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    Université de Fribourg

    A pyrene–poly(acrylic acid)–polyrotaxane supramolecular binder network for high-performance silicon negative electrodes

    Cho, Yunshik ; Kim, Jaemin ; Elabd, Ahmed ; Choi, Sunghun ; Park, Kiho ; Kwon, Tae‐woo ; Lee, Jungmin ; Char, Kookheon ; Coskun, Ali ; Choi, Jang Wook

    In: Advanced Materials, 2019, p. 1905048

    Although being incorporated in commercial lithium‐ion batteries for a while, the weight portion of silicon monoxide (SiOx, x ≈ 1) is only less than 10 wt% due to the insufficient cycle life. Along this line, polymeric binders that can assist in maintaining the mechanical integrity and interfacial stability of SiOx electrodes are desired to realize higher contents of SiOx. Herein, a...

    Université de Fribourg

    Highly elastic polyrotaxane binders for mechanically stable lithium hosts in lithium‐metal batteries

    Yoo, Dong‐Joo ; Elabd, Ahmed ; Choi, Sunghun ; Cho, Yunshik ; Kim, Jaemin ; Lee, Seung Jong ; Choi, Seung Ho ; Kwon, Tae‐woo ; Char, Kookheon ; Kim, Ki Jae ; Coskun, Ali ; Choi, Jang Wook

    In: Advanced Materials, 2019, vol. 31, no. 29, p. 1901645

    Despite their unparalleled theoretical capacity, lithium‐metal anodes suffer from well‐ known indiscriminate dendrite growth and parasitic surface reactions. Conductive scaffolds with lithium uptake capacity are recently highlighted as promising lithium hosts, and carbon nanotubes (CNTs) are an ideal candidate for this purpose because of their capability of percolating a conductive...