In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo2Ti2C3Tx MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

Dayakar Gandla; Yun’an Zhou; Yihao Yan; Yifan Niu; Fuming Zhang; Daniel Q. Tan

doi:10.1021/acsaem.4c00438

In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo₂Ti₂C₃T_x MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

Dayakar Gandla^*, Yun’an Zhou, Yihao Yan, Yifan Niu, Fuming Zhang, Daniel Q. Tan^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo₂Ti₂C₃T_x MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo₂Ti₂C₃T_x MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g^-1 at 5 mA cm^-2, exceptional capacity retention of 94% after 5000 charge-discharge cycles at 50 mA cm^-2, and a high gravimetric energy density of 52.5 W h kg^-1 at a power density of 1442 W kg^-1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology.

Original language	English
Journal	ACS Applied Energy Materials
DOIs	https://doi.org/10.1021/acsaem.4c00438
State	Accepted/In press - 2024

Keywords

Mo and Ti-dual oxide nanoparticles
MoTiCT MXene
double transition metal MXenes
energy storage
lewis acid molten salt method

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10.1021/acsaem.4c00438

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@article{c0c8cf8aef164c3e86a03edcf6b70bf2,

title = "In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo2Ti2C3Tx MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors",

abstract = "MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo2Ti2C3Tx MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo2Ti2C3Tx MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g-1 at 5 mA cm-2, exceptional capacity retention of 94% after 5000 charge-discharge cycles at 50 mA cm-2, and a high gravimetric energy density of 52.5 W h kg-1 at a power density of 1442 W kg-1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology.",

keywords = "Mo and Ti-dual oxide nanoparticles, MoTiCT MXene, double transition metal MXenes, energy storage, lewis acid molten salt method",

author = "Dayakar Gandla and Yun{\textquoteright}an Zhou and Yihao Yan and Yifan Niu and Fuming Zhang and Tan, {Daniel Q.}",

note = "Publisher Copyright: {\textcopyright} 2024 American Chemical Society",

year = "2024",

doi = "10.1021/acsaem.4c00438",

language = "英语",

journal = "ACS Applied Energy Materials",

issn = "2574-0962",

publisher = "American Chemical Society",

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TY - JOUR

T1 - In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo2Ti2C3Tx MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

AU - Gandla, Dayakar

AU - Zhou, Yun’an

AU - Yan, Yihao

AU - Niu, Yifan

AU - Zhang, Fuming

AU - Tan, Daniel Q.

PY - 2024

Y1 - 2024

N2 - MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo2Ti2C3Tx MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo2Ti2C3Tx MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g-1 at 5 mA cm-2, exceptional capacity retention of 94% after 5000 charge-discharge cycles at 50 mA cm-2, and a high gravimetric energy density of 52.5 W h kg-1 at a power density of 1442 W kg-1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology.

AB - MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo2Ti2C3Tx MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo2Ti2C3Tx MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g-1 at 5 mA cm-2, exceptional capacity retention of 94% after 5000 charge-discharge cycles at 50 mA cm-2, and a high gravimetric energy density of 52.5 W h kg-1 at a power density of 1442 W kg-1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology.

KW - Mo and Ti-dual oxide nanoparticles

KW - MoTiCT MXene

KW - double transition metal MXenes

KW - energy storage

KW - lewis acid molten salt method

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U2 - 10.1021/acsaem.4c00438

DO - 10.1021/acsaem.4c00438

M3 - 文章

AN - SCOPUS:85189513418

SN - 2574-0962

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

ER -

In Situ Synthesis of Mo and Ti-Dual Oxide-Incorporated Mo₂Ti₂C₃T_x MXene Electrode Using a Lewis Acid-Assisted Method for Pseudocapacitors

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