Earth-abundant coal-derived carbon nanotube/carbon composites as efficient bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries

Lu, Zhenjie; Yao, Shuchun; Dong, Yanzeng; Wu, Dongling; Pan, Haoran; Huang, Xinning; Wang, Tao; Sun, Zhenyu; Chen, Xingxing

doi:10.1016/j.jechem.2020.07.040

Cited by 39 publications

(9 citation statements)

References 75 publications

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“…As shown in Figure S21c, the larger integral area of CC/C–C in Co 3 O 4 @N/CNT-1000 indicates higher content of sp 2 carbon that may benefit faster electron transfer . From the O 1s spectra (Figure S21d), three peaks were obtained, related to CO (529.5 eV), Co–O (528.3 eV) and C–O–H (526.1 eV), respectively …”

Section: Resultsmentioning

confidence: 93%

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Yang,

Ge,

et al. 2023

Inorg. Chem.

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Zinc–air batteries (ZABs) have been considered as one of the most emerging systems for energy conversion and storage. However, the preparation of highly efficient oxygen reduction reaction (ORR) catalysts on an air cathode is still faced with significant challenges. Herein, we report a secondary nitrogen source strategy for fine-tuning the active center, which provides a carbon-based hierarchical porous catalyst (termed Co3O4@N/CNT-1000) for highly efficient ORR activity (E 1/2 = 0.87 V, J L = 5.32 mA cm–2, and E onset = 1.021 V) and excellent stability. Controlled experiments demonstrate that such high activity derives from the synergistic effect of cobalt tetroxide and bamboo-shaped carbon nanotubes doped with nitrogen, prepared by the pyrolysis of a two-dimensional metal–organic framework nanosheet (termed NTU-70) and melamine. Furthermore, the ZAB assembled with Co3O4@N/CNT-1000 displays high specific capacity (854 mA h g–1 Zn) and power density (179 mW cm–2), excellent long-term cycling (330 h), and durable charging/discharging ability.

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Section: Resultsmentioning

confidence: 93%

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Yang,

Ge,

et al. 2023

Inorg. Chem.

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“…Besides, the RRDE test was performed in an O 2 -saturated 0.1 M KOH solution with a starting potential of 0.1 V and a termination potential of −1 V, and the sweep rate was 5 mV s –1 . The electron transfer number ( n ) obtained by the Koutecky–Levich (K–L) formula: 0.25em j − 1 = j normalL − 1 + j normalK − 1 = B − 1 + ω − 1 / 2 + j normalK − 1 B = 0.2 n F C 0 false( D 0 false) 2 / 3 υ − 1 / 6 j normalK = n F k C 0 Here, j K is the kinetic current density, j represents the measured current density, j L means the diffusion limiting current density, C 0 is the concentration of oxygen in the electrolyte (1.2 × 10 –3 mol L –1 ), k is the electron conversion rate constant 0.01 cm 2 s –1 , υ is the kinetic viscosity (0.01 cm 2 s –1 ), D 0 is the oxygen diffusion coefficient (1.9 × 10 –5 cm 2 s –1 ), F is the Faraday constant (96,485 C mol –1 ), n is the transfer electron number, and N is the collection efficiency of Pt rings (0.37).…”

Section: Methodsmentioning

confidence: 99%

“…The number of electron transfer and HO 2– yield in the ORR process can be calculated according to the test data of the rotating ring disk electrode: n = 4 × I normald I normald + I normalr / N HO 2 − % = 200 × I normalr / N I normald + I normalr / N Here, I r and I d represent the ring and disk current, respectively.…”

Section: Methodsmentioning

confidence: 99%

Use of Fe-H₃BTC and GO Compounds To Prepare N/Fe-Doped Carbon for a High-Performance Oxygen Reduction Reaction Catalyst

