Novel Bake-in-Salt Method for the Synthesis of Mesoporous Mn<sub>3</sub>O<sub>4</sub>@C Networks with Superior Cycling Stability and Rate Performance

Sun, Yuanwei; Jiao, Ranran; Zuo, Xintao; Tang, Rongfeng; Su, Huaifen; Xu, Dan; Sun, Dezhi; Zeng, Suyuan; Zhang, Xianxi

doi:10.1021/acsami.6b10121

Cited by 36 publications

(20 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is interesting to note from Figure c,d and Figure S2 (Supporting Information) that the discharge capacity of the C/SnO 2 (W) hollow nanospheres electrode suffers a slow decay in the initial few cycles and then gradually increase during the subsequent cycles. This similar phenomenon has also been previously reported for many metal oxide electrodes in the long life cycles . The slightly climbing‐up capacity of the C/SnO 2 (W) hollow nanospheres electrode may be mainly attributed to the following factors.…”

Section: Resultssupporting

confidence: 86%

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

Cheng

Wang

et al. 2017

Small

View full text Add to dashboard Cite

Due to the high theoretical capacity as high as 1494 mAh g , SnO is considered as a potential anode material for high-capacity lithium-ion batteries (LIBs). Therefore, the simple but effective method focused on fabrication of SnO is imperative. To meet this, a facile and efficient strategy to fabricate core-shell structured C/SnO hollow spheres by a solvothermal method is reported. Herein, the solid and hollow structure as well as the carbon content can be controlled. Very importantly, high-yield C/SnO spheres can be produced by this method, which suggest potential business applications in LIBs field. Owing to the dual buffer effect of the carbon layer and hollow structures, the core-shell structured C/SnO hollow spheres deliver a high reversible discharge capacity of 1007 mAh g at a current density of 100 mA g after 300 cycles and a superior discharge capacity of 915 mAh g at 500 mA g after 500 cycles. Even at a high current density of 1 and 2 A g , the core-shell structured C/SnO hollow spheres electrode still exhibits excellent discharge capacity in the long life cycles. Consideration of the superior performance and high yield, the core-shell structured C/SnO hollow spheres are of great interest for the next-generation LIBs.

show abstract

Section: Resultssupporting

confidence: 86%

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

Cheng

Wang

et al. 2017

Small

View full text Add to dashboard Cite

show abstract

“…Figure 5c displays the cycling performance of HCF/Mn 3 O 4 and commercial Mn 3 O 4 anodesa tacurrent density of 200 mA g À1 for1 00 cycles in the voltage range of 0.01-3 V. The first chargeand discharge capacities of the HCF/Mn 3 O 4 sample are about 1049 and 682 mA hg À1 ,r espectively.T he coulombic efficiency in the first cycle is about6 5%.T he large, irreversible capacity and initially low coulombic efficiency of the HCF/Mn 3 O 4 electrode may be attributed to the formationo ft he SEI and decomposition of the electrolyte. [50] Interestingly,a ni ncrease in capacity was observed during later cycles.T his phenomenon may be ascribed to the improvement of lithium-ion accessibility in the HCF/Mn 3 O 4 composite during the cycling process, which causes an increased accommodation behaviorf or lithium. [51] After the 100th cycle, the HCF/Mn 3 O 4 electrode still delivers as pecific discharge capacity of 835 mA hg À1 to reach 80 % of the first discharge capacity.T he Coulombic efficiency was retained at nearly (97 AE 2) %f rom the 4th to 100th cycles, which indicated the good reversibility of Li + ions in the HCF/Mn 3 O 4 electrode.…”

Section: Resultsmentioning

confidence: 98%

“…The coulombic efficiency in the first cycle is about 65 %. The large, irreversible capacity and initially low coulombic efficiency of the HCF/Mn 3 O 4 electrode may be attributed to the formation of the SEI and decomposition of the electrolyte . Interestingly, an increase in capacity was observed during later cycles.…”

Section: Resultsmentioning

confidence: 99%

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Zhang

Jiang

et al. 2018

Chemistry A European J

View full text Add to dashboard Cite

The practical applications of Mn O in lithium-ion batteries are greatly hindered by fast capacity decay and poor rate performance as a result of significant volume changes and low electrical conductivity. It is believed that the synthesis of nanoscale Mn O combined with carbonaceous matrix will lead to a better electrochemical performance. Herein, a convenient route for the synthesis of Mn O nanoparticles grown in situ on hollow carbon nanofiber (denoted as HCF/Mn O ) is reported. The small size of Mn O particles combined with HCF can significantly alleviate volume changes and electrical conductivity; the strong chemical interactions between HCF and Mn O would improve the reversibility of the conversion reaction for MnO into Mn O and accelerate charge transfer. These features endow the HCF/Mn O composite with superior cycling stability and rate performance if used as the anode for lithium-ion batteries. The composite delivers a high discharge capacity of 835 mA h g after 100 cycles at 200 mA g , and 652 mA h g after 240 cycles at 1000 mA g . Even at 2000 mA g , it still shows a high capacity of 528 mA h g . The facile synthetic method and outstanding electrochemical performance of the as-prepared HCF/Mn O composite make it a promising candidate for a potential anode material for lithium-ion batteries.

