Malik, Yoga Trianzar Shin, Seo-Yeon Jang, Jin Il Kim, Hyung Min Cho, Sangho Do, Young Rag Jeon, Ju-Won 2024-01-19T10:03:04Z 2024-01-19T10:03:04Z 2023-01-03 2023-03 1613-6810 https://pubs.kist.re.kr/handle/201004/113986 Despite of extremely high theoretical capacity of Si (3579 mAh g(-1)), Si anodes suffer from pulverization and delamination of the electrodes induced by large volume change during charge/discharge cycles. To address those issues, herein, self-healable and highly stretchable multifunctional binders, polydioxythiophene:polyacrylic acid:phytic acid (PEDOT:PAA: PA, PDPP) that provide Si anodes with self-healability and excellent structural integrity is designed. By utilizing the self-healing binder, Si anodes self-repair cracks and damages of Si anodes generated during cycling. For the first time, it is demonstrated that Si anodes autonomously self-heal artificially created cracks in electrolytes under practical battery operating conditions. Consequently, this self-healable Si anode can still deliver a reversible capacity of 2312 mAh g(-1) after 100 cycles with remarkable initial Coulombic efficiency of 94%, which is superior to other reported Si anodes. Moreover, the self-healing binder possesses enhanced Li-ion diffusivity with additional electronic conductivity, providing excellent rate capability with a capacity of 2084 mAh g(-1) at a very high C-rate of 5 C. English Wiley - V C H Verlag GmbbH & Co. Self-Repairable Silicon Anodes Using a Multifunctional Binder for High-Performance Lithium-Ion Batteries Article 10.1002/smll.202206141 1 Small, v.19, no.9 Small 19 9 N scie scopus 000899259600001 2-s2.0-85144402055 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Early Access RECENT PROGRESS NANO GEL lithium-ion batteries rate capability self-healable silicon anodes