TY - JOUR
T1 - Pristine Ti3C2Tx MXene Enables Flexible and Transparent Electrochemical Sensors
AU - Noriega Pedraza, Natalia
AU - Shekhirev, Mikhail
AU - Shuck, Christopher
AU - Salvage, Jonathan
AU - VahidMohammadi, Armin
AU - Dymond, Marcus
AU - Lacey, Joseph
AU - Sandeman, Susan
AU - Gogotsi, Yury
AU - Patel, Bhavik
PY - 2024/1/23
Y1 - 2024/1/23
N2 - In the era of the internet of things, there exists a pressing need for technologies that meet the stringent demands of wearable, self-powered, and seamlessly integrated devices. Current approaches to developing MXene-based electrochemical sensors involve either rigid or opaque components, limiting their use in niche applications. This study investigates the potential of pristine Ti3C2Tx electrodes for flexible and transparent electrochemical sensing, achieved through an exploration of how material characteristics (flake size, flake orientation, film geometry, and uniformity) impact the electrochemical activity of the outer sphere redox probe ruthenium hexamine using cyclic voltammetry. The optimized electrode made of stacked large Ti3C2Tx flakes demonstrated excellent reproducibility and resistance to bending conditions, suggesting their use for reliable, robust, and flexible sensors. Reducing electrode thickness resulted in an amplified faradaic-to-capacitance signal, which is advantageous for this application. This led to the deposition of transparent thin Ti3C2Tx films, which maintained their best performance up to 73% transparency. These findings underscore its promise for high-performance, tailored sensors, marking a significant stride in advancing MXene utilization in next-generation electrochemical sensing technologies. The results encourage the analytical electrochemistry field to take advantage of the unique properties that pristine Ti3C2Tx electrodes can provide in sensing through more parametric studies.
AB - In the era of the internet of things, there exists a pressing need for technologies that meet the stringent demands of wearable, self-powered, and seamlessly integrated devices. Current approaches to developing MXene-based electrochemical sensors involve either rigid or opaque components, limiting their use in niche applications. This study investigates the potential of pristine Ti3C2Tx electrodes for flexible and transparent electrochemical sensing, achieved through an exploration of how material characteristics (flake size, flake orientation, film geometry, and uniformity) impact the electrochemical activity of the outer sphere redox probe ruthenium hexamine using cyclic voltammetry. The optimized electrode made of stacked large Ti3C2Tx flakes demonstrated excellent reproducibility and resistance to bending conditions, suggesting their use for reliable, robust, and flexible sensors. Reducing electrode thickness resulted in an amplified faradaic-to-capacitance signal, which is advantageous for this application. This led to the deposition of transparent thin Ti3C2Tx films, which maintained their best performance up to 73% transparency. These findings underscore its promise for high-performance, tailored sensors, marking a significant stride in advancing MXene utilization in next-generation electrochemical sensing technologies. The results encourage the analytical electrochemistry field to take advantage of the unique properties that pristine Ti3C2Tx electrodes can provide in sensing through more parametric studies.
KW - Ti3C2Tx
KW - MXene
KW - electrochemical activity
KW - orientation
KW - flake size
KW - thickness
KW - reproducibility
KW - flexibility
KW - transparency
UR - http://www.scopus.com/inward/record.url?scp=85184661203&partnerID=8YFLogxK
U2 - 10.1021/acsami.3c14842
DO - 10.1021/acsami.3c14842
M3 - Article
SN - 1944-8244
VL - 16
SP - 6569
EP - 6578
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 5
ER -