Robust flexible WS2/PEDOT:PSS film for use in high-performance miniature supercapacitors

Core‐Shell Structure of SnO2@C/PEDOT : PSS Microspheres with Dual Protection Layers for Enhanced Lithium Storage Performance

“…Compared with SnO 2 @C composite, high intensity peaks of S 2p is clearly observed (Figure 1c), which is deconvoluted into 164.1 and 168.1 eV ( Figure S1a), attributing to S 2p 3/2 and 2p 1/2 spinorbit, respectively. [27] High-resolution C1s XPS spectra are also shown in Figure S1b and c. The four peaks of SnO 2 @C/ PEDOT : PSS at 284.6, 285.1, 286.2 and 288.9 eV are attributed to C=C, CÀ S, CÀ O and C=O, respectively. [30][31][32] By comparison with SnO 2 @C, the additional CÀ S in Figure S1b is derived from the thiophene rings, confirming the existence of PEDOT : PSS in the composite.…”

“…Moreover, XPS is also performed to characterize the surface chemical state for SnO 2 @C and SnO 2 @C/PEDOT : PSS composites. Compared with SnO 2 @C composite, high intensity peaks of S 2p is clearly observed (Figure c), which is deconvoluted into 164.1 and 168.1 eV (Figure S1a), attributing to S 2p 3/2 and 2p 1/2 spin‐orbit, respectively . High‐resolution C1s XPS spectra are also shown in Figure S1b and c. The four peaks of SnO 2 @C/PEDOT : PSS at 284.6, 285.1, 286.2 and 288.9 eV are attributed to C=C, C−S, C−O and C=O, respectively .…”

“…PEDOT : PSS, as a highly conductive polymer, has a superior ability with film forming, which is often used as the additive to improve electrode performance. [24][25][26][27] For instance, the ZnO/C coated with PEDOT : PSS nanorods, exhibited the specific capacity of 748.1 mAh g À 1 , [28] while the Mn 2 O 3 /PEDOT : PSS composite displayed 1450 mAh g À 1 with 200 cycles. [29] It is confirmed that confining nanoparticles into PEDOT : PSS carbon matrix is an efficient strategy to enhance whole electrode conductivity, ensuring the intimate contact between active materials with carbon layers and alleviating the capacity decay induced by severe pulverization after extensive lithiation/ delithiation.…”

“…PEDOT : PSS, as a highly conductive polymer, has a superior ability with film forming, which is often used as the additive to improve electrode performance . For instance, the ZnO/C coated with PEDOT : PSS nanorods, exhibited the specific capacity of 748.1 mAh g −1 , while the Mn 2 O 3 /PEDOT : PSS composite displayed 1450 mAh g −1 with 200 cycles .…”

Performance and future directions of transition metal sulfide‐based electrode materials towards supercapacitor/supercapattery

“…The high areal capacitance and volumetric capacitance of 86 mF cm À2 and a high of 411 F cm À3 at 40 mV s À1 . The performance of WS 2 based films was further evaluated by fabricating a flexible supercapacitor device yielding 87 F cm À3 at 10 mV s À1(Liang et al, 2018).…”