The cross sections of SNs-sns2-s, (SNs-sns2)/FLG and (SNs-Sns2-s)/FLG before and after 500 cycles at 0.2A·g-1 show that the thickness of SnS -- sns2-s and (SnS -- SnS2)/FLG before and after the cycle are about 8.2 mm and 8.5mm. After cycling, it increased to about 24.5 and 17.1mm, and some cracks appeared. After the removal of iron by PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC, (SnS -- SnS2 -- S)/FLG did not show such significant changes before and after the cycle.
(SnS -- SnS2 -- S)/FLG remained intact without cracks. The out-of-situ appearance after different cycles indicates that the grains of SnS phase grow after the removal cycle of these composite PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC. The results showed that the SnS nanoparticles in (SnS -- SnS2 -- S)/FLG were still well dispersed and restricted by the FLG matrix. The Sn, S and C elements mapping of the cyclic (SnS-SnS2-S) /FLG indicated that most of the active nanoparticles were still evenly distributed in the FLG matrix.
These results verify that the LITHIUM/delithium and FLG carriers of PTMS LITHIUM COBALT ACID MATERIAL MAGNETIC with iron removal in nanospace can effectively adapt to the volume change and particle aggregation of SnS, so as to maintain the structural stability of the electrode. The excellent recyclability of (SnS -- SnS2-s)/FLG can be attributed to the combination of nanospace-limited lithium/delithium and FLG support. In the litization process of (SnS -- SnS2 -- S)/FLG, the Li2S phase is first formed from the conversion of S and combined into the composite material.
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