CrPO4/C composite as a novel anode material for lithium-ion batteries

Hu, Lizhen; Zheng, Shuai; Cheng, Siqi; Chen, Zhuo; Huang, Bin; Liu, Qingquan; Xiao, Shunhua; Yang, Jianwen; Chen, Quanqi

doi:10.1016/j.jpowsour.2019.227180

Cited by 13 publications

(5 citation statements)

References 44 publications

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“…As shown in Figure S4, for NiS@ C-Na 2 SO 4 , NiS@C-NaCl, and NiS@C-Na 2 CO 3 , two peaks were situated at 1375/1553, 1365/1566, and 1361/1589 cm −1 , indexing into the D peak of amorphous carbon and the G peak of crystalline graphite. 37,38 According to previous reports, two broad peaks revealed the existence of carbon. 39,40 Utilizing Gaussian function, an XPS spectrum in the range 1000−2000 cm −1 could be divided into five peaks as follows: I-band (attributed to heteroatoms or impurities on the graphitic layer, such as S and N), D-band (ascribed to the A 1g vibration mode, which represented the defects of sp 3 ), G-band (resulting from the E 2g vibration mode presented in sp 2 boned graphitic carbons), D′-band, and D″-band (relating to defects in graphene layer stacking).…”

Section: Exploring the Physical-chemical Properties Ofmentioning

confidence: 70%

“…The introduction of S and N atoms could provide more active sites, contributing the rapid diffusion of ions. , For further exploring the carbon structure, Raman spectra are shown in Figure S4 (Supporting Information) and Figure e,f. As shown in Figure S4, for NiS@C-Na 2 SO 4 , NiS@C-NaCl, and NiS@C-Na 2 CO 3 , two peaks were situated at 1375/1553, 1365/1566, and 1361/1589 cm –1 , indexing into the D peak of amorphous carbon and the G peak of crystalline graphite. , According to previous reports, two broad peaks revealed the existence of carbon. , Utilizing Gaussian function, an XPS spectrum in the range 1000–2000 cm –1 could be divided into five peaks as follows: I-band (attributed to heteroatoms or impurities on the graphitic layer, such as S and N), D-band (ascribed to the A 1g vibration mode, which represented the defects of sp 3 ), G-band (resulting from the E 2g vibration mode presented in sp 2 boned graphitic carbons), D′-band, and D″-band (relating to defects in graphene layer stacking) . In Figure e,f, the intensity ratios of the D-band and G-band ( I D / I G ) were about 1.204, 1.181, and 1.018 (in the order of NiS@C-NaCl > NiS@C-Na 2 CO 3 > NiS@C-Na 2 SO 4 ), indicating the decreasing in disorder.…”

Section: Resultsmentioning

confidence: 94%

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Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Zeng

Yuan

et al. 2022

ACS Appl. Mater. Interfaces

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Owing to its fascinating properties (such as high theoretical specific capacity and considerable conductivity), nickel sulfide (NiS) was investigated comprehensively as an anode material in sodium-ion batteries. However, they still suffered from volume expansion and sluggish kinetics, resulting in serious cycle capabilities. Herein, through controlling the kind of molten salts (Na 2 SO 4 , NaCl, and Na 2 CO 3 ) in salt melt synthesis (SMS), a series of NiS with an N, S-codoped carbon layer was successfully prepared, accompanied with different morphologies and structures (earthworm-like belts and triangular and spherical particles). Tailored by the ionic strength and viscosity of molten salts, the as-prepared samples displayed different crystallization behaviors, bringing about a difference in electrochemical performance. As earthworm-like NiS@C was explored as an anode material for SIBs, an initial capacity of 712.5 mAh g −1 at 0.5 A g −1 could be obtained, and it still kept 527.4 mAh g −1 after 100 cycles. Even at 2.0 A g −1 , a capacity of 508.6 mAh g −1 could be achieved. Meanwhile, with the assistance of detailed kinetic analysis, the rapid diffusion behaviors of Na + and redox reaction mechanisms of as-fabricated samples were proven for the enhanced electrochemical properties. Given this, this work is expected to provide a method for designing the morphology and structure of metal sulfides, while shedding light on the orientation of fabricating advanced electrode materials for SIBs.

