Journal
ELECTROCHIMICA ACTA
Volume 434, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.141306
Keywords
Triazine; Dendrimer; Carbon nanotube; Anode; Li-ion battery
Categories
Funding
- Ministry of Science and Technology in Taiwan
- Innovative Materials and Analysis Technol- ogy Exploration in Academia Sinica
- [MOST 108-2113-M-001-023-MY3]
- [MOST 110- 2124-M-001-001]
- [AS-iMATE-110-23]
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This study describes the electrochemical performance of a triazine-based dendrimer as a lithium-ion battery anode, and demonstrates that the addition of a small amount of carbon nanotube paper significantly enhances its energy-storing capabilities. The results showed that the specific capacity of the composite anode increased to 656 mA h g(-1) after adding 1% carbon nanotube.
Owing to their highly tunable molecular structure and chemical stability, dendrimers consisting of triazine and piperazine moieties have been investigated. The present work describes the electrochemical performance of a columnar liquid-crystalline triazine-based dendrimer containing the linker with diaminopropane (DAP) as a lithium-ion battery anode. To elucidate the impact of conductive carbon filler in the electrode, a tiny amount of carbon nanotube (CNT) paper has been incorporated in the DAP anode. The battery performance revealed that the DAP anode has shown a high specific capacity of up to 444 mA h g(-1) at 0.5 A g(-1) after 200 cycles. Surprisingly, with an additional 1% CNT, the Li+ storage capacity of the dendrimer-based composite anode (DAP/ CNT1%) significantly enhanced up to 656 mA h g(-1). To the best of our knowledge, this is the first time that a triazine-based dendrimer has been utilized as an anode material in conjunction with a small amount of CNT to further boost its energy-storing capabilities through a synergy of capacitive storage mechanisms and improve Li+ transport. The efficient lithium storage of DAP/CNT composite further shows its amenability as organic electrode material for next-generation organic Li-ion batteries.
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