Prevention of side reactions with a unique carbon-free catalyst biosynthesized by a virus template for non-aqueous and quasi-solid-state Li–O2 batteries

Pakseresht, Sara; Al-Ogaili, Ahmed Waleed Majeed; Çetinkaya, Tuğrul; Çeli̇k, Mustafa Yavuz; Akbulut, Hatem

doi:10.1016/j.jpowsour.2021.230374

Cited by 11 publications

(8 citation statements)

References 60 publications

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“…C element decreased and O element increased after calcination (Table S1), and the mole ratio of Mn to Fe was about 2:1, which is in line with the experimental design. For O element (Figure d), before calcination, a peak at 531.57 eV and a peak at 533.08 eV appeared, which can be attributed to surface active oxygen (O β –OH – ) and C–O, respectively. − After calcination, a peak of lattice oxygen (O α ) appeared at 528.8 eV, mainly resulting from Fe 2 O 3 , FeO, MnO 2 , and Fe 3 O 4 . , The peak of O β –OH – decreased, and the peak of adsorbed oxygen (O β –O 2– ) appeared at 530 eV. , O β –O 2– is a weak bond of surface oxygen species and has low coordination properties, so it has high mobility at low temperature, which is conducive to electron transport and enhanced catalytic activity. For Mn element (Figure e), there were mainly Mn 2+ , Mn 3+ , and Mn 4+ , and the peak of the Mn satellite appeared before calcination but disappeared after calcination.…”

Section: Resultsmentioning

confidence: 99%

“…55,56 The peak of O β −OH − decreased, and the peak of adsorbed oxygen (O β − O 2− ) appeared at 530 eV. 52,54 O β −O 2− is a weak bond of surface oxygen species and has low coordination properties, so it has high mobility at low temperature, which is conducive to electron transport and enhanced catalytic activity. For Mn element (Figure 3e), there were mainly Mn 2+ , Mn 3+ , and Mn 4+ , and the peak of the Mn satellite appeared before calcination but disappeared after calcination.…”

Section: Structural Analysis and De-no X Performancementioning

confidence: 99%

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Rational Regulation of Reducibility and Acid Site on Mn–Fe–BTC to Achieve High Low-Temperature Catalytic Denitration Performance

Song

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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Selective catalytic reduction with ammonia is the mainstream technology of flue gas denitration (de-NO x ). The reducibility and acid site are two important factors affecting the de-NO x performance, and effective regulation between them is the key to obtain a highly efficient de-NO x catalyst. Herein, a series of Mn−Fe−BTC with different ratios of Mn and Fe are synthesized, among which 2Mn-1Fe-BTC with 2:1 molar ratio of Mn and Fe has excellent low-temperature (LT) de-NO x performance (above 90% NO conversion between 60 and 270 °C) and good tolerance to H 2 O and SO 2 poisoning (88% NO conversion at 150 °C with 100 ppm of SO 2 and/or 6% H 2 O). It is revealed that the reducibility properties and acid sites of Mn−Fe− BTC can be flexibly tuned by the ratio of Mn and Fe. The difference in electronegativity between Fe and Mn leads to the redistribution of valence electrons, which enables the controllable reducibility of Mn−Fe−BTC. Furthermore, different amounts of Mn and Fe lead to different electron transport, which determines the type and number of acid sites. The synergistic effect of Mn and Fe endows Mn−Fe−BTC with enhanced surface molecular adsorption capacity and enables the catalyst to selectively chemisorb NH 3 and NO at different active sites. This research provides guidance for the flexible regulation of reducibility and acid site of LT de-NO x catalyst.

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Section: Resultsmentioning

confidence: 99%

Section: Structural Analysis and De-no X Performancementioning

confidence: 99%

Rational Regulation of Reducibility and Acid Site on Mn–Fe–BTC to Achieve High Low-Temperature Catalytic Denitration Performance

Song

Guo

et al. 2023

ACS Appl. Mater. Interfaces

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“…For the Vs-NiCo 2 S 4 electrode, the peak at 609 cm –1 belonging to the Li–O stretching vibration of Li 2 O 2 appears after discharging and disappears after recharging. Unfortunately, for the NiCo 2 S 4 electrode, the peak at 887.0 cm –1 corresponding to the OC–O stretching vibration of Li 2 CO 3 , the peak at 1069.1 cm –1 attributed to the C–O stretching vibration of CH 3 COOLi, and the peaks at 1387.6 and 1605.6 cm –1 assigned to C–O and CO stretching vibrations of HCOOLi still exist after recharging. , Carbonate and carboxylate byproducts accumulating on the electrode surface can gradually lead to the loss of active sites and aggravate durability of electrodes. The above results confirm that Vs-NiCo 2 S 4 possesses satisfying advantages on enhancing ORR/OER reversibility and suppressing parasitic reactions induced by electrolyte decomposition at a high charging overpotential.…”

Section: Results and Discussionmentioning

confidence: 99%

Spin-State Regulation of Nickel Cobalt Spinel toward Enhancing the Electron Transfer Process of Oxygen Redox Reactions in Lithium–Oxygen Batteries

