Sulfur/nickel ferrite composite as cathode with high-volumetric-capacity for lithium-sulfur battery

Zhang, Ze; Wu, Dihua; Zhou, Zhen; Li, Guo‐Ran; Liu, Sheng; Gao, Xueping

doi:10.1007/s40843-018-9292-7

Cited by 89 publications

(55 citation statements)

References 57 publications

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“…[17][18][19][20][21][22][23] This strategy is recently coupled with precise surface modification, endowing electrode substrates or functional separators with lithiophilicity and sulfiphilicity to kinetically promote S/Li 2 S precipitation and regulate LiPS transport. [24][25][26][27][28] Directly blending metal oxides, [29][30][31][32][33] sulfides, [34][35][36] nitrides, [37][38][39] and carbide 40,41 with various carbonaceous hosts has demonstrated considerable merits to mediate sulfur species' behaviors through chemisorption and/or electrocatalysis mechanisms. [42][43][44][45][46] Nevertheless, the low surface-to-volume ratio of these additives cannot entirely bring active sites to the reaction surface.…”

Section: Introductionmentioning

confidence: 99%

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Kong

Chang-xin

et al. 2019

InfoMat

279

170

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Lithium–sulfur (Li–S) batteries have extremely high theoretical energy density that make them as promising systems toward vast practical applications. Expediting redox kinetics of sulfur species is a decisive task to break the kinetic limitation of insulating lithium sulfide/disulfide precipitation/dissolution. Herein, we proposed a porphyrin‐derived atomic electrocatalyst to exert atomic‐efficient electrocatalytic effects on polysulfide intermediates. Quantifying electrocatalytic efficiency of liquid/solid conversion through a potentiostatic intermittent titration technique measurement presents a kinetic understanding of specific phase evolutions imparted by the atomic electrocatalyst. Benefiting from atomically dispersed “lithiophilic” and “sulfiphilic” sites on conductive substrates, the finely designed atomic electrocatalyst endows Li–S cells with remarkable cycling stablity (cyclic decay rate of 0.10% in 300 cycles), excellent rate capability (1035 mAh g−1 at 2 C), and impressive areal capacity (10.9 mAh cm−2 at a sulfur loading of 11.3 mg cm−2). The present work expands atomic electrocatalysts to the Li–S chemistry, deepens kinetic understanding of sulfur species evolution, and encourages application of emerging electrocatalysis in other multielectron/multiphase reaction energy systems.

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Section: Introductionmentioning

confidence: 99%

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Kong

Chang-xin

et al. 2019

InfoMat

279

170

View full text Add to dashboard Cite

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“…43 On the other hand, the Nyquist plot using esterbased electrolyte includes a depressed semicircle and a sloping straight line, respectively seen at the high frequency and low frequency, with the former related to the F I G U R E 8 Electrochemical impedance spectra analysis of S/MC 4 composite measured in ester-based and ether-based electrolyte charge transfer process (R ct ) and the latter referring to the Warburg diffusion process (W 1 ). 44 The charge transfer resistance and Warburg diffusion resistance of the sulfur cathode measured in ester electrolyte are 220.3 and 198.7 Ω, while the charge transfer resistance, Warburg diffusion resistance, and semi-infinite diffusion resistance of the sulfur cathode in ether electrolyte are 4.2, 318.5, and 14.1 Ω, respectively. Obviously, the S/MC composite electrode in ether-based electrolyte shows smaller internal resistances than that in ester-based electrolyte.…”

Section: Resultsmentioning

confidence: 97%

“…The inclined line in the low‐frequency region is corresponding to the Warburg impedance ( W 1 ), associated with semi‐infinite diffusion of soluble lithium polysulfides in the electrolyte ( R inf ). On the other hand, the Nyquist plot using ester‐based electrolyte includes a depressed semicircle and a sloping straight line, respectively seen at the high frequency and low frequency, with the former related to the charge transfer process ( R ct ) and the latter referring to the Warburg diffusion process ( W 1 ) . The charge transfer resistance and Warburg diffusion resistance of the sulfur cathode measured in ester electrolyte are 220.3 and 198.7 Ω, while the charge transfer resistance, Warburg diffusion resistance, and semi‐infinite diffusion resistance of the sulfur cathode in ether electrolyte are 4.2, 318.5, and 14.1 Ω, respectively.…”

