Iron-Catalyzed Aerobic Oxidative Cross-Dehydrogenative C(sp3)–H/X–H (X = C, N, S) Coupling Reactions

Hu, Ren‐Ming; Lai, Yihuan; Xu, Da‐Zhen

doi:10.1055/s-0040-1707195

Cited by 48 publications

(57 citation statements)

References 9 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The intercalation capacity of Zn@C is not high, as evidenced by the broad reduction peak in CV curves (Figure 5b), which is a typical characteristic of capacitive processes. [ 57 ] Therefore, restraining the capacitive process by increasing the graphitization degree of CO 2 ‐derived carbon is one way to further enhance the aluminum storage of Zn@C. It is acknowledged that the graphitization of the CO 2 ‐derived carbon herein needs to be further increased. The strategy on tailoring the microstructure of the derived carbon during electrochemical reduction of CO 2 in molten salts have been well addressed, [ 6 ] with higher graphitization of carbon occurring in the presence of liquid metal (the herein protocol), sulfur oxides, [ 18,59 ] elevated temperature, [ 58,59 ] higher overpotential, and metallic catalysts [ 8,58 ] Another way to further improve the capacity is to optimize the content of Zn in Zn@C. As shown in Figure 5c and Figure S9b in the Supporting Information, the “Zn@C (6.4 wt% Zn)” possesses much higher capacity than “Zn@C (25 wt% Zn),” revealing that optimizing the Zn content is an effective way to further enhance the energy storage ability of CO 2 ‐derived carbon.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Xiao

Weng

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

to epoxides is realized in ionic liquids by Sun and co-workers. [14,15] Fixation and utilization of CO 2 is also elaborately explored via designing the metal-CO 2 batteries by Ding and co-workers. [16] Fixation of CO 2 into functional carbonaceous materials by capture and electrochemical reduction of CO 2 in molten salts has many advantages. [6,17-19] CO 2 shows a high solubility in molten salts, guaranteeing a highflux uptake rate for a direct and deep removal of CO 2 from atmosphere and industrial flue gas. [6] The wide electrochemical window of molten salt electrolytes promises a high current efficiency of the electrochemical reduction of CO 2 in molten salts. [6,20-24] The high-temperature environment of inorganic molten salts brings about enhanced mass transfer and facilitated reaction kinetics, enabling an appealing conversion rate of CO 2 free of any precious catalysts. [6,14,15] Molten salts possess a high heat capacity, which means the heat required by the molten salt fixation of CO 2 can be supplied by solar-thermal systems. [17] The decomposition voltage of CO 2-capture-generated CO 3 2− in molten salts is lower than 2.0 V (1.3 V for Li 2 CO 3 , 1.6 V for Na 2 CO 3 , and 1.8 V for K 2 CO 3 at 500 °C), therefore the electricity for the conversion of CO 2 in molten salts can be supplied by solar photovoltaic systems. [17] Finally, oxygen in CO 2 can simultaneously be released as anodic O 2 , which is of prime implications on future colony on Mars. [6] One of the major challenges for the electrochemical fixation of CO 2 in molten salts is the insufficient functionality of the deposited carbon on cathode. [6] Amorphous and disordered carbon is commonly obtained by electrochemical conversion of CO 2 in molten salts, which contradicts with the demands of application devices for carbonaceous materials with high graphitization degree. [6] For example, aluminum-ion (Al-ion) battery (AIB) possesses the merits of low cost, high volumetric capacity, and high safety. Many cathode materials are reported for Al-ion batteries, including carbon-based materials, metal sulfides, and V 2 O 5. [25-27] For carbon-based materials, the carbon with higher graphitization degree commonly possesses better performance for reversible Al storage. [26,27] In this regard, pioneering works were conducted by Lu and coworkers. [7,28-33] In their strategy, a highly porous 3D graphene foam is used as the cathode for rechargeable Al-ion batteries,

show abstract

Section: Resultsmentioning

confidence: 99%

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Xiao

Weng

et al. 2020

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…As the scan rate increases, the capacitive contribution increases and finally reaches to about 76.2 % at a scan rate of 10 mV s −1 , which is higher than that (72.0 %) of the PANI@SWCNT‐based cells (Figure c,d and Supporting Information, Figure S26). It is noted that capacitive charge storage enables a high cathode capacity . Furthermore, PANI(H + )@SWCNT electrodes still exhibit low ion energy barriers and fast kinetic conversion of PANI(H + ) even at long‐term cycles (Figure e and Supporting Information, Figure S27).…”