Wen

Ren

et al. 2022

Energy Fuels

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The development of a high-energy-density lithium− oxygen (Li−O 2 ) battery is mainly determined by highly efficient electrocatalysts with excellent activity and stability, facilitating reversible oxygen redox reactions. Engineering the electron spin state provides a novel strategy to enhance the electrocatalytic activity of electrode materials. In this work, sulfur vacancy-enriched spinel NiCo 2 S 4 (Vs-NiCo 2 S 4 ) with high spin polarization is designed as an effective electrocatalyst for high-performance Li− O 2 batteries. Subtle lattice distortion is induced by sulfur vacancy in spinel Vs-NiCo 2 S 4 , which strongly contributes to the formation of high spin states of Co 3+ (HS, t 2g 4 e g 2 ) from the low spin states of Co 3+ (LS, t 2g 6 e g 0 ) at active octahedral sites. The electron transitions of Co 3+ from low to high spin enable the increase of the spin polarization and produce abundant unpaired electrons in the 3d orbital of Co 3+ , enhancing the adsorption of oxygen intermediates and boosting the electron transfer process of oxygen redox reactions. Density functional theory calculations indicate that the spin magnetic moment of Co 3+ in Vs-NiCo 2 S 4 is raised in comparison to that in NiCo 2 S 4 , which improves the catalytic activity of the material via lowering the energy barrier for electron transfer. Experimentally, Vs-NiCo 2 S 4 -based Li−O 2 batteries exhibit a large specific capacity of 8707.0 mAh g −1 and long cycling life of 487 h. Furthermore, in situ differential electrochemical mass spectrometry results show that the ratio of electron to oxygen during oxygen redox reactions is close to 2, demonstrating the favorable formation and decomposition of Li 2 O 2 on Vs-NiCo 2 S 4 in a Li−O 2 battery. This work presents a powerful strategy to rationally design efficient electrocatalysts via spin engineering to boost oxygen redox reaction kinetics in Li−O 2 batteries.

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“…The genetic material can be DNA or RNA, whose genetic structures vary from single‐stranded, double‐stranded, and circular. Filamentous M13 virus is the most commonly utilized filovirus in energy storage materials [ 154 ] with the length of 880 nm, diameter of 6 nm, specific surface area of 18 700 nm 2 , and molecular weight of 1.9 × 10 7 Da, which can only infect the E. coli strain containing F + hairs. [ 109 ] Different from the other virulent phages, M13 virus would self‐assemble on the surface of the E. coli membrane and then release to the culture medium during the noncracking infection (≈15 min), which inducing the decrease of the growth rate rather than death or dissolution of the host bacteria.…”

Section: Genetic Manipulation Technology For Synthesis Of Bc‐based Ma...mentioning

confidence: 99%

Microbe‐Mediated Biosynthesis of Multidimensional Carbon‐Based Materials for Energy Storage Applications

Shen

Chen

Zhou

et al. 2023

Advanced Energy Materials

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Biosynthesis methods are considered to be a promising technology for engineering new carbon‐based materials or redesigning the existing ones for specific purposes with the aid of synthetic biology. Lots of biosynthetic processes including metabolism, fermentation, biological mineralization, and gene editing have been adopted to prepare novel carbon‐based materials with exceptional properties that cannot be realized by traditional chemical methods, because microbes evolved to possess special abilities to modulate components/structure of materials. In this review, the recent development on carbon‐based materials prepared via different biosynthesis methods and various microbe factories (such as bacteria, yeasts, fungus, viruses, proteins) are systematically reviewed. The types of biotechniques and the corresponding mechanisms for the synthesis of carbon‐based materials are outlined. This review also focuses on the structural design and compositional engineering of carbon‐based nanostructures (e.g., metals, semiconductors, metal oxides, metal sulfides, phosphates, Mxenes) derived from biotechnology and their applications in electrochemical energy storage devices. Moreover, the relationship of the architecture–composition–electrochemical behavior and performance enhancement mechanism is also deeply discussed and analyzed. Finally, the development perspectives and challenges on the biosynthetic carbons are proposed and may pave a new avenue for rational design of advanced materials for the low‐carbon economy.

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Prevention of side reactions with a unique carbon-free catalyst biosynthesized by a virus template for non-aqueous and quasi-solid-state Li–O2 batteries

Cited by 11 publications

References 60 publications

Rational Regulation of Reducibility and Acid Site on Mn–Fe–BTC to Achieve High Low-Temperature Catalytic Denitration Performance

Rational Regulation of Reducibility and Acid Site on Mn–Fe–BTC to Achieve High Low-Temperature Catalytic Denitration Performance

Spin-State Regulation of Nickel Cobalt Spinel toward Enhancing the Electron Transfer Process of Oxygen Redox Reactions in Lithium–Oxygen Batteries

Microbe‐Mediated Biosynthesis of Multidimensional Carbon‐Based Materials for Energy Storage Applications

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