Universität zu Köln

Bhardwaj, Aman, Bae, Hohan, Mathur, Lakshya, Mathur, Sanjay and Song, Sun-Ju (2022). Cubic Bi2O3-Based Electrochemical Nitric Oxide Sensor Using Double Perovskite Oxide Electrodes. J. Electrochem. Soc., 169 (11). PENNINGTON: ELECTROCHEMICAL SOC INC. ISSN 1945-