Ryu, Ho Suk Park, Jin Woo Park, Jinsoo Ahn, Jae-Pyeung Kim, Ki-Won Ahn, Jou-Hyeon Nam, Tae-Hyeon Wang, Guoxiu Ahn, Hyo-Jun 2024-01-20T13:04:54Z 2024-01-20T13:04:54Z 2021-09-01 2013-01 2050-7488 https://pubs.kist.re.kr/handle/201004/128517 To enhance the stability of sulfur cathode for a high energy lithium-sulfur battery, sulfur-activated carbon (S-AC) composite was prepared by encapsulating sulfur into micropores of activated carbon using a solution-based processing technique. In the analysis using the prepared specimen of S-AC composite by the focused ion beam (FIB) technique, the elemental sulfur exists in a highly dispersed state inside the micropores of activated carbon, which has a large surface area and a narrow pore distribution. The S-AC composite was characterized through X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) method, selected area electron diffraction (SAED), energy dispersive X-ray spectrometry (EDX), Fourier transform infrared spectroscopy (FT-IR), thermogravimetry analysis (TGA), and field emission scanning electron microscopy (FESEM). A lithium-sulfur cell using the S-AC composite has a high first discharge capacity over 800 mA h g(-1) S even at a high current density such as 2C (3200 mA g(-1) S) and has good cycleability around 500 mA h g(-1) S discharge capacity at the 50th cycle at the same current density. English ROYAL SOC CHEMISTRY RECHARGEABLE LITHIUM BATTERIES ACTIVATED CARBON COMPOSITE ELECTRODE SULFUR BATTERIES PERFORMANCE ADSORPTION CELLS High capacity cathode materials for Li-S batteries Article 10.1039/c2ta00056c 1 JOURNAL OF MATERIALS CHEMISTRY A, v.1, no.5, pp.1573 - 1578 JOURNAL OF MATERIALS CHEMISTRY A 1 5 1573 1578 scie scopus 000314640100009 2-s2.0-84874975326 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article RECHARGEABLE LITHIUM BATTERIES ACTIVATED CARBON COMPOSITE ELECTRODE SULFUR BATTERIES PERFORMANCE ADSORPTION CELLS New cathode TEM Sulfur cathode