Unlocking Novel Functionality: Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors

Eunji Kim; Seongbeen Kim; Hyeong Min Jin; Gyungtae Kim; Hwi Heon Ha; Yunhui Choi; Kyoungha Min; Su Ho Cho; Hee Han; Chi Won Ahn; Jaewoo Roh; Il Kwon Oh; Jinwoo Lee; Yonghee Lee

doi:10.1007/s40820-024-01567-2

Unlocking Novel Functionality: Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors

Eunji Kim
, Seongbeen Kim
, Hyeong Min Jin
, Gyungtae Kim
, Hwi Heon Ha
, Yunhui Choi
, Kyoungha Min
, Su Ho Cho
, Hee Han
, Chi Won Ahn
, Jaewoo Roh
, Il Kwon Oh
, Jinwoo Lee
, Yonghee Lee

Department of Nano & Advanced Materials Science and Engineering

Korea Advanced Institute of Science and Technology
National Nano Fab Center (NNFC)
Chungnam National University

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

25 Scopus citations

Abstract

We have discovered a novel phenomenon where the pseudocapacitance of flexible MXene supercapacitors changes sensitively in response to bending, leading to the development of Pseudocapacitive Sensors. Pseudocapacitive Sensors repurpose supercapacitors as strain sensors, detecting capacitance changes from shifts between pseudocapacitance and electrical double layer capacitor. These highly sensitive sensors have a gauge factor of about 1200, far exceeding that of conventional strain sensors.

Original language	English
Article number	86
Journal	Nano-Micro Letters
Volume	17
Issue number	1
DOIs	https://doi.org/10.1007/s40820-024-01567-2
State	Published - Dec 2025

Keywords

Local pH
MXenes
Operando measurements
Pseudocapacitive sensing
Supercapacitors

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10.1007/s40820-024-01567-2

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title = "Unlocking Novel Functionality: Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors",

abstract = "We have discovered a novel phenomenon where the pseudocapacitance of flexible MXene supercapacitors changes sensitively in response to bending, leading to the development of Pseudocapacitive Sensors. Pseudocapacitive Sensors repurpose supercapacitors as strain sensors, detecting capacitance changes from shifts between pseudocapacitance and electrical double layer capacitor. These highly sensitive sensors have a gauge factor of about 1200, far exceeding that of conventional strain sensors.",

keywords = "Local pH, MXenes, Operando measurements, Pseudocapacitive sensing, Supercapacitors",

author = "Eunji Kim and Seongbeen Kim and Jin, \{Hyeong Min\} and Gyungtae Kim and Ha, \{Hwi Heon\} and Yunhui Choi and Kyoungha Min and Cho, \{Su Ho\} and Hee Han and Ahn, \{Chi Won\} and Jaewoo Roh and Oh, \{Il Kwon\} and Jinwoo Lee and Yonghee Lee",

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doi = "10.1007/s40820-024-01567-2",

language = "English",

volume = "17",

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TY - JOUR

T1 - Unlocking Novel Functionality

T2 - Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors

AU - Kim, Eunji

AU - Kim, Seongbeen

AU - Jin, Hyeong Min

AU - Kim, Gyungtae

AU - Ha, Hwi Heon

AU - Choi, Yunhui

AU - Min, Kyoungha

AU - Cho, Su Ho

AU - Han, Hee

AU - Ahn, Chi Won

AU - Roh, Jaewoo

AU - Oh, Il Kwon

AU - Lee, Jinwoo

AU - Lee, Yonghee

PY - 2025/12

Y1 - 2025/12

N2 - We have discovered a novel phenomenon where the pseudocapacitance of flexible MXene supercapacitors changes sensitively in response to bending, leading to the development of Pseudocapacitive Sensors. Pseudocapacitive Sensors repurpose supercapacitors as strain sensors, detecting capacitance changes from shifts between pseudocapacitance and electrical double layer capacitor. These highly sensitive sensors have a gauge factor of about 1200, far exceeding that of conventional strain sensors.

AB - We have discovered a novel phenomenon where the pseudocapacitance of flexible MXene supercapacitors changes sensitively in response to bending, leading to the development of Pseudocapacitive Sensors. Pseudocapacitive Sensors repurpose supercapacitors as strain sensors, detecting capacitance changes from shifts between pseudocapacitance and electrical double layer capacitor. These highly sensitive sensors have a gauge factor of about 1200, far exceeding that of conventional strain sensors.

KW - Local pH

KW - MXenes

KW - Operando measurements

KW - Pseudocapacitive sensing

KW - Supercapacitors

UR - https://www.scopus.com/pages/publications/85211362061

U2 - 10.1007/s40820-024-01567-2

DO - 10.1007/s40820-024-01567-2

M3 - Article

AN - SCOPUS:85211362061

SN - 2311-6706

VL - 17

JO - Nano-Micro Letters

JF - Nano-Micro Letters

IS - 1

M1 - 86

ER -

Unlocking Novel Functionality: Pseudocapacitive Sensing in MXene-Based Flexible Supercapacitors

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Keywords

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