Co3O4–CeO2/C as a Highly Active Electrocatalyst for Oxygen Reduction Reaction in Al–Air Batteries

Liu, Kun; Huang, Xiaobing; Wang, Haiyan; Li, Fuzhi; Tang, Yougen; Li, Jingsha; Shao, Minhua

doi:10.1021/acsami.6b12294

Cited by 167 publications

(135 citation statements)

References 66 publications

Supporting

Mentioning

131

Contrasting

Order By: Relevance

“…The curves inserted in Figure 6c exhibits the Koutechy-Levich (K-L) plots obtained from these LSV curves from 400 to 1600 rpm. The K-L plots are almost parallel with each other, suggesting similar electron transfer numbers for ORR at various potentials [40]. The electron transferred numbers (n) are further calculated from the slope of the K-L plots.…”

Section: Orr Catalytic Activitiesmentioning

confidence: 68%

See 1 more Smart Citation

Efficiently Enhancing Electrocatalytic Activity of α-MnO2 Nanorods/N-Doped Ketjenblack Carbon for Oxygen Reduction Reaction and Oxygen Evolution Reaction Using Facile Regulated Hydrothermal Treatment

Wang

Chen

et al. 2018

Catalysts

Self Cite

View full text Add to dashboard Cite

Scalable, low-cost and highly efficient catalysis of oxygen electrocatalytic reactions (ORR/OER) are required for the rapid development of clean and renewable energy conversion/storage technologies. Herein, two types of α-MnO 2 nanorods were prepared under hydrothermal treatment at 150 • C for 0.5 h (MnO 2 -150-0.5) or 120 • C for 12 h (MnO 2 -120-12), then supported on N-doped ketjenblack carbon (N-KB) as bi-functional ORR/OER catalysts. Their electrocatalytic activities toward ORR and OER were investigated systematically. As a result, MnO 2 -150-0.5/N-KB displays superior ORR catalytic activity, with much more positive half-wave potential and much larger limiting current density (0.76 V and 6.0 mA cm −2 ), comparable to those of 20 wt. % Pt/C (0.82 V and 5.10 mA cm −2 ). MnO 2 -150-0.5/N-KB also shows high electron transfer number (3.86~3.97) and low yield of peroxides (1-7%) during ORR process in the whole potential range of 0-1.0 V (vs. RHE). Meanwhile, the MnO 2 -150-0.5/N-KB also exhibits better OER activity with low overpotential, comparable to IrO 2 /N-KB. The excellent electrocatalytic activity of MnO 2 -150-0.5/N-KB can be attributed to the synergistic effect, relatively smaller size, higher amount of Mn 3+ , and low charge transfer resistance. This work offers a new strategy for scalable preparation of more efficient and cost-effective α-MnO 2 bi-functional oxygen catalysts.

show abstract

Section: Orr Catalytic Activitiesmentioning

confidence: 68%

“…The electron transferred numbers (n) are further calculated from the slope of the K-L plots. The n is around 3.95, which suggests MnO 2 -150-0.5/N-KB favors a 4e transfer oxygen reduction mechanism [39,40].…”

Section: Orr Catalytic Activitiesmentioning

confidence: 94%

Efficiently Enhancing Electrocatalytic Activity of α-MnO2 Nanorods/N-Doped Ketjenblack Carbon for Oxygen Reduction Reaction and Oxygen Evolution Reaction Using Facile Regulated Hydrothermal Treatment

Wang

Chen

et al. 2018

Catalysts

Self Cite

View full text Add to dashboard Cite

show abstract

“…In view of the electronic interaction effect, modification of transition metal‐based catalysts with foreign promoters should be a reliable strategy to regulate their electrocatalytic performance 33–37. Recently, rare earth oxides (REO) have attracted special interest as the foreign promoters to modulate the electrocatalytic properties of various transition metals33,38–42 owing to their unique electronic and chemical properties of 4f subshell electrons 43,44. As demonstrated by Shao and co‐workers,39 the ORR activity of Co 3 O 4 /ketjenblack could be significantly improved by doping with CeO 2 REO.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, rare earth oxides (REO) have attracted special interest as the foreign promoters to modulate the electrocatalytic properties of various transition metals33,38–42 owing to their unique electronic and chemical properties of 4f subshell electrons 43,44. As demonstrated by Shao and co‐workers,39 the ORR activity of Co 3 O 4 /ketjenblack could be significantly improved by doping with CeO 2 REO. The rich oxygen vacancies of CeO 2 and swift transition between Ce 3+ and Ce 4+ would be conducive to facilitate O 2 adsorption 40.…”