show abstract

“…Based on the above properties, crystal salt particles have been widely used as templates for the synthesis of nanomaterials. [ 13,47–69 ] The universal procedure comprises coating a precursor solution on the salt template, heat treating in a tube furnace under specific atmosphere, and washing out of the salt template with DI water to obtain 2D materials. [ 48–51,58,59 ] Differing from the CVD and other template methods, STM has the following characteristics: 1) Considering the removal of template, salt templates can be easily removed using water, as most salts are water soluble, whereas graphene and SBA‐15 require treatment with high temperatures or strong acid or base solutions.…”

Section: Stmmentioning

confidence: 99%

Salt‐Assisted Synthesis of 2D Materials

Huang

Jin

et al. 2020

Adv Funct Materials

126

112

View full text Add to dashboard Cite

2D materials have demonstrated good chemical, optical, electrical, and magnetic characteristics, and offer great potential in numerous applications. Corresponding synthesis technologies of 2D materials that are highquality, high-yield, low-cost, and time-saving are highly desired. Salt-assisted methods are emerging technologies that can meet these requirements for the fabrication of 2D materials. Herein, the recent process for the salt-assisted synthesis of 2D materials and their typical applications are summarized. First, the properties of salt crystals and molten salts are briefly introduced, and then some examples of 2D materials synthesis with the assistance of salt as well as their representative applications are presented. The underlying mechanisms of salts with different states on the formation of 2D morphology are discussed to aid in the rational design of synthetic route of 2D materials. At last, the challenges and future perspectives for salt-assisted methods are briefly described. This review provides guidance for the controllable synthesis of 2D materials based on the salt-assisted approaches.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201908486.MoO 3 , and LaNb 2 O 7 ), [14][15][16] layered double hydroxides (LDHs, e.g., Mg 6 Al 2 (OH) 16 CO 3 •4H 2 O), [17] hexagonal-boron nitride (h-BN), [2,18] transition metal halides (such as MoCl 2 and CrCl 3 ), [19] black phosphorus, [20] graphitic carbon nitride (g-C 3 N 4 ), [5] MXene (such as Ti 2 C and Ti 3 CN), [21][22][23][24][25] and clays (for instance, [(Mg 3 )(Si 2 O 5 ) 2 (OH) 2 ] and [(Al 2 )(Si 3 Al) O 10 (OH) 2 ]K). [19] Notably, many nonlayered structure species can also form 2D morphology with specific synthetic methods, largely expanding the 2D family (such as hexagonal-MoO 3 (h-MoO 3 ), hexagonal-WO 3 (h-WO 3 ), [15] transition metal nitrides (TMNs), [26,27] and transition metal phosphides (TMPs)). [28] To exploit the applications of 2D materials, the development of a synthetic method should be prioritized. Currently, synthesis processes of 2D materials could be divided into two categories, naming the top-down and bottom-up approaches. [29][30][31] Generally, exfoliation is the most common top-down method to produce monolayer or few-layer 2D materials. [19,32] Graphene was first prepared by mechanical exfoliation of highly oriented pyrolytic graphite with sellotape in 2004. [33] The exfoliation can weaken the interlayer Van der Waals force for bulk materials with layered crystal structures while maintain the covalent bonding in plane to produce monolayer or few-layer nanosheets. Although the productivity based on this method is limited due to the low efficiency, the exfoliation approach provides a new synthesis methodology for 2D materials. A series of studies on liquid exfoliation have been conducted by Coleman and co-workers. [19,34,35] By sonicating the bulk material in an appropriate solvent with similar interface energy, 2D material ink can be prepared. After the liq...

show abstract

Novel Bake-in-Salt Method for the Synthesis of Mesoporous Mn₃O₄@C Networks with Superior Cycling Stability and Rate Performance

Cited by 36 publications

References 50 publications

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Salt‐Assisted Synthesis of 2D Materials

Contact Info

Product

Resources

About

Novel Bake-in-Salt Method for the Synthesis of Mesoporous Mn3O4@C Networks with Superior Cycling Stability and Rate Performance

Cited by 36 publications

References 50 publications

Large‐Scale Fabrication of Core–Shell Structured C/SnO2 Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

Large‐Scale Fabrication of Core–Shell Structured C/SnO2 Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

In Situ Synthesis of Mn3O4 Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode

Salt‐Assisted Synthesis of 2D Materials

Contact Info

Product

Resources

About

Novel Bake-in-Salt Method for the Synthesis of Mesoporous Mn₃O₄@C Networks with Superior Cycling Stability and Rate Performance

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

Large‐Scale Fabrication of Core–Shell Structured C/SnO₂ Hollow Spheres as Anode Materials with Improved Lithium Storage Performance

In Situ Synthesis of Mn₃O₄ Nanoparticles on Hollow Carbon Nanofiber as High‐Performance Lithium‐Ion Battery Anode