Facile synthesis of sulfide Bi 13 S 18 I 2 as a promising anode material for a lithium-ion battery.

Authors :: Yang CL
Liang C
Gao C
Guo J
Chen BM
Huang H
Source :: RSC advances [RSC Adv] 2023 Sep 26; Vol. 13 (41), pp. 28389-28394. Date of Electronic Publication: 2023 Sep 26 (Print Publication: 2023).
Publication Year :: 2023
Abstract: A novel Bi <subscript>13</subscript> S <subscript>18</subscript> I <subscript>2</subscript> structure was synthesized using a facile one-pot hydrothermal method and further optimized as an anode material using graphene. The graphene/Bi <subscript>13</subscript> S <subscript>18</subscript> I <subscript>2</subscript> composite achieved a high discharge capacity with an initial value of 1126.5 mA h g <superscript>-1</superscript> and a high and stable discharge capacity of 287.1 mA h g <superscript>-1</superscript> after 500 cycles compared with pure Bi <subscript>13</subscript> S <subscript>18</subscript> I <subscript>2</subscript> , which derives from the inhibited volume expansion and high electrical conductivity obtained from graphene. In situ XRD was performed to analyze the Li storage mechanism in depth. The results support the feasibility of the new ternary sulfide Bi <subscript>13</subscript> S <subscript>18</subscript> I <subscript>2</subscript> as a promising lithium ion battery.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)

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