Regulating V2O5 Layer Spacing by a Polyaniline Molecule Chain to Improve Electrochemical Performance in Salinity Gradient Energy Conversion DOI
Xinyu Liu, Wei‐Bin Zhang,

Xia-Yue Yuan

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(42), P. 22462 - 22476

Published: Oct. 10, 2024

Salinity gradient energy is a chemical potential between two solutions with different ionic concentrations, which also an ocean at the junction of rivers and seas. In our original work, device "activated carbon//(0.083 M Na2SO4, 0.5 Na2SO4)//vanadium pentoxide" for conversion salinity was designed, value 6.29 J g–1 obtained. However, low specific surface area V2O5 inevitably resulted in limited active sites slow transport rates, inherent lower conductivity narrower layer spacing poor electrode kinetic performance cycle stability, hindering its practical application. To solve above problems, present work provides strategy using polyaniline (PANI) molecule chain intercalation to regulate V2O5, through expansion traction spacing, composite PANI/V2O5 (PVO) high prepared used as anode material electrochemical The significantly increased crystal plane (001) corresponding confirmed PANI by hydrogen bonding van der Waals force. more realize fast Na+ migration rate capacitance. Meanwhile, inserted chain, acts not only pillar enlarging diffusion channel but anchor locking gap bilayers, improves structural stability during process. proposed insertion conductive polymer has created new way improve device.

Language: Английский

Regulating V2O5 Layer Spacing by a Polyaniline Molecule Chain to Improve Electrochemical Performance in Salinity Gradient Energy Conversion DOI
Xinyu Liu, Wei‐Bin Zhang,

Xia-Yue Yuan

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(42), P. 22462 - 22476

Published: Oct. 10, 2024

Salinity gradient energy is a chemical potential between two solutions with different ionic concentrations, which also an ocean at the junction of rivers and seas. In our original work, device "activated carbon//(0.083 M Na2SO4, 0.5 Na2SO4)//vanadium pentoxide" for conversion salinity was designed, value 6.29 J g–1 obtained. However, low specific surface area V2O5 inevitably resulted in limited active sites slow transport rates, inherent lower conductivity narrower layer spacing poor electrode kinetic performance cycle stability, hindering its practical application. To solve above problems, present work provides strategy using polyaniline (PANI) molecule chain intercalation to regulate V2O5, through expansion traction spacing, composite PANI/V2O5 (PVO) high prepared used as anode material electrochemical The significantly increased crystal plane (001) corresponding confirmed PANI by hydrogen bonding van der Waals force. more realize fast Na+ migration rate capacitance. Meanwhile, inserted chain, acts not only pillar enlarging diffusion channel but anchor locking gap bilayers, improves structural stability during process. proposed insertion conductive polymer has created new way improve device.

Language: Английский

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