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Section: Exploring the Physical-chemical Properties Ofmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 94%

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Zeng

Yuan

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

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“…The next-generation battery system is designed for vaster energy utilization since the power output of traditional batteries DOI: 10.1002/adfm.202311257 is approaching its theoretical limits. [1][2][3][4] With its advantage of high theoretical capacity (1675 mAh g −1 for sulfur cathode) and low cost, the lithium-sulfur batteries (LSBs) have earned extensive attraction in recent decades. [5][6][7][8] However, several key issues, such as the low electron conductivity of sulfur, the wild polysulfides shuttle, the drastic volume change, and lithium dendrite growth of electrodes, largely influence the performance of LSBs.…”

Section: Introductionmentioning

confidence: 99%

Pyridyl Porphyrin as Electrocatalyst: Regulating the Redox Conversion of Lithium Polysulfides under Voltage

Zhou,

Liu,

et al. 2023

Adv Funct Materials

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The binding correlation between electrocatalyst and lithium polysulfides (LiPSs) determines the regulation of LiPSs’ redox conversion. However, how the correlation works on the LiPSs under voltage remains obscured. In this paper, the π‐conjugated aromatic pyridyl porphyrin with nitrogen of a lone pair of electrons is introduced as electrocatalyst to accelerate redox kinetics and inhibit polysulfides shuttle. On the foundation of DFT calculation and experimental tests, it is stated that the chemical binding between pyridyl porphyrin and lithium polysulfides is beefed up under higher voltage, which facilitates the charge transfer. Moreover, the molecular dynamics (MD) simulation of the solid‐liquid model shows that the presence of pyridyl porphyrin increases the binding chances between Li+ and S62− and forms clusters rather than dissolving in electrolyte, which is good for charge transfer and polysulfides localization. By hybridizing the pyridyl porphyrin with conductive cathode matrix of carbon nanotube and graphene oxide, the as‐fabricated Li2S‐T4PP‐GO‐CNT cathode delivers a high initial discharge capacity of 996.4 mAh g−1 at 0.1 C. The as‐made batteries with good electrochemical performance therefore show potential for trouble‐shooting and commercial utilization of lithium‐sulfur batteries (LSBs) in the future.

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“…The development of large-capacity, environmentally friendly, and reduced-cost electrochemical energy storage devices is the key to meeting the requirements for the current electric vehicle industry. − Currently, Li–S batteries have become one of the best candidate materials for new accumulated energy devices due to their excellent theoretical energy density (2600 W h kg –1 ), high theoretical specific capacity (1675 mA h g –1 ), abundant sulfur resources, reduced cost, and environmental protection process . However, its commercialization still faces great obstacles: (1) the insulation problem of S 8 and Li 2 S 2 /Li 2 S; (2) the dissolution and shuttle of intermediate species lithium polysulfides (LiPSs); (3) up to 80% volume expansion; and (4) slow conversion reaction kinetics.…”

Section: Introductionmentioning

confidence: 99%

Improving the Electrochemical Performance of Li–S Batteries via a MnCo₂S₄–CoS_1.097 Heterostructure with a Hollow Structure and High Catalytic Activity

Zhou

Zeng

et al. 2022

ACS Appl. Energy Mater.

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Rechargeable lithium−sulfur (Li−S) batteries are thought to be one of the most important candidate materials for new accumulated energy devices due to the preeminent theoretical specific capacity and energy density. Nevertheless, the shuttle effect of higher-order lithium polysulfide (LiPSs) severely impedes its actual practice. In this work, the hollow tubular MnCo 2 S 4 −CoS 1.097 heterostructure composite is explored as the effective sulfur host to provide strong chemisorption and swift kinetics of LiPSs redox reactions so as to limit the dissolution and shuttle of LiPSs and obtain a prominent electrochemical performance. As a consequence, the assembled cathode based on the MnCo 2 S 4 −CoS 1.097 heterostructure host exhibits a prominent initial specific capacity of 973 mA h g −1 at a high rate of 1 C and still retains a capacity of 762 mA h g −1 even after 500 cycles with a capacity decay rate per cycle of 0.041%. Especially, the MnCo 2 S 4 −CoS 1.097 /S cathode is fully operational even at a high sulfur load of 6 mg cm −2 . Therefore, this work highlights a new strategy for the rational design of the heterostructure and provides a new idea for the industrial applications of Li−S batteries.

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CrPO4/C composite as a novel anode material for lithium-ion batteries

Cited by 13 publications

References 44 publications

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Pyridyl Porphyrin as Electrocatalyst: Regulating the Redox Conversion of Lithium Polysulfides under Voltage

Improving the Electrochemical Performance of Li–S Batteries via a MnCo₂S₄–CoS_1.097 Heterostructure with a Hollow Structure and High Catalytic Activity

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CrPO4/C composite as a novel anode material for lithium-ion batteries

Cited by 13 publications

References 44 publications

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Controlling of Ni-Based Composites in Salt Melt Synthesis with High Sodium-Ion Storage Performance

Pyridyl Porphyrin as Electrocatalyst: Regulating the Redox Conversion of Lithium Polysulfides under Voltage

Improving the Electrochemical Performance of Li–S Batteries via a MnCo2S4–CoS1.097 Heterostructure with a Hollow Structure and High Catalytic Activity

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Resources

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Improving the Electrochemical Performance of Li–S Batteries via a MnCo₂S₄–CoS_1.097 Heterostructure with a Hollow Structure and High Catalytic Activity