electrode materials.
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