Section: Introductionmentioning

confidence: 99%

Gadolinium‐Induced Valence Structure Engineering for Enhanced Oxygen Electrocatalysis

Wang

Yang

et al. 2020

Advanced Energy Materials

135

View full text Add to dashboard Cite

Rare earth doped materials with unique electronic ground state configurations are considered emerging alternatives to conventional Pt/C for the oxygen reduction reaction (ORR). Herein, gadolinium (Gd)‐induced valence structure engineering is, for the first, time investigated for enhanced oxygen electrocatalysis. The Gd2O3–Co heterostructure loaded on N‐doped graphene (Gd2O3–Co/NG) is constructed as the target catalyst via a facile sol–gel assisted strategy. This synthetic strategy allows Gd2O3–Co nanoparticles to distribute uniformly on an N‐graphene surface and form intimate Gd2O3/Co interface sites. Upon the introduction of Gd2O3, the ORR activity of Gd2O3–Co/NG is significantly increased compared with Co/NG, where the half‐wave potential (E1/2) of Gd2O3–Co/NG is 100 mV more positive than that of Co/NG and even close to commercial Pt/C. The density functional theory calculation and spectroscopic analysis demonstrate that, owing to intrinsic charge redistribution at the engineered interface of Gd2O3/Co, the coupled Gd2O3–Co can break the OOH*–OH* scaling relation and result in a good balance of OOH* and OH* binding on Gd2O3–Co surface. For practical application, a rechargeable Zn–air battery employing Gd2O3–Co/NG as an air–cathode achieves a large power density and excellent charge–discharge cycle stability.

show abstract

“…[120,[132][133][134] For the electrolyte part, some additives like cationic surfactant, (In(OH) 4 À ), (SnO 3 2À ), zinc oxide and plant extracts have been proposed to suppress the evolution of hydrogen, corrosion and dissolution of Al metal electrode, leading to better performance. [119][120]138] To replace the expensive rare catalyst, some cheap composites, such as Fe 3 O 4 , [139] Co 3 O 4 , [140][141] LaMnO 3 , [142] MnCo 2 O 4 , [143][144] MnO x , [145][146][147] FeÀ CÀ N, [148] CoOÀ CÀ N, [149][150] perovskites, [119,142] and so on [151] have been investigated. [119][120]138] To replace the expensive rare catalyst, some cheap composites, such as Fe 3 O 4 , [139] Co 3 O 4 , [140][141] LaMnO 3 , [142] MnCo 2 O 4 , [143][144] MnO x , [145][146][147] FeÀ CÀ N, [148] CoOÀ CÀ N, [149][150] perovskites, [119,142] and so on [151] have been investigated.…”

Section: Aqueous Aluminum Air Batteriesmentioning

confidence: 99%

Recent Progress and Future Trends of Aluminum Batteries

Sun

Luo

et al. 2018

Energy Tech

View full text Add to dashboard Cite

As one of the most promising alternatives to next‐generation energy storage systems, aluminum batteries (ABs) have been attracting rapidly increasing attention over the past few years. In this review, we summarize the recent advancements of ABs based on both aqueous and non‐aqueous electrolytes, with a particular focus on rechargeable non‐aqueous ionic liquid‐based aluminum‐ion batteries (AIBs). Progress of the current intensive investigation on the development of cathode materials and electrolytes in non‐aqueous AIBs are discussed. Then research efforts towards aqueous ABs are described to give readers a broader view of the aluminum battery family. Finally, the review summaries the key challenges underpinning ABs and provides future research perspectives on this growing field.

show abstract

Co₃O₄–CeO₂/C as a Highly Active Electrocatalyst for Oxygen Reduction Reaction in Al–Air Batteries

Cited by 167 publications

References 66 publications

Efficiently Enhancing Electrocatalytic Activity of α-MnO2 Nanorods/N-Doped Ketjenblack Carbon for Oxygen Reduction Reaction and Oxygen Evolution Reaction Using Facile Regulated Hydrothermal Treatment

Efficiently Enhancing Electrocatalytic Activity of α-MnO2 Nanorods/N-Doped Ketjenblack Carbon for Oxygen Reduction Reaction and Oxygen Evolution Reaction Using Facile Regulated Hydrothermal Treatment

Gadolinium‐Induced Valence Structure Engineering for Enhanced Oxygen Electrocatalysis

Recent Progress and Future Trends of Aluminum Batteries

Contact Info

Product

Resources

About