Section: Figurementioning

confidence: 97%

Engineering Active Sites of Polyaniline for AlCl₂⁺ Storage in an Aluminum‐Ion Battery

et al. 2020

View full text Add to dashboard Cite

The reversible capacity of AlCl4− intercalation/de‐intercalation in conventional cathodes of aluminum‐ion batteries (AIBs) is difficult to improve due to the large size of AlCl4− anions. Therefore, it is highly desirable to realize the intercalation/de‐intercalation of smaller Al‐based ions. Here, we fabricated polyaniline/single‐walled carbon nanotubes (PANI/SWCNTs) composite films and protonated the PANI nanorods. The protonation endows PANI with more active sites and enhanced conductivity. Hyper self‐protonated PANI (PANI(H+)) exhibits reversible AlCl2+ intercalation/de‐intercalation during the discharge/charge process. As a result, the discharge capacity of the Al/PANI(H+) battery is twice as high as that of the initial composite films. PANI(H+)@SWCNT electrodes also have a stable cycling life with only 0.003 % capacity decay per cycle over 8000 cycles. Owing to the excellent mechanical properties, PANI(H+)@SWCNT composite films can act as the electrodes of flexible AIBs.

show abstract

“…[211] 2) 1D materials, such as carbon nanotube, [212] have only one dimension outside of the nanometric size range. 3) 2D materials have two dimensions outside of the nanometric size range, with the typical examples being graphene [213] and nanosheets. [214] Many LD materials exhibit very peculiar physical phenomena due to the specificity of the crystal structure.…”

Section: Low-dimensional Materialsmentioning

confidence: 99%

Rechargeable Batteries: Regulating Electronic and Ionic Transports for High Electrochemical Performance

Zhao

Hui

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

Rechargeable batteries are serving society and are continuing to develop according to application requirements. Recently, rechargeable batteries with high energy density, power density, stability, and rate performance, as well as low cost have attracted the attention of researchers globally. However, achieving all these merits in a single rechargeable battery system is difficult. Accordingly, many approaches are reported to improve the performance of different energy storage devices. Nevertheless, reports on a general research method to improve the performance of battery systems are still limited. Herein, the current progress of rechargeable batteries and the corresponding opportunities and challenges are summarized. The principles of electrochemical reactions for lead–acid batteries, metal–ion batteries, metal–sulfur batteries, and metal–air batteries are introduced and compared. The technological challenges in the development of rechargeable batteries on the basis of transports of electrons and ions are comprehensively analyzed. In particular, approaches for regulating electronic and ionic transports are comprehensively discussed for the enhancement of electrochemical performance. Some advanced energy storage materials with good electronic and ionic conductivities are also highlighted. Furthermore, several perspectives on potential research directions for the choice and design of high‐performance rechargeable batteries for practical application are proposed.

show abstract

Iron-Catalyzed Aerobic Oxidative Cross-Dehydrogenative C(sp3)–H/X–H (X = C, N, S) Coupling Reactions

Cited by 48 publications

References 9 publications

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Engineering Active Sites of Polyaniline for AlCl₂⁺ Storage in an Aluminum‐Ion Battery

Rechargeable Batteries: Regulating Electronic and Ionic Transports for High Electrochemical Performance

Contact Info

Product

Resources

About

Iron-Catalyzed Aerobic Oxidative Cross-Dehydrogenative C(sp3)–H/X–H (X = C, N, S) Coupling Reactions

Cited by 48 publications

References 9 publications

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Electrochemical Fixation of Carbon Dioxide in Molten Salts on Liquid Zinc Cathode to Zinc@Graphitic Carbon Spheres for Enhanced Energy Storage

Engineering Active Sites of Polyaniline for AlCl2+ Storage in an Aluminum‐Ion Battery

Rechargeable Batteries: Regulating Electronic and Ionic Transports for High Electrochemical Performance

Contact Info

Product

Resources

About

Engineering Active Sites of Polyaniline for AlCl₂⁺ Storage in an Aluminum‐Ion Battery