2018
DOI: 10.1002/adma.201706317
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In Situ Encapsulating α‐MnS into N,S‐Codoped Nanotube‐Like Carbon as Advanced Anode Material: α → β Phase Transition Promoted Cycling Stability and Superior Li/Na‐Storage Performance in Half/Full Cells

Abstract: Incorporation of N,S-codoped nanotube-like carbon (N,S-NTC) can endow electrode materials with superior electrochemical properties owing to the unique nanoarchitecture and improved kinetics. Herein, α-MnS nanoparticles (NPs) are in situ encapsulated into N,S-NTC, preparing an advanced anode material (α-MnS@N,S-NTC) for lithium-ion/sodium-ion batteries (LIBs/SIBs). It is for the first time revealed that electrochemical α → β phase transition of MnS NPs during the 1st cycle effectively promotes Li-storage proper… Show more

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Cited by 171 publications
(96 citation statements)
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“…The high S a , porous and N-doped carbon features can offer a lot of active sites and ion transport pathways, which is conducive to Li + /Na + mobility and transport kinetics. [31][32][33] The components of NiO@CÀ N NSs were determined by thermogravimetric analysis in air from RT to 1000°C at 10°C min À 1 ( Figure S2). The weight loss curve suggests a continuous decrease of 8.6 % at~200°C, which can be mainly attributed to removal of adsorbed moisture.…”
Section: Resultsmentioning
confidence: 99%
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“…The high S a , porous and N-doped carbon features can offer a lot of active sites and ion transport pathways, which is conducive to Li + /Na + mobility and transport kinetics. [31][32][33] The components of NiO@CÀ N NSs were determined by thermogravimetric analysis in air from RT to 1000°C at 10°C min À 1 ( Figure S2). The weight loss curve suggests a continuous decrease of 8.6 % at~200°C, which can be mainly attributed to removal of adsorbed moisture.…”
Section: Resultsmentioning
confidence: 99%
“…The EIS spectra consists of two partly conterminal semicircles at between high/ medium frequencies and a straight sloping line at lowfrequency regions. [9,31] Sometimes, the low-frequency limit used for measurement may be too high to allow Li + to diffuse in the solid, so there may be a lack of sloped straight lines at low frequencies (Figure 4f). [43] Taking the EIS data at RT as an example (Figure 4a), R e of the battery reflects the combined of among separator, electrolyte and electrodes.…”
Section: Resultsmentioning
confidence: 99%
“…[33][34][35] i ¼ av b ð2Þ Where i and v represent the currenta nd sweep rate, respectively,a nd a and b refer to constants. Consequently,t he b value of Fe 2 O 3 /GR can be quantified from the plots of log i versus log v for peaks 1a nd 2( 0.96 and 0.93, Figure 4b), [36,37] giving av alue approaching1 .0, [38,39] suggesting the kinetics of lithiation/delithiation are dominated by capacitive behavior. [40,41] The corresponding ratios of contribution can be quantified according to the Equations (4) and (5).…”
Section: Resultsmentioning
confidence: 99%
“…When evaluated as negative electrode material for SIBs, the NiS 2 nanospheres deliver a capacity of 319 mAh g −1 at 0.5 A g −1 for the 1000th cycle and a reversible capacity of 253 mAh g −1 at 5 A g −1 . Recently, Liu et al synthesized α‐MnS@N,S–NTC composite and tested its sodium storage performance. The as‐prepared α‐MnS@N,S–NTC composite shows the 1D nanostructure with the length of 0.5–1 µm and diameter of 100 nm.…”
Section: Conversion‐type Anode Materials For Sodium‐ion Batteriesmentioning
confidence: 99%