Tuning lithium storage properties of cubic Co3O4 crystallites: The effect of oxygen vacancies

Liu, Yanguo; Zhang, Hongzhi; Wan, Haicheng; Zhang, Wanxing; Jiang, Nan; Huang, Guoyong; Wang, Zhiyuan; Luo, Shaohua; Sun, Hongyu

doi:10.1016/j.jallcom.2019.02.123

Cited by 31 publications

(15 citation statements)

References 56 publications

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“…Transition‐metal oxides (TMOs) such as NiO, [3] Fe 2 O 3 , [4] TiO 2 , [5] Co 3 O 4 [6] especially the binary TMOs of MCo 2 O 4 (M=Ni, Mn, Zn, Cu) [7] are considered as alternative anode materials because of their high theoretical capacities. However, the lower electrical conductivity, large volume change and structure collapse during charge‐discharge process inhibit there practical application.…”

Section: Introductionmentioning

confidence: 99%

Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

et al. 2021

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In this work, the oxygen‐vacancy abundant NiCo2O4 grown on the N‐doped carbon nanosheets are designed and fabricated through a facile procedure. The obtained special structure combined with the oxygen vacancies effectively enhance the contact area, keep the structural integrity as well as accelerate the electron and lithium ion transfer. As an anode for lithium ion batteries, the special architecture exhibits good cycle stability (1096 mAh g−1 after 100 cycles at current density of 200 mA g−1) and long cycle capability at high current rate (398 mAh g−1 after 500 cycles at 5000 mA g−1). The advantageous features by constructing oxygen‐vacancy abundant transition metal oxides with the conductive N‐doped carbon nanosheets may pave the way for improving the electrochemical performance.

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Section: Introductionmentioning

confidence: 99%

Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

et al. 2021

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“…The concentration of OVs analysed semi-quantitatively by deconvoluting the O 1s XPS peak did not increase monotonically with increasing the annealing temperature, where the highest concentration was achieved at 250 °C. Co 3 O 4 with the maximum OVs concentration delivered the highest capacity and the best rate capability when tested in LIB halfcells, among all the Co 3 O 4 samples [40]. Besides anode materials, there have also been reports on creating OVs in cathode materials by annealing them in an inert atmosphere.…”

Section: Heat Treatment In Oxygen-deficient Atmospheresmentioning

confidence: 98%

“…When used as an anode in SIBs, the oxygen-deficient SnO 2 exhibited improved cycle stability and rate capability compared with its airannealed counterpart. Liu et al [40] created OVs in Co 3 O 4 by annealing it in Ar and adjusted the concentration of OVs by simply adjusting the temperature (150, 250 and 350 °C). The concentration of OVs analysed semi-quantitatively by deconvoluting the O 1s XPS peak did not increase monotonically with increasing the annealing temperature, where the highest concentration was achieved at 250 °C.…”

Section: Heat Treatment In Oxygen-deficient Atmospheresmentioning

confidence: 99%

“…Unbalanced charge distribution can appear around the sites of OVs and lead to the formation of the local built-in electric field, which could facilitate ion transfer [40,119,120]. As shown in Figure 11a, the presence of an OV in the material induces a lopsided charge distribution to emerge, which leads to a positive area in the OV site and an equivalent negative area around the OV due to the excess electrons, hence resulting in a built-in electric field [121].…”

Section: Inducing Built-in Electric Fieldmentioning

confidence: 99%

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The role of oxygen vacancies in metal oxides for rechargeable ion batteries

Wei

2021

Sci. China Chem.

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Rechargeable ion batteries are one of the most reliable energy storage technologies for the applications ranging from small portable devices and electric vehicles to renewable energy integration and large-scale stationary energy storage. In the roadmap of developing and understanding new electrode materials for rechargeable ion batteries, oxygen vacancies, known as defects in metal oxides, have shown a high impact on the final electrochemical performance of the oxides. The present review aims to summarise the synthesis methods and characterisation techniques of oxygen vacancies as well as some of the most recent and exciting progress made to understand the role of oxygen vacancies in the electrochemical performance of Li-, Na-, K-and Zn-ion batteries. This review discusses not only the role of oxygen vacancies directly in electrode materials and indirectly in the coating layers on electrode materials, but also the synergistic role of oxygen vacancies interplaying with other contributors such as carbonaceous materials, doping, amorphisation, structural transformation, nanostructuring and functional coating. Finally, perspectives are given to stimulate new ideas and open questions to facilitate the further development of oxygen deficient electrode materials in energy research landscape.

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“…Several modification methods, such as thermal annealing treatment [28][29][30], acid etching [31] or alkali etching [32], NaBH 4 reduction treatment [26,33,34], and hydrazine hydrate reduction treatment [24,25,35], have been reported in previous studies to generate the defective structures in electrode materials. Among these methods, hydrazine hydrate as a mild reducer has received considerable attention.…”

Section: Introductionmentioning

confidence: 99%

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

et al. 2022

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Porous structure and surface defects are important to improve the performance of supercapacitors. In this study, a facile pathway was developed for high-performance supercapacitors, which can produce transition metal hydroxides (LDHs) with abundant porous structure and surface defects. The NiCo-SDBS-LDH was prepared by one-step hydrothermal reaction using sodium dodecylbenzene sulfonate (SDBS) as anionic surfactant. And then, three dimensional (3D) interconnected porous flower-like 3D-NiCo-SDBS-LDH microspheres were designed and synthesized using the gas-phase hydrazine hydrate reduction method. Results showed that the hydrazine hydrate reduction not only introduces a large number of pores into 3D-NiCo-SDBS-LDH microspheres and causes the formation of oxygen vacancies, but it also roughens the surface of the microspheres. All these changes contribute to the enhancement of electrochemical activity of 3D-NiCo-SDBS-LDH; the NiCo-SDBS-LDH electrode after hydrazine hydrate treatment (3D-NiCo-SDBS-LDH) exhibits a higher specific capacitance of 1148 F·g−1 at 1 A·g−1 (about 1.46 times larger than that of NiCo-SDBS-LDH) and excellent long cycle life with 94% retention after 4000 cycles. Moreover, the assembled 3D-NiCo-SDBS-LDH//AC (active carbon) asymmetric supercapacitor (ASC) achieves remarkable energy density of 73.14 W h·kg−1 at 800 W·kg−1 and long-term cycling stability of 95.5% retention for up to 10,000 cycles. The outstanding electrochemical performance can be attributed to the synergy between the rich porous structure and the roughened surface that has been created by the hydrazine hydrate treatment.

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Tuning lithium storage properties of cubic Co3O4 crystallites: The effect of oxygen vacancies

Cited by 31 publications

References 56 publications

Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

The role of oxygen vacancies in metal oxides for rechargeable ion batteries

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

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Tuning lithium storage properties of cubic Co3O4 crystallites: The effect of oxygen vacancies

Cited by 31 publications

References 56 publications

Oxygen‐Vacancy Abundant NiCo2O4 on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

Oxygen‐Vacancy Abundant NiCo2O4 on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

The role of oxygen vacancies in metal oxides for rechargeable ion batteries

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

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Product

Resources

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Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries

Oxygen‐Vacancy Abundant NiCo₂O₄ on the N‐Doped Carbon Nanosheets as Anode for High Performance Lithium Ion Batteries