A high capacity porous Co3O4@graphene composite as lithium battery anode

Sheng, Yun; Wang, Yishan; Lan, Bo; Zhang, Xueqian; Wei, Chuncheng; Wen, Guangwu

doi:10.1016/j.vacuum.2022.111266

Cited by 28 publications

(10 citation statements)

References 44 publications

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“…Two peaks located at 1327 and 1589 cm –1 belong to the D-band peak and G-band peak of carbon, respectively. The intensity ratio of the D-band peak and G-band peak is greater than 1.1, implying that the wrapped GO has defects. , …”

Section: Resultsmentioning

confidence: 96%

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Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

2023

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A graphene oxide-wrapped Co3O4/NiO (denoted as CNO/GO) micron flower is successfully synthesized by a rapid solvothermal method, which is formed through interpenetrating nanosheets. Nanosheets with a large specific surface area expose a large number of active sites for an electrochemical reaction. Moreover, abundant pores formed during the interpenetration of nanosheets are instrumental in providing enough buffer space to relieve the large volume expansion from the repeated lithium insertion/delithiation processes, and the tightly wrapped GO can effectively sustain the stability of the CNO micron flower structure during the long-term cycle processes. The reversible specific capacity as high as 602.9 mA h g–1 is maintained after 800 cycles at 5000 mA g–1. In addition, GO with good conductivity can greatly enhance the conductivity of CNO micron flowers, accelerate the transfer of electrons, and then achieve a high rate performance (the reversible specific capacity is 570.2 mA h g–1 at 10 000 mA g–1). This work provides a viable method for synthesizing the CNO micron flowers as a promising high-performance transition metal oxide anode for lithium-ion batteries.

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Section: Resultsmentioning

confidence: 96%

“…implying that the wrapped GO has defects. 30,31 SEM images of the CNO microflowers, CNO/GO microflowers, and SCNO microspheres are shown in Figures S1 and2c−h. CNO microflowers exhibit a good dispersion, and the diameter of microflowers ranges from 500 nm to 2 μm (Figures 2c and S1).…”

Section: ■ Introductionmentioning

confidence: 99%

Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

2023

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“…The cycling stability of porous Co 3 O 4 microspheres, Co 3 O 4 /VG/CNT composite microspheres, and dense Co 3 O 4 microspheres is shown in Figure a. The initial charge specific capacity was significantly lower than the discharge specific capacity due to the formation of solid electrolyte interphase films, which was a common phenomenon of transition-metal oxides. − The initial reversible specific capacities of Co 3 O 4 /VG/CNT composite microspheres, porous Co 3 O 4 , and dense Co 3 O 4 microspheres were 1281, 883, and 879 mA h g –1 , respectively, and Co 3 O 4 /VG/CNT composite microspheres showed the highest charge/discharge specific capacity during 100 cycles at 100 mA g –1 . The reversible specific capacity as high as 1083 mA h g –1 was retained after 100 cycles.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Co₃O₄/VG/CNT Composite Microspheres with Excellent Lithium Storage Performance

Yang

Zhu

et al. 2022

Ind. Eng. Chem. Res.

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In order to improve the conductivity of Co3O4, Co3O4/VG/CNT composite microspheres were prepared by facile spray drying method and subsequently plasma-enhanced chemical vapor deposition method. A three-dimensional conductivity network was constructed by vertical graphenes and CNTs distributed throughout the microspheres, the transmission of electrons was greatly promoted, excellent rate performance was realized, and the high average reversible specific capacity of 526 mA h g–1 was still retained at 1000 mA g–1. Besides, thanks to the abundant pores distributed in the whole microspheres, the stress could be greatly released during the repeated charging/discharging processes, long cycling stability could be achieved, and the reversible specific capacity as high as 396 mA h g–1 was retained after 1000 cycles at 800 mA g–1. The preparation of Co3O4/VG/CNT composite microspheres can provide a new idea for high-performance lithium-ion battery anode materials.

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“…To illustrate the excellent performance of GN/CoO x /CBC materials in this paper, the performance data of some material electrodes reported in recent years are compared (Table 1). [23–31] It is obvious that the GN/CoO x /CBC material has a good capacity, demonstrating that the GN/CoO x /CBC have a unique three‐dimensional nanofibrous conductive network and two‐dimensional “flexible confinement” function. The better rate performance is attributed to the unique hybrid structure, which creates larger space and leads to a large electrode‐electrolyte interfacial area.…”

Section: Discussionmentioning

confidence: 99%

“…To illustrate the excellent performance of GN/CoO x /CBC materials in this paper, the performance data of some material electrodes reported in recent years are compared (Table 1). [23][24][25][26][27][28][29][30][31] It is obvious that the GN/CoO x /CBC material has a good capacity, demonstrating that the GN/CoO x / CBC have a unique three-dimensional nanofibrous conductive network and two-dimensional "flexible confinement" function.…”

Section: Chemistryselectmentioning

confidence: 99%

Interlaced CoO_x Nanosheets Composited with Reduced Graphene Oxide and Carbonized Bacterial Cellulose as Anode Materials for Lithium‐ion Batteries

et al. 2023

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Constructing peculiar carbon-based networks built from hybrid structures has been considered as an effective approach to establish a superior scaffold for immobilization of nanoparticles. Herein, we demonstrate a facile and green approach to prepare cobalt oxides (CoO x )-based anode, which is realized by rationally exploiting unique properties of carbonized bacterial cellulose (CBC) and graphene (GN). The unique configuration of GN/CoO x /CBC composite fully enables utilization of the synergistic effects from both three-dimensional nanofibrous network and two-dimensional "flexible confinement" function. Benefiting from their intriguing structural features, the synthesized composite is directly used as electrode for lithium-ion batteries (LIBs), and achieves superior flexibility and reliability, enhanced energy/power density and outstanding cycling stability.

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A high capacity porous Co3O4@graphene composite as lithium battery anode

Cited by 28 publications

References 44 publications

Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Synthesis of Co₃O₄/VG/CNT Composite Microspheres with Excellent Lithium Storage Performance

Interlaced CoO_x Nanosheets Composited with Reduced Graphene Oxide and Carbonized Bacterial Cellulose as Anode Materials for Lithium‐ion Batteries

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A high capacity porous Co3O4@graphene composite as lithium battery anode

Cited by 28 publications

References 44 publications

Graphene Oxide-Wrapped Co3O4/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Graphene Oxide-Wrapped Co3O4/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Synthesis of Co3O4/VG/CNT Composite Microspheres with Excellent Lithium Storage Performance

Interlaced CoOx Nanosheets Composited with Reduced Graphene Oxide and Carbonized Bacterial Cellulose as Anode Materials for Lithium‐ion Batteries

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Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Graphene Oxide-Wrapped Co₃O₄/NiO Micron Flowers as an Anode of Lithium-Ion Batteries with Enhanced Rate Performance and Cycling Stability

Synthesis of Co₃O₄/VG/CNT Composite Microspheres with Excellent Lithium Storage Performance

Interlaced CoO_x Nanosheets Composited with Reduced Graphene Oxide and Carbonized Bacterial Cellulose as Anode Materials for Lithium‐ion Batteries