Section: Resultsmentioning

confidence: 99%

A microporous carbon derived from metal‐organic frameworks for long‐life lithium sulfur batteries

Jiang

Liu

et al. 2019

Int J Energy Res

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Summary A polyhedral microporous carbon derived from metal‐organic frameworks (ZIF‐8) could present good property for sulfur loading and trapping. A melting‐evaporation route was adopted to synthesize two sulfur/microporous carbon (S/MC) composites, of which sulfur content is controllable, and ether‐based or ester‐based electrolytes were used to evaluate the synthesized composites for the lithium sulfur batteries. According to electrochemical results, the S/MC composite with 65.2 wt% S in the ether‐based electrolyte exhibited optimized performance as compared with the composite with 65.2 wt% S in the ester‐based electrolyte, as well as the composite with 58.6 wt% S in the two kinds of electrolytes. For the S/MC composite with 65.2 wt% S in ether‐based electrolyte, the initial discharge capacity could reach up to 1505.9 mAh g−1 and the reversible capacity could be 833.3 mAh g−1 after 40 cycles at 0.1 C. Furthermore, while being respectively evaluated at 0.5, 1.0, and 2.0 C, the discharge capacities could still maintain at 544, 493 and 354 mAh g−1 after 300, 500, and 800 cycles, demonstrating appreciable cyclic reversibility and rate capability.

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“…As shown in Figure , it can be clearly seen that the color of the electrolyte containing NOSPC‐1‐800 becomes lighter after 2 h. And after 12 h, the electrolyte becomes colorless, implying that Li 2 S 6 is completely adsorbed by the composite. According to previous reports, such important adsorption ability for polysulfides is the result of a proper chemical doping (N/O/S) which favors excellent anchoring effect ,. Moreover, appropriate polarity and good electrical conductivity are essential for Li−S redox reactions.…”

Section: Resultsmentioning

confidence: 99%

Biomass‐Derived N, O, and S‐Tridoped Hierarchically Porous Carbon as a Cathode for Lithium−Sulfur Batteries

Chabu

Liu

2019

ChemNanoMat

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Restraining soluble polysulfides from diffusing out of the cathode is fundamental to the development of high‐performance lithium−sulfur batteries. The porous architecture and unique physicochemical characteristics of biomass‐derived carbon materials makes it possible to improve the battery performance. Here, two types of porous carbon composites (NOSPC‐1 and NOSPC‐2) with in situ N, S and O tri‐doping are obtained from yam via chemical activation. Structural analysis reveals that NOSPC‐1 presents a highly graphitized interconnected micro‐/mesoporous architecture. As a sulfur host, NOSPC‐1‐800 with 70% sulfur initiates a high reversible discharge capacity of 1556 mAh g−1 at 0.2 C. The cathode further exhibits superior rate performance and long cycle life with 401.2 mAh g−1 reversible capacity and more than 95% coulombic efficiency after 450 cycles at 1 C. Our findings provide meaningful insights toward exploring novel biomass‐derived carbon materials for advanced Li−S batteries.

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Sulfur/nickel ferrite composite as cathode with high-volumetric-capacity for lithium-sulfur battery

Cited by 89 publications

References 57 publications

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

Expediting redox kinetics of sulfur species by atomic‐scale electrocatalysts in lithium–sulfur batteries

A microporous carbon derived from metal‐organic frameworks for long‐life lithium sulfur batteries

Biomass‐Derived N, O, and S‐Tridoped Hierarchically Porous Carbon as a Cathode for Lithium−Sulfur Batteries

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