Wang

Liu

et al. 2023

Langmuir

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Zinc–air batteries (ZABs), as a new type of energy storage and conversion device, have received lots of attention due to their high energy density and low cost. The electrode material is a key factor for improving the performance of ZABs. Here, a facile strategy for the fabrication of N-rich porous carbon is reported. H3BTC and GO are selected as carbon precursors, histidine and Fe(NO3)3 are used as ligands, and urea is used as a N source and template. After the conventional drying of the complex and following carbonization process, serial N-doped carbon materials are prepared. The composition and structure of the material are characterized, and the effect of the ligand is studied. The hierarchical porous structure facilitates the full exposition of N and trace of Fe active sites and benefits the transportation of electrolytes, thus improving the oxygen reduction reaction (ORR). The ORR performances show that the porous carbon has a positive initial and half-wave potential, good limiting current density, a near four-electron transfer process, and better methanol resistance and durability. The assembled ZAB exhibits high specific capacity (880.4 mAh gZn –1), excellent open-circuit voltage (1.54 V), and superior cycling stability, which further provides the significant potential for its application.

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“…Using CTP as the carbon source, Co@carbon was obtained as the cathodic electrode catalyst, which showed long cycling stability for more than 250 h at 10 mA cm –2 as shown in Figure d–f . Further introducing the CNTs into the composites, the as-resulted samples delivered an initial discharge/charge voltage gap of 0.73 V, maintaining a voltage-type efficiency of 61.2% after 160 cycles, with capability for powering a light-emitting diode lamp for at least 80 h On the other hand, trace elements from coal (N, S) and other metallic species may be incorporated into the carbon composites, further forming M, N, and S/C groups (M = metal), thus facilitating the oxygen reaction. In addition, the coexistence of Co, Mn, Ni, and their oxides can enhance the electrocatalytic performance through the synergistic effect, which is related to their unique chemical and electronic properties.…”

Section: Zinc Batteriesmentioning

confidence: 99%

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

Chen

Zeng

et al. 2022

ACS Appl. Energy Mater.

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Compared to the traditional chemical process, the direct application of natural minerals has captured numerous attention because of a series of merits, such as low cost, rich resources, and so forth. Fascinated by the considerable chemical properties and interlayer distances, carbon materials have been widely applied in energy storage systems (ESSs). As the richest mineral, coal is always used as the fuel, accompanying with inferior values. Fascinatingly, significant carbon materials with different internal structures and morphologies could be prepared using coal and coal tar pitch (CTP), triggering plenty of research activities on "short-process" application of coal-based materials. Interestingly, based on the rank of coal, it could be divided into lignite, anthracite, and bituminous, which exhibited different energy storage functions. Moreover, the existence of trace metal elements enables it to be designed as catalysts. The use of coal-based materials in alkali ion batteries (lithium-/sodium-/potassium-ion batteries), Zn−air batteries, and supercapacitors is reviewed herein. The relative applications of various kinds of precursors (coal powder, CTP, and coal) in ESSs are summarized in detail, and the limitations of coal-based materials are further discussed in depth. This review is expected to offer insights about their developments in future, while shedding light on the challenges in using coal-based electrodes and their solutions.

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Earth-abundant coal-derived carbon nanotube/carbon composites as efficient bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries

Cited by 39 publications

References 75 publications

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Use of Fe-H₃BTC and GO Compounds To Prepare N/Fe-Doped Carbon for a High-Performance Oxygen Reduction Reaction Catalyst

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

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Earth-abundant coal-derived carbon nanotube/carbon composites as efficient bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries

Cited by 39 publications

References 75 publications

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Synergistic Catalysis of Cobalt Tetroxide and Bamboo-Shaped Carbon Nanotubes Doped with Nitrogen for Oxygen Reduction in Zn–Air Batteries

Use of Fe-H3BTC and GO Compounds To Prepare N/Fe-Doped Carbon for a High-Performance Oxygen Reduction Reaction Catalyst

Coal-Based Electrodes for Energy Storage Systems: Development, Challenges, and Prospects

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Product

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Use of Fe-H₃BTC and GO Compounds To Prepare N/Fe-Doped Carbon for a High-Performance Oxygen Reduction Reaction Catalyst