Coupling N-doping and rich oxygen vacancies in mesoporous ZnMn2O4 nanocages toward advanced aqueous zinc ion batteries

Huang, Can; Wang, Qiufan; Zhang, Daohong; Shen, Guozhen

doi:10.1007/s12274-022-4498-9

Cited by 48 publications

(19 citation statements)

References 42 publications

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“…It can be clearly seen that the shape of the CV curve has not changed evidently, indicating that the material has acceptable rate capability . There is a functional relationship between the peak current ( i ) and the scan rate ( v ): i = av b , or it can be converted to log i = log a + b log v , where a and b are adjustable parameters . The b value can be used to analyze the kinetics of the electrochemical reaction.…”

Section: Resultsmentioning

confidence: 99%

Hollow Mn–Co–O@C Yolk–Shell Microspheres with Carbon Shells as Cathodes Derived from a Double-Metal MOF for Aqueous Zinc-Ion Batteries

Yin

Pan

et al. 2023

ACS Sustainable Chem. Eng.

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Manganese-based cathodes are promising candidates for aqueous zinc-ion batteries (AZIBs) due to their high-voltage platform, low-price, environmental friendliness, high theoretical capacity, and non-toxicity. Unfortunately, their application is restricted due to issues such as manganese dissolution, poor electrical conductivity, and poor volume expansion, which lead to unsatisfactory rate performance and fast capacity decay. Hollow Mn–Co–O@C yolk–shell microspheres with carbon shells were fabricated from self-assembled Mn–Co-metal–organic frameworks via combining facile normal temperature and annealing methods. Mn–Co–O@C achieved an excellent specific capacity of 401 mA h g–1 and a capacity retention of 94.7% at 2 A g–1 after 2000 cycles. Its remarkable properties are attributed to the hollow structure with high specific surface areas and the mesoporous structure effectively buffering the large volume change which provide additional storage sites and rapid electron/ion transfer. Cobalt doping decelerates the dissolution of Mn2+, so as to maintain good structural stability and improve the specific capacity due to the multielectron redox reaction of cobalt, as well as the carbon coating with high conductivity and thermal stability which can further inhibit the dissolution of manganese. The results indicate that the Mn–Co–O@C hybrid can be a potential cathode for AZIBs.

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Section: Resultsmentioning

confidence: 99%

Hollow Mn–Co–O@C Yolk–Shell Microspheres with Carbon Shells as Cathodes Derived from a Double-Metal MOF for Aqueous Zinc-Ion Batteries

Yin

Pan

et al. 2023

ACS Sustainable Chem. Eng.

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“…Here, MXene can promote the performances of the solar cell as a charge transport layer [299] and suppress the dendrite formation in batteries [300] as an electrolyte additive [301]. The lithium-ion batteries [302] and zincion batteries [303] can connect with energy production units [304][305][306][307]. The nanogenerators themselves can serve as biosensors Here, a series of water droplets continue falling to and sliding away from the sensor.…”

Section: Pressure Sensors For Touch Sensementioning

confidence: 99%

Applications of MXenes in human-like sensors and actuators

et al. 2022

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Human beings perceive the world through the senses of sight, hearing, smell, taste, touch, space, and balance. The first five senses are prerequisites for people to live. The sensing organs upload information to the nervous systems, including the brain, for interpreting the surrounding environment. Then, the brain sends commands to muscles reflexively to react to stimuli, including light, gas, chemicals, sound, and pressure. MXene, as an emerging two-dimensional material, has been intensively adopted in the applications of various sensors and actuators. In this review, we update the sensors to mimic five primary senses and actuators for stimulating muscles, which employ MXene-based film, membrane, and composite with other functional materials. First, a brief introduction is delivered for the structure, properties, and synthesis methods of MXenes. Then, we feed the readers the recent reports on the MXene-derived image sensors as artificial retinas, gas sensors, chemical biosensors, acoustic devices, and tactile sensors for electronic skin. Besides, the actuators of MXene-based composite are introduced. Eventually, future opportunities are given to MXene research based on the requirements of artificial intelligence and humanoid robot, which may induce prospects in accompanying healthcare and biomedical engineering applications.

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“…[4][5][6][7] Considerable progress has been made in the study of cathodes for RAZBs. [8][9][10][11][12] The standing challenge resides in the low coulombic efficiency and dendrite growth of the Zn-metal anode. [13][14][15][16][17] By far, the strategies for dendrite suppression and reversibility enhancement include host structural design, surface modication, and electrolyte optimization, which are highly effective upon a limited discharge depth of Zn.…”

Section: Introductionmentioning

confidence: 99%

Practical conversion-type titanium telluride anodes for high-capacity long-lifespan rechargeable aqueous zinc batteries

Zhang

Kang

et al. 2022

J. Mater. Chem. A

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Coupling N-doping and rich oxygen vacancies in mesoporous ZnMn2O4 nanocages toward advanced aqueous zinc ion batteries

Cited by 48 publications

References 42 publications

Hollow Mn–Co–O@C Yolk–Shell Microspheres with Carbon Shells as Cathodes Derived from a Double-Metal MOF for Aqueous Zinc-Ion Batteries

Hollow Mn–Co–O@C Yolk–Shell Microspheres with Carbon Shells as Cathodes Derived from a Double-Metal MOF for Aqueous Zinc-Ion Batteries

Applications of MXenes in human-like sensors and actuators

Practical conversion-type titanium telluride anodes for high-capacity long-lifespan rechargeable aqueous zinc batteries

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