High-rate FeS2/CNT neural network nanostructure composite anodes for stable, high-capacity sodium-ion batteries

Chen, Yuanyuan; Hu, Xudong; Evanko, Brian; Sun, Xiaohong; Li, Xin; Hou, Tianyi; Cai, Shu; Zheng, Chunming; Hu, Wenbin; Stucky, Galen D.

doi:10.1016/j.nanoen.2018.01.039

Cited by 200 publications

(112 citation statements)

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“…Therefore, the research of electrode materials with high specific capacitance has become a hot and challenging issue in the electrochemical field. At present, the transition metal oxides, sulfides, and hydroxides electrode materials that rely on redox reaction for energy storage are studied more. Among them, layered double hydroxide (LDH) has attracted more attention due to its unique layered structures.…”

Section: Introductionmentioning

confidence: 99%

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

et al. 2019

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This article is a study of a novel method for the preparation of cobalt–manganese layered double hydroxide (CoMn‐LDH). An impinging stream–rotating packed‐bed (IS–RPB) reactor is used with a coprecipitation method to prepare CoMn‐LDH. The results show that the IS–RPB reactor has a good strengthening effect on the physical and electrochemical properties of CoMn‐LDH. Compared with CoMn‐LDH prepared by a traditional stirred reactor, the sample prepared by IS–RPB has smaller particle size (187.9 nm), larger specific surface area (92.5 m2 g−1), higher specific capacitance (1477 F g−1 at 1 A g−1), better rate capability (70.2% retention at 5 A g−1), and longer cycling life. All in all, this work provides a means to continuously prepare CoMn‐LDH electrode materials with outstanding performance.

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Section: Introductionmentioning

confidence: 99%

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

et al. 2019

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“…In the reverse process, two anodic peaks at 1.1 and 1.3 V can be assigned to the reoxidation of Fe to Fe 2+ and Fe 3+ species. Notably, the cathodic peak at ≈0.9 V disappears in the following cycles, as a result of loss of structural ordering of FeS 2 18a. Besides a high capacity and CE, S‐Fe 2 O 3 demonstrates a superiority cycling.…”

mentioning

confidence: 98%

“…Such a high CE may eliminate the necessity of presodiation, and thus is significant for practical application . In the first cycle of CV profile (Figure b), a major cathodic peak at ≈0.9 V represents the intercalation of Na + ions into surface FeS 2 , while the minor peak at 0.7 V might be attributed to the conversion from Na x FeS 2 to Fe and Na 2 S, accompanying with the formation of solid electrolyte interphase (SEI). The following cathodic peaks below 0.5 V reflect the conversion of Fe 2 O 3 to Fe and Na 2 O 7a.…”

mentioning

confidence: 99%

“…In order to understand the structural evolution of S‐Fe 2 O 3 upon Na + storage, XRD measurement was carried out at various (de)sodiation stages of the first cycle ( Figure a,b). Upon initial discharge (sodiation) to 1.0 V, a weak peak at 31.9° appears, characteristic of NaFeS 2 , which was further reduced to Na 2 S upon discharge to 0.5 V 18b. Peaks due to Na 2 O (PDF No.…”

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confidence: 99%

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Highly Efficient Sodium Storage in Iron Oxide Nanotube Arrays Enabled by Built‐In Electric Field

Sun

2019

Advanced Materials

136

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High‐power sodium–ion batteries capable of charging and discharging rapidly and durably are eagerly demanded to replace current lithium–ion batteries. However, poor activity and instable cycling of common sodium anode materials represent a huge barrier for practical deployment. A smart design of ordered nanotube arrays of iron oxide (Fe2O3) is presented as efficient sodium anode, simply enabled by surface sulfurization. The resulted heterostructure of oxide and sulfide spontaneously develops a built‐in electric field, which reduces the activation energy and accelerates charge transport significantly. Benefiting from the synergy of ordered architecture and built‐in electric field, such arrays exhibit a large reversible capacity, a superior rate capability, and a high retention of 91% up to 200 cycles at a high rate of 5 A g−1, outperforming most reported iron oxide electrodes. Furthermore, full cells based on the Fe2O3 array anode and the Na0.67(Mn0.67Ni0.23Mg0.1)O2 cathode deliver a specific energy of 142 Wh kg−1 at a power density of 330 W kg−1 (based on both active electrodes), demonstrating a great potential in practical application. This material design may open a new door in engineering efficient anode based on earth‐abundant materials.

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“…Recently, transition metal sulfides/selenides (MXs), such as MoSe 2 , FeS 2 , CoS 2 , MoS 2 , have been explored as promising anode materials for the SIBs due to their high theoretical capacity and versatile material species . Among them, cobalt diselenide (CoSe 2 ) has received tremendous attention because of its zero bandgap, high theoretical capacity, low cost, and eco‐friendly .…”

Section: Introductionmentioning

confidence: 99%

Effect of Crystal Structures on Electrochemical Performance of Hierarchically Porous CoSe₂ Spheres as Anodes for Sodium‐Ion Batteries

Liu

Tang

et al. 2020

ChemElectroChem

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Metal selenides with controllable crystal structures and hierarchically porous architectures have recently attracted great attention as the advanced electrode materials for sodium‐ion batteries. In present study, hierarchically porous orthogonal CoSe2 (o‐CoSe2) and cubic CoSe2 (c‐CoSe2) spheres are prepared through a controllable selenization and subsequent annealing strategy. Both types of CoSe2 spheres exhibit superior electrochemical properties resulting from hierarchical architecture, which can alleviate of the structural strain, the accelerated electron transmission and shorten the diffusion pathway of Na+. As anode materials for SIBs, the o‐CoSe2 electrode delivers a higher rate capability of 244 mAh g−1 at 3000 mA g−1 and a better cyclability of 378 mAh g−1 after 100 cycles at 1000 mA g−1 compared to the c‐CoSe2. From detailed microstructure characterization and kinetics behavior analysis, it is revealed that the o‐CoSe2 spheres exhibits larger specific surface, optimized porous nature, higher pseudocapacitive contribution, and more powerful Na+‐ions mobility. Our studies can pave the way for rational design and development of selenides electrode materials in rechargeable batteries.

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High-rate FeS2/CNT neural network nanostructure composite anodes for stable, high-capacity sodium-ion batteries

Cited by 200 publications

References 70 publications

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

Highly Efficient Sodium Storage in Iron Oxide Nanotube Arrays Enabled by Built‐In Electric Field

Effect of Crystal Structures on Electrochemical Performance of Hierarchically Porous CoSe₂ Spheres as Anodes for Sodium‐Ion Batteries

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High-rate FeS2/CNT neural network nanostructure composite anodes for stable, high-capacity sodium-ion batteries

Cited by 200 publications

References 70 publications

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

Impinging Stream–Rotating Packed‐Bed Reactor Combination Coprecipitation Synthesis of Cobalt–Manganese‐Layered Double Hydroxide for Electrode Materials

Highly Efficient Sodium Storage in Iron Oxide Nanotube Arrays Enabled by Built‐In Electric Field

Effect of Crystal Structures on Electrochemical Performance of Hierarchically Porous CoSe2 Spheres as Anodes for Sodium‐Ion Batteries

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Effect of Crystal Structures on Electrochemical Performance of Hierarchically Porous CoSe₂ Spheres as Anodes for Sodium‐Ion Batteries