Nitrogen, Fluorine, and Boron Ternary Doped Carbon Fibers as Cathode Electrocatalysts for Zinc–Air Batteries

Wang, Lei; Wang, Yueqing; Wu, Mingguang; Wei, Zengxi; Cui, Chunyu; Mao, Minglei; Zhang, Jintao; Han, Xiaopeng; Liu, Quanhui; Ma, Jianmin

doi:10.1002/smll.201800737

Cited by 165 publications

(89 citation statements)

References 39 publications

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“…Zn(OH) 4 2− ions then precipitate as zinc oxide (ZnO), when they are supersaturated in electrolytes. The liberated electrons flow through the external load to join the ORR on air electrodes (the forward reaction in Equation ), which generate hydroxide (OH − ) ions for the forward reaction shown in Equation . When the Zn–air batteries are charged, the Zn ions present in electrolytes are reduced and deposited on Zn metal electrode surfaces following the backward reactions in Equations and .…”

Section: Fundamentals Of Electrochemically Rechargeable Zn–air Batteriesmentioning

confidence: 99%

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Chen

Zhou

Karahan

et al. 2018

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The century-old zinc-air (Zn-air) battery concept has been revived in the last decade due to its high theoretical energy density, environmental-friendliness, affordability, and safety. Particularly, electrically rechargeable Zn-air battery technologies are of great importance for bulk applications like electric vehicles, grid management, and portable electronic devices. Nevertheless, Zn-air batteries are still not competitive enough to realize widespread practical adoption because of issues in efficiency, durability, and cycle life. Here, following an introduction to the fundamentals and performance testing techniques, the latest research progress related to electrically rechargeable Zn-air batteries is compiled, particularly new key findings in the last five years (2013-2018). The strategies concerning the development of Zn and air electrodes are in focus. The design of other battery components, namely electrolytes and separators are also discussed. Poor performance of O electrocatalysts and the lack of the long-term stability of Zn electrodes and electrolytes remain major challenges. Finally, recommendations regarding the testing routines and materials design are provided. It is hoped that this up-to-date account will help to shape the future research activities toward the development of practical electrically rechargeable Zn-air batteries with extended lifetime and superior performance.

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Section: Fundamentals Of Electrochemically Rechargeable Zn–air Batteriesmentioning

confidence: 99%

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Chen

Zhou

Karahan

et al. 2018

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“…The peaks at 1340 and 1594 cm −1 in 0.5Co‐NC‐CeO 2 justified the existence of the carbon layer in the sample, since they can be identified to the D and G band of carbon. The ratio of D band to G band (I D /I G =1.03) confirmed the presence of the structural defects in the carbon layer assigned to the nitrogen‐bonded sp 2 ‐C and sp 3 ‐C species …”

Section: Resultsmentioning

confidence: 97%

“…Among them, 0.5Co‐NC‐CeO 2 ‐800 °C exhibited the best performance, as shown in Figure S5c. This may be attributed to the proper carbonization temperature, which produced more Ce 3+ content owing to the reductive environment at 800 °C . Thus, 0.5Co and 800 °C were found to be the optimized synthesis parameters for the composite catalyst.…”

Section: Resultsmentioning

confidence: 99%

Complexing‐Coprecipitation Method to Synthesize Catalysts of Cobalt, Nitrogen‐Doped Carbon, and CeO₂ Nanosheets for Highly Efficient Oxygen Reduction

Wang

et al. 2019

ChemNanoMat

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The oxygen reduction reaction (ORR) is the key cathode reaction in renewable‐energy technologies. Developing highly efficient, low‐cost, methanol‐tolerant and durable ORR catalysts is highly needed. In this research, we reported a simple complexing‐coprecipitation method to synthesize CeO2 nanosheets encapsulated by a nitrogen‐doped carbon (NC) layer with uniformly dispersed Co nanoparticles catalysts on the surface. In particular, the 0.5Co‐NC‐CeO2 sample exhibits high ORR catalytic activity with an onset potential of 875 mV (vs. RHE), a diffusion‐limited current density of 4.72 mA/cm2 and a positive half‐wave potential of 817 mV (vs RHE), while 20% Pt/C presents an onset potential of 934 mV (vs. RHE), a diffusion limited current density of 5.8 mA/cm2 and half‐wave potential of 850 mV (vs. RHE). In addition, the catalyst 0.5Co‐NC‐CeO2 also possesses a robust durability, that is the half‐wave potential exhibits a negative shift of only 17 mV after 1000 cycles. The enhanced ORR performance can be attributed to the synergistic effect among Co, the nitrogen‐doped carbon layer and CeO2. The results demonstrated here have implications in designing non‐Pt ORR catalysts.

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“…The typical transmission electron microscope (TEM) images (Figure e and inset) showed the N/S‐HCNs mainly consist of amorphous carbon. The Raman spectrum (Figure f) also revealed the disordered characteristic of the N/S‐HCNs with a broader D band at ≈1352 cm −1 and a G band at ≈1561 cm −1 with a high I d / I g value of 3.53 . The nitrogen adsorption–desorption isotherm of the N/S‐HCNs sample (Figure S4, Supporting Information) showed a type‐IV isotherm and a Brunner–Emmet–Teller (BET) specific surface area of 877 m 2 g −1 , suggesting its capability for anions adsorption.…”

mentioning

confidence: 94%

Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor

Cui

Wang

et al. 2019

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conventional batteries. [8][9][10][11][12] However, it is still a big challenge to develop a hybrid device possessing both energy density comparable to lithium-ion batteries and power density and cycling stability comparable to EDLC.Meanwhile, the ever-growing consumption of lithium resources driven by the fast development of portable electronic devices and electric vehicles will eventually lead to a considerable gap between the demand and lithium-based devices, because that the lithium reserves on the earth are quite limited. [13][14][15][16][17] Alternatively, the sodium-ion based energy storage devices, especially hybrid supercapacitors were considered as promising alternatives to lithium-ion based electrochemical devices due to its abundant storage. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] In the past years, several sodium-ion based hybrid supercapacitors have been developed with different configurations. [33][34][35][36][37][38][39][40][41][42][43][44][45] For example, Yamada and co-workers reported a high-performance sodium-ion capacitor using Ti 2 CT x as anode and Na 2 Fe 2 (SO 4 ) 3 as the cathode, [46] and the device demonstrated high rate capacities of 90 and 40 mAh g −1 at 1.0 and 5.0 A g −1 , respectively, good cycling stability of 96% capacity retention after 100 cycles at 0.6 A g −1 , high energy density of 260 Wh kg −1 at 1.4 kW kg −1 (based on the weight of Ti 2 CT x anode). Yu and co-workers reported a flexible quasi-solid-state sodium-ion capacitor using urchinlike Na 2 Ti 3 O 7 anode, peanut shell derived carbon cathode, and sodium ion conducting gel polymer electrolyte. [47] This SIC exhibited superior electrochemical performance including high energy density of 111.2 Wh kg −1 at 800 W kg −1 (calculated on the total mass of both electrodes), and long cycling stability with 86% capacity retention after 3000 cycles. However, there is still much room to improve the energy densities of sodium-ion capacitors (SICs) to meet with the application requirements.Involving the pseudocapacitance reaction to the EDLC electrode is a possible strategy to further improve the energy density of hybrid supercapacitors because the pseudocapacitance reaction features the abilities to achieve additional capacity than Helmholtz double layer adsorption reaction and meanwhile keep fast reaction kinetics, which has been previously utilized in hybrid capacitors. [48][49][50][51][52][53][54] Herein, we reported a novel SIC based on N and S codoped hollow carbon nanobelts (N/S-HCNs) cathode and tin foil anode in a carbonate Sodium-ion capacitors (SICs) have attracted enormous attention due to their high energy density and high power density. In this work, N and S codoped hollow carbon nanobelts (N/S-HCNs) are synthesized by a self-templated method. The as-synthesized carbon nanobelts exhibit excellent performance in pseudocapacitance and electric double layer anions adsorption. After pairing the N/S-HCNs cathode with a tin foil anode in a carbonate electrolyte, the obtained SIC achieves a high spec...

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Nitrogen, Fluorine, and Boron Ternary Doped Carbon Fibers as Cathode Electrocatalysts for Zinc–Air Batteries

Cited by 165 publications

References 39 publications

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Complexing‐Coprecipitation Method to Synthesize Catalysts of Cobalt, Nitrogen‐Doped Carbon, and CeO₂ Nanosheets for Highly Efficient Oxygen Reduction

Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor

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Nitrogen, Fluorine, and Boron Ternary Doped Carbon Fibers as Cathode Electrocatalysts for Zinc–Air Batteries

Cited by 165 publications

References 39 publications

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Recent Advances in Materials and Design of Electrochemically Rechargeable Zinc–Air Batteries

Complexing‐Coprecipitation Method to Synthesize Catalysts of Cobalt, Nitrogen‐Doped Carbon, and CeO2 Nanosheets for Highly Efficient Oxygen Reduction

Hollow Carbon Nanobelts Codoped with Nitrogen and Sulfur via a Self‐Templated Method for a High‐Performance Sodium‐Ion Capacitor

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About

Complexing‐Coprecipitation Method to Synthesize Catalysts of Cobalt, Nitrogen‐Doped Carbon, and CeO₂ Nanosheets for Highly Efficient Oxygen Reduction