Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors

Sheilah Cherono; Panupong Jaipan; Zixiao Shi; Simon Gelin; Joan Ejeta; Ikenna Chris-Okoro; Mengxin Liu; Ghanashyam Gyawali; Wisdom Akande; Jonghyun Choi; Swapnil Nalawade; Shobha Mantripragada; Ram K. Gupta; James D. Schall; Kristen L. Rhinehardt; Ismaila Dabo; Shyam Aravamudhan; Bishnu P. Bastakoti; David A. Muller; Dhananjay Kumar

doi:10.1021/acsanm.5c04882

Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors

Sheilah Cherono
, Panupong Jaipan
, Zixiao Shi
, Simon Gelin
, Joan Ejeta
, Ikenna Chris-Okoro
, Mengxin Liu
, Ghanashyam Gyawali
, Wisdom Akande
, Jonghyun Choi
, Swapnil Nalawade
, Shobha Mantripragada
, Ram K. Gupta
, James D. Schall
, Kristen L. Rhinehardt
, Ismaila Dabo
, Shyam Aravamudhan
, Bishnu P. Bastakoti
, David A. Muller
, Dhananjay Kumar

Mechanical Engineering

Industrial and systems engineering with North Carolina A&T State University
Cornell University
Carnegie Mellon University
Pittsburg State University
Joint School for Nanoscience and Nanoengineering
North Carolina Agricultural and Technical State University
Cornell University College of Engineering

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

Abstract

High-quality, multifunctional two-dimensional (2D) titanium oxynitide (TiNO) thin films and one-dimensional (1D) TiNO nanowires have been synthesized using a pulsed laser deposition, a simple, fast, and congruent evaporation method. First-principles calculations as a function of surface orientation and termination indicate that surface oxidation of TiNO nanowires can stabilize the (110) orientation observed experimentally. The specific capacitance value for the TiNO nanowire samples (2725 mF/cm2) has been found to be nearly six times more than that of the TiNO thin film samples (400 mF/cm2), which is attributed to the high packing density of TiNO nanowires over a given area. The nanowire samples have also been found to exhibit a significantly higher energy density (1.35 μWh/cm2) than the TiNO thin-film samples (0.33 μWh/cm2). Thus, the TiNO material system in thin-film and nanowire forms has been demonstrated to be a promising candidate for use as an electrode material in supercapacitors and other charge-storage applications.

Original language	English
Pages (from-to)	2269-2283
Number of pages	15
Journal	ACS Applied Nano Materials
Volume	9
Issue number	5
DOIs	https://doi.org/10.1021/acsanm.5c04882
State	Published - Feb 6 2026

Keywords

charge-transfer
nanowires
pseudocapacitors
pulsed laser deposition
supercapacitance
surface orientation
thin films
titanium oxynitride

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10.1021/acsanm.5c04882

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Cherono, S., Jaipan, P., Shi, Z., Gelin, S., Ejeta, J., Chris-Okoro, I., Liu, M., Gyawali, G., Akande, W., Choi, J., Nalawade, S., Mantripragada, S., Gupta, R. K., Schall, J. D., Rhinehardt, K. L., Dabo, I., Aravamudhan, S., Bastakoti, B. P., Muller, D. A., & Kumar, D. (2026). Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors. ACS Applied Nano Materials, 9(5), 2269-2283. https://doi.org/10.1021/acsanm.5c04882

@article{f02b03aa3ac143e2836db15e9a730e5c,

title = "Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors",

abstract = "High-quality, multifunctional two-dimensional (2D) titanium oxynitide (TiNO) thin films and one-dimensional (1D) TiNO nanowires have been synthesized using a pulsed laser deposition, a simple, fast, and congruent evaporation method. First-principles calculations as a function of surface orientation and termination indicate that surface oxidation of TiNO nanowires can stabilize the (110) orientation observed experimentally. The specific capacitance value for the TiNO nanowire samples (2725 mF/cm2) has been found to be nearly six times more than that of the TiNO thin film samples (400 mF/cm2), which is attributed to the high packing density of TiNO nanowires over a given area. The nanowire samples have also been found to exhibit a significantly higher energy density (1.35 μWh/cm2) than the TiNO thin-film samples (0.33 μWh/cm2). Thus, the TiNO material system in thin-film and nanowire forms has been demonstrated to be a promising candidate for use as an electrode material in supercapacitors and other charge-storage applications.",

keywords = "charge-transfer, nanowires, pseudocapacitors, pulsed laser deposition, supercapacitance, surface orientation, thin films, titanium oxynitride",

author = "Sheilah Cherono and Panupong Jaipan and Zixiao Shi and Simon Gelin and Joan Ejeta and Ikenna Chris-Okoro and Mengxin Liu and Ghanashyam Gyawali and Wisdom Akande and Jonghyun Choi and Swapnil Nalawade and Shobha Mantripragada and Gupta, \{Ram K.\} and Schall, \{James D.\} and Rhinehardt, \{Kristen L.\} and Ismaila Dabo and Shyam Aravamudhan and Bastakoti, \{Bishnu P.\} and Muller, \{David A.\} and Dhananjay Kumar",

year = "2026",

month = feb,

day = "6",

doi = "10.1021/acsanm.5c04882",

language = "English",

volume = "9",

pages = "2269--2283",

journal = "ACS Applied Nano Materials",

issn = "2574-0970",

publisher = "American Chemical Society",

number = "5",

}

Cherono, S, Jaipan, P, Shi, Z, Gelin, S, Ejeta, J, Chris-Okoro, I, Liu, M, Gyawali, G, Akande, W, Choi, J, Nalawade, S, Mantripragada, S, Gupta, RK, Schall, JD, Rhinehardt, KL, Dabo, I, Aravamudhan, S, Bastakoti, BP, Muller, DA & Kumar, D 2026, 'Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors', ACS Applied Nano Materials, vol. 9, no. 5, pp. 2269-2283. https://doi.org/10.1021/acsanm.5c04882

TY - JOUR

T1 - Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors

AU - Cherono, Sheilah

AU - Jaipan, Panupong

AU - Shi, Zixiao

AU - Gelin, Simon

AU - Ejeta, Joan

AU - Chris-Okoro, Ikenna

AU - Liu, Mengxin

AU - Gyawali, Ghanashyam

AU - Akande, Wisdom

AU - Choi, Jonghyun

AU - Nalawade, Swapnil

AU - Mantripragada, Shobha

AU - Gupta, Ram K.

AU - Schall, James D.

AU - Rhinehardt, Kristen L.

AU - Dabo, Ismaila

AU - Aravamudhan, Shyam

AU - Bastakoti, Bishnu P.

AU - Muller, David A.

AU - Kumar, Dhananjay

PY - 2026/2/6

Y1 - 2026/2/6

N2 - High-quality, multifunctional two-dimensional (2D) titanium oxynitide (TiNO) thin films and one-dimensional (1D) TiNO nanowires have been synthesized using a pulsed laser deposition, a simple, fast, and congruent evaporation method. First-principles calculations as a function of surface orientation and termination indicate that surface oxidation of TiNO nanowires can stabilize the (110) orientation observed experimentally. The specific capacitance value for the TiNO nanowire samples (2725 mF/cm2) has been found to be nearly six times more than that of the TiNO thin film samples (400 mF/cm2), which is attributed to the high packing density of TiNO nanowires over a given area. The nanowire samples have also been found to exhibit a significantly higher energy density (1.35 μWh/cm2) than the TiNO thin-film samples (0.33 μWh/cm2). Thus, the TiNO material system in thin-film and nanowire forms has been demonstrated to be a promising candidate for use as an electrode material in supercapacitors and other charge-storage applications.

AB - High-quality, multifunctional two-dimensional (2D) titanium oxynitide (TiNO) thin films and one-dimensional (1D) TiNO nanowires have been synthesized using a pulsed laser deposition, a simple, fast, and congruent evaporation method. First-principles calculations as a function of surface orientation and termination indicate that surface oxidation of TiNO nanowires can stabilize the (110) orientation observed experimentally. The specific capacitance value for the TiNO nanowire samples (2725 mF/cm2) has been found to be nearly six times more than that of the TiNO thin film samples (400 mF/cm2), which is attributed to the high packing density of TiNO nanowires over a given area. The nanowire samples have also been found to exhibit a significantly higher energy density (1.35 μWh/cm2) than the TiNO thin-film samples (0.33 μWh/cm2). Thus, the TiNO material system in thin-film and nanowire forms has been demonstrated to be a promising candidate for use as an electrode material in supercapacitors and other charge-storage applications.

KW - charge-transfer

KW - nanowires

KW - pseudocapacitors

KW - pulsed laser deposition

KW - supercapacitance

KW - surface orientation

KW - thin films

KW - titanium oxynitride

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U2 - 10.1021/acsanm.5c04882

DO - 10.1021/acsanm.5c04882

M3 - Article

SN - 2574-0970

VL - 9

SP - 2269

EP - 2283

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 5

ER -

Pseudocapacitive Titanium Oxynitride Nanowires for Ultrahigh Capacitance Supercapacitors

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