Lithium storage performance of FeS@graphene anode materials prepared in a deep eutectic solvent

A facile precursor route towards the synthesis of Fe1−xS@NC-rGO composite anode materials for high-performance lithium-ion batteries

“…Besides, compared with previously reported iron sulfide-based materials, the electrochemical performance of the Fe 1− x S@NC-rGO-2 composite is still remarkable, as shown in Fig. 5 and Table S2 † 10,13–15,19,21–23,34–51 . Besides, the morphology of the Fe 1− x S@NC-rGO-2 electrode after 1700 cycles at 1 A g −1 has also been investigated using scanning electron microscopy.…”

“…5 and Table S2. † 10,[13][14][15]19,[21][22][23][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] Besides, the morphology of the Fe 1−x S@NC-rGO-2 electrode after 1700 cycles at 1 A g −1 has also been investigated using scanning electron microscopy. As shown in Fig.…”

Rodlike FeS/SnS@N-C Core–Shell Microparticles for Lithium-Ion Batteries

“…Significantly, according to the theory of Bruce Dunn, the equation below is satisfied between i and v , i = a v b log ( i ) = log ( a ) + b 0.25em log ( v ) where parameter a and parameter b are variables. Furthermore, the Li + storage mechanism is determined by ion diffusion if b ≈ 0.5, while it is dominated by pseudocapacitance for b ≈ 1 . On the basis of the linear fitting between log( i ) and log( v ), shown in Figure b, b is 0.7979 at anode peaks and b is 0.9766 at cathode peaks, indicating that the reaction mechanism in the Li + storage process is mainly controlled by the contribution of pseudocapacitance.…”

“…Significantly, according to the theory of Bruce Dunn, the equation below is satisfied between i and v , where parameter a and parameter b are variables. Furthermore, the Li + storage mechanism is determined by ion diffusion if b ≈ 0.5, while it is dominated by pseudocapacitance for b ≈ 1 . On the basis of the linear fitting between log­( i ) and log­( v ), shown in Figure b, b is 0.7979 at anode peaks and b is 0.9766 at cathode peaks, indicating that the reaction mechanism in the Li + storage process is mainly controlled by the contribution of pseudocapacitance.…”

Breaking new grounds: metal salts based-deep eutectic solvents and their applications- a comprehensive review

“…Ju and his coworkers 145 reported FeS–graphene composites that were fabricated through a single-step pyrolytic sulfidation process utilizing DES by combining FeCl 3 ·6H 2 O as an iron source, and PEG as a carbon source. Amid the synthesized composite electrode materials, the FeS/G-550 electrode showed excellent electrochemical features with higher specific capacitance, outstanding rate capability, and efficient cyclic stability.…”