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- W2072912287 abstract "Abstract A facile process is demonstrated for the synthesis of layered SiCN-MoS 2 structure via pyrolysis of polysilazane functionalized MoS 2 flakes. The layered morphology and polymer to ceramic transformation on MoS 2 surfaces was confirmed by use of electron microscopy and spectroscopic techniques. Tested as thick film electrode in a Li-ion battery half-cell, SiCN-MoS 2 showed the classical three-stage reaction with improved cycling stability and capacity retention than neat MoS 2 . Contribution of conversion reaction of Li/MoS 2 system on overall capacity was marginally affected by the presence of SiCN while Li-irreversibility arising from electrolyte decomposition was greatly suppressed. This is understood as one of the reasons for decreased first cycle loss and increased capacity retention. SiCN-MoS 2 in the form of self-supporting paper electrode (at 6 mg·cm −2 ) exhibited even better performance, regaining initial charge capacity of approximately 530 mAh·g −1 when the current density returned to 100 mA·g −1 after continuous cycling at 2400 mA·g −1 (192 mAh·g −1 ). MoS 2 cycled electrode showed mud-cracks and film delamination whereas SiCN-MoS 2 electrodes were intact and covered with a uniform solid electrolyte interphase coating. Taken together, our results suggest that molecular level interfacing with precursor–derived SiCN is an effective strategy for suppressing the metal-sulfide/electrolyte degradation reaction at low discharge potentials." @default.
- W2072912287 created "2016-06-24" @default.
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- W2072912287 date "2015-04-08" @default.
- W2072912287 modified "2023-10-10" @default.
- W2072912287 title "Polymer-Derived Ceramic Functionalized MoS2 Composite Paper as a Stable Lithium-Ion Battery Electrode" @default.
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- W2072912287 doi "https://doi.org/10.1038/srep09792" @default.
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