3D urchin-like architectures assembled by MnS nanorods encapsulated in N-doped carbon tubes for superior lithium storage capability

Wang, Ruirui; Li, Baosheng; Lai, Linfei; Hou, Mingzhen; Gao, Jingchang; Wu, Renbing

doi:10.1016/j.cej.2018.08.136

Cited by 77 publications

(41 citation statements)

References 58 publications

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“…06-0518) withouta ny detectable impurities, implying its good crystallization and the high purity of the crystalline phase. [10] Additionally,aclear peak centered at 26.58 is found in the final sample, which is attributed to FG ( Figure S1). The graphitic nature of the FG and N-C in the a-MnS@N-C/FG composite was subsequently analyzed by Raman spectroscopy.A ss hown in FigureS4( SupportingI nformation), the peaks at 1579 and 1331 cm À1 are assigned to the G-and D-bands associated with graphitic characteristics and defects in carbon-based materials, respectively.…”

Section: Resultsmentioning

confidence: 98%

“…As shown in Figure S7 (Supporting Information), the impedance spectraa re composed of ad epressed semicircle representingt he charge-transfer resistance (R ct )a nd as lope line correlated with Warburg resistance (Z w ) corresponding to Li + diffusion inside the electrodes. [10,18] The value of R ct increases after the first few cycles and then decreasesi ns ubsequentc ycles.T he initial slight increase for R ct is caused mainly by the formation of the SEI, whichm ay slow down the ionic diffusions somewhat. However,b enefitingf rom its unique stable nanofoam structure and improved kinetics, the R ct soon stabilizes at al ower value, which favors the excellent rate performance of a-MnS@N-C/FG.…”

Section: Resultsmentioning

confidence: 99%

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Construction of Rich Conductive Pathways from Bottom to Top: A Highly Efficient Charge‐Transfer System Used in Durable Li/Na‐Ion Batteries at −20 °C

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Zhang

et al. 2020

Chemistry A European J

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Construction of Rich Conductive Pathways from Bottom to Top: A Highly Efficient Charge‐Transfer System Used in Durable Li/Na‐Ion Batteries at −20 °C

Xue

Zhang

et al. 2020

Chemistry A European J

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“…The detailed discussion is presented in S2. [4,9,11,12,23,24] .Therefore, TMSs/Ni/C-NFs film is successfully fabricated.…”

Section: Characterization Of Tmss/ni/c-nfsmentioning

confidence: 99%

“…Recently, metal sulfides (e.g., MnS [4] , MoS 2 [5] , CoS 2 [6] , Ni 3 S 2 [7] ) have triggered extensive attention as anode materials for LIC as a result of their higher theoretical capacity, lower expenditure and the improved electrode kinetics compared to their corresponding counterparts of metal oxides (MOs). Among all metal sulfides, the manganese, cobalt and nickel sulfides offer incomparable electrochemical performance.…”

Section: Introductionmentioning

confidence: 99%

“…Among all metal sulfides, the manganese, cobalt and nickel sulfides offer incomparable electrochemical performance. MnS, as a low-cost stable sulfide, has many good properties, e.g., environmental friendly, costeffectiveness and high theoretical specific capacity (616 mAh g −1 ) [4] . Meanwhile, cobalt sulfides with various stoichiometric ratios, such as, CoS, Co 1 −x S, Co 4 S 3 , CoS 2 , have been applied widely as significant pseudocapacitor materials due to their excellent redox reversibility and cost effectiveness [8] .…”

Section: Introductionmentioning

confidence: 99%

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Free-standing ternary metallic sulphides/Ni/C-nanofiber anodes for high-performance lithium-ion capacitors

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Zheng

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Superior Lithium Storage Capacity of α‐MnS Nanoparticles Embedded in S‐Doped Carbonaceous Mesoporous Frameworks

Kim

et al. 2019

Advanced Energy Materials

124

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stability, power density, and safety. [1,3,4] Among the alternative electrode materials, transition metal sulfides (TMSs) are quite appealing due to their improved safety and high theoretical capacity (e.g., CuS: 560 mAh g −1 ; CoS 2 : 870 mAh g −1 ; and FeS 2 : 894 mAh g −1 , as calculated for the full conversion reaction). [4] Important, compared to other conversion materials, e.g., oxides, TMSs usually show improved electronic conductivity as well as faster reaction kinetics due to the weaker metal-sulfur bond (compared to the metal-oxygen bond), making the conversion reaction easier. [4] In addition, the voltage hysteresis of sulfides (≈0.7 V) is distinctly lower than that of oxides (≈0.9 V), thus promising better energy efficiencies. [5] Manganese sulfide (α-MnS) is particularly appealing as anode material for LIBs, as it possesses a large theoretical capacity (616 mAh g −1 ) and a lower redox potential compared to other TMSs, such as copper, cobalt, and iron sulfides-besides being highly abundant, ecofriendly, and less expensive. [3,6,7] Despite these advantages, the application of α-MnS as anode material in LIBs has been hampered due to common problems of TMSs such as: (i) serious volume variation during repeated (dis)charge processes leading to poor cycling stability, and (ii) low rate capability arising from low electronic conductivity and Li-ion mobility. [3,7] In order to improve the lithium-ion storage performance of TMSs, many approaches have been proposed. One of the most efficient strategies, so far, is to fabricate nano/microstructured composite materials, Herein, a Mn-based metal-organic framework is used as a precursor to obtain well-defined α-MnS/S-doped C microrod composites. Ultrasmall α-MnS nanoparticles (3-5 nm) uniformly embedded in S-doped carbonaceous mesoporous frameworks (α-MnS/SCMFs) are obtained in a simple sulfidation reaction. As-obtained α-MnS/SCMFsshows outstanding lithium storage performance, with a specific capacity of 1383 mAh g −1 in the 300th cycle or 1500 mAh g −1 in the 120th cycle (at 200 mA g −1 ) using copper or nickel foil as the current collector, respectively. The significant (pseudo)capacitive contribution and the stable composite structure of the electrodes result in impressive rate capabilities and outstanding long-term cycling stability. Importantly, in situ X-ray diffraction measurements studies on electrodes employing various metal foils/disks as current collector reveal the occurrence of the conversion reaction of CuS at (de)lithiation process when using copper foil as the current collector. This constitutes the first report of the reaction mechanism for α-MnS, eventually forming metallic Mn and Li 2 S. In situ dilatometry measurements demonstrate that the peculiar structure of α-MnS/SCMFs effectively restrains the electrode volume variation upon repeated (dis)charge processes. Finally, α-MnS/SCMFs electrodes present an impressive performance when coupled in a full cell with commercial LiMn 1/3 Co 1/3 Ni 1/3 O 2 cathodes.

show abstract

3D urchin-like architectures assembled by MnS nanorods encapsulated in N-doped carbon tubes for superior lithium storage capability

Cited by 77 publications

References 58 publications

Construction of Rich Conductive Pathways from Bottom to Top: A Highly Efficient Charge‐Transfer System Used in Durable Li/Na‐Ion Batteries at −20 °C

Construction of Rich Conductive Pathways from Bottom to Top: A Highly Efficient Charge‐Transfer System Used in Durable Li/Na‐Ion Batteries at −20 °C

Free-standing ternary metallic sulphides/Ni/C-nanofiber anodes for high-performance lithium-ion capacitors

Superior Lithium Storage Capacity of α‐MnS Nanoparticles Embedded in S‐Doped Carbonaceous Mesoporous Frameworks

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