SWNT Networks with Polythiophene Carboxylate Links for High-Performance Silicon Monoxide Electrodes
| Autor: | Kenneth J. Takeuchi, Amy C. Marschilok, Krysten Minnici, Esther S. Takeuchi, Elsa Reichmanis, Sujin R. Lee, Guoyan Zhang, Yo-Han Kwon |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Energy Engineering and Power Technology 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Silicon monoxide 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical bond Chemical engineering law Electrode Materials Chemistry Thiophene Chemical Engineering (miscellaneous) Polythiophene Carboxylate Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | ACS Applied Energy Materials. 1:2417-2423 |
| ISSN: | 2574-0962 |
| DOI: | 10.1021/acsaem.8b00522 |
| Popis: | Carboxylated polythiophenes, such as poly[3-(potassium-4-butanoate) thiophene] (PPBT), play a critical role in securely connecting single-walled carbon nanotube (SWNT) electrical networks onto the surface of carbon-coated silicon monoxide (c-SiOx). These connections are a function of the materials’ surface chemistries and resultant physical/chemical bonding through favorable molecular interactions. Specifically, the PPBT π-conjugated backbone and alkyl side chain carboxylate moieties (COO−), respectively, physically interact with the SWNT and c-SiOx carbon layer π-electron-rich surfaces, and chemically bind to surface hydroxyl (−OH) species of the c-SiOx electroactive materials to form a carboxylate bond. This approach effectively captured pulverized particles that form during battery operation and beneficially suppressed the thickness change that electrodes typically undergo. The resultant electrodes exhibited superior electrochemical performance, which was ascribed to stable SEI layer formation, reduced... |
| Databáze: | OpenAIRE |
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