Polyphenylene Tetrasulfide as an Inherently Flexible Cathode Material for Rechargeable Lithium Batteries
| Autor: | Yongzhu Fu, Yi Cui, Michaela Elaine Bell, Amruth Bhargav |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
010405 organic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology 01 natural sciences Sulfur Lithium battery Cathode 0104 chemical sciences law.invention chemistry Chemical engineering law Cathode material Materials Chemistry Electrochemistry Chemical Engineering (miscellaneous) Lithium Electronics Electrical and Electronic Engineering 0210 nano-technology Faraday efficiency |
| Zdroj: | ACS Applied Energy Materials. 1:5859-5864 |
| ISSN: | 2574-0962 |
| DOI: | 10.1021/acsaem.8b01350 |
| Popis: | Li-ion batteries have transformed personal electronics from chunky devices to lightweight, flexible, and even wearable ones. Higher capacity and energy density, along with flexibility is offered by sulfur-based cathode materials. In this work, the condensation reaction of 1,4-benzenedithiol with elemental sulfur has been utilized to synthesize polyphenylene tetrasulfide (PPTS) possessing a theoretical specific capacity of 788 mAh g–1. This elastic material can accommodate a strain of up to 334%, while the carbon nanotube-based cathode can handle strains of 107%. This good flexibility also comes with favorable cycling performance in a lithium battery with a high capacity (633 mAh g–1 at 1 C), good rate performance, high Coulombic efficiency (∼99.4%), and a low capacity decay (under 0.07% per cycle). Therefore, PPTS and its analogues offer promising cathodes for flexible lithium batteries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|