Scalable Dry Production Process of a Superior 3D Net‐Like Carbon‐Based Iron Oxide Anode Material for Lithium‐Ion Batteries

Li, Min; Du, Haoran; Kuai, Long; Huang, Kuangfu; Xia, Yuanyuan; Geng, Baoyou

doi:10.1002/anie.201707647

Cited by 137 publications

(51 citation statements)

References 53 publications

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“…As shown in Figure c, the NiO/GQDsCOOH microspheres exhibit an obviously better cycling performance than NiO, i.e., almost no capacity decay is observed during charging/discharging and a high reversible capacity of 1081 mAh g −1 remained after 250 cycles, indicating a retention rate of ≈120.7% when compared to the charge capacity in the first cycle. The high retention rate indicates an activation process for the NiO/GQDsCOOH during cycling, which has also been observed for previous transitional metal oxides . In addition, the NiO/GQDsNH 2 microspheres also exhibit a better performances than pure NiO, i.e., a specific capacity of ≈834 mAh g −1 after 250 cycles at 0.1 A g −1 .…”

Section: Resultssupporting

confidence: 76%

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

Yin

Chen

Zhi

et al. 2018

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Yolk-shell NiO microspheres are modified by two types of functionalized graphene quantum dots (denoted as NiO/GQDs) via a facile solvothermal treatment. The modification of GQDs on the surface of NiO greatly boosts the stability of the NiO/GQD electrode during long-term cycling. Specifically, the NiO with carboxyl-functionalized GQDs (NiO/GQDsCOOH) exhibits better performances than NiO with amino-functionalized GQDs (NiO/GQDsNH ). It delivers a capacity of ≈1081 mAh g (NiO contribution: ≈1182 mAh g ) after 250 cycles at 0.1 A g . In comparison, NiO/GQDsNH electrode holds ≈834 mAh g of capacity, while the bald NiO exhibits an obvious decline in capacity with ≈396 mAh g retained after cycling. Except for the yolk-shell and mesoporous merits, the superior performances of the NiO/GQD electrode are mainly ascribed to the assistance of GQDs. The GQD modification can support as a buffer alleviating the volume change, improve the electronic conductivity, and act as a reservoir for electrolytes to facilitate the transportation of Li . Moreover, the enrichment of carboxyl/amino groups on GQDs can further donate more active sites for the diffusion of Li and facilitate the electrochemical redox kinetics of the electrode, thus together leading to the superior lithium storage performance.

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Section: Resultssupporting

confidence: 76%

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

Yin

Chen

Zhi

et al. 2018

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“…[ 14 ] Second, the abundant interconnected pores in 3D structure provides highly efficient ion migration channels. [ 15–17 ] Third, 3D assembly of TMO nanoparticles significantly improves the structural integrity by releasing internal stress in all directions. [ 5,18 ] However, the preparation methods and the template selections hinder the well interconnected 3D network construction of TMO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Guo

Zhou

et al. 2020

Adv Funct Materials

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The lack of precise control of particle sizes is the critical challenge in the assembly of 3D interconnected transition-metal oxide (TMO) for newlyemerging energy conversion devices. A self-embedded templating strategy for preparing the TMO@carbon quasiaerogels (TMO@C-QAs) is proposed. By mimicking an aerogel structure at a microscale, the TMO@C-QA successfully assembles size-controllable TMO nanoparticles into 3D interconnected structure with surface-enriched carbon species. The morphological evolutions of intermediates verify that the self-embedded Ostwald ripening templating approach is responsible for the dualchannel TMO@C-QA formation. The general self-embedded templating strategy is easily extended to prepare various TMO@C-QAs, including the Co 3 O 4 @C-QA, Mn 3 O 4 @C-QA, Fe 2 O 3 @C-QA, and NiO@C-QA. Benefiting from the unparalleled 3D interconnected network of aerogels, the Co 3 O 4 @C-QA displays superior bifunctional catalytic activities for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), as well as high specific capacity and excellent long-term stability for lithium-ion battery (LIB) anode. A proof-of-concept battery-powered electrolyzer with Co 3 O 4 @C-QA cathode and anode powered by a full LIB with Co 3 O 4 @C-QA anode is presented. The battery-powered electrolyzer made of the state-ofthe-art TMOs can exhibit great competitive advantages due to its supreme multifunctional energy conversion performance for future water electrolysis.

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“…Figure S11a shows the CV curves at a scan rate of 0.2 mV s −1 for the first three cycles. In the first cathodic cycle, the peak located at 0.6 V was indexed to the reduction of Fe 3+ to Fe 0 and reduction peaks around 1.5 V and 2.0 V were ascribed to the reaction CuS+2Li + +2e − →Cu+Li 2 S. In the first anodic scan, peaks attributed to the oxidation reactions of Fe 0 at 1.0 V and 1.9 V, and oxidation of Cu 0 at 2.4 V were observed . In the subsequent two cycles, the peak intensities dropped significantly, and the reduction peaks shifted to 0.7 V, 1.5 V, and 2.1 V respectively while the oxidation peaks shifted to 1.0 V, 1.9 V and 2.4 V respectively, suggesting formation of SEI films and irreversible side reactions.…”

Section: Resultsmentioning

confidence: 99%

Selective Solid‐Liquid Interface Sulfidation Growth of Hierarchical Copper Sulfide and Its Hybrid Nanoflakes for Superior Lithium‐Ion Storage

Zhang

Ding

Huang

et al. 2020

Chemistry An Asian Journal

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Two-dimensional metal sulfides and their hybrids are emerging as promising candidates in various areas. Yet, it remains challenging to synthesize high-quality 2D metal sulfides and their hybrids, especially iso-component hybrids, in a simple and controllable way. In this work, a lowtemperature selective solid-liquid sulfidation growth method has been developed for the synthesis of CuS nanoflakes and their hybrids. CuS nanoflakes of about 20 nm thickness and co-component hybrids CuO x /CuS with variable composition ratios derived from different sulfidation time are obtained after the residual sulfur removal. Besides, benefiting from the mild low-temperature sulfidation conditions, selective sulfida-tion is realized between Cu and Fe to yield iso-component FeO x /CuS 2D nanoflakes of about 10-20 nm thickness, whose composition ratio is readily tunable by controlling the precursor. The as-synthesized FeO x /CuS nanoflakes demonstrate superior lithium storage performance (i. e., 707 mAh g À 1 at 500 mA g À 1 and 627 mAh g À 1 at 1000 mA g À 1 after 450 cycles) when tested as anode materials in LIBs owing to the advantages of the ultrathin 2D nanostructure as well as the lithiation volumetric strain self-reconstruction effect of the co-existing two phases during charging/discharging processes.

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Scalable Dry Production Process of a Superior 3D Net‐Like Carbon‐Based Iron Oxide Anode Material for Lithium‐Ion Batteries

Cited by 137 publications

References 53 publications

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

Functionalized Graphene Quantum Dot Modification of Yolk–Shell NiO Microspheres for Superior Lithium Storage

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Selective Solid‐Liquid Interface Sulfidation Growth of Hierarchical Copper Sulfide and Its Hybrid Nanoflakes for Superior Lithium‐Ion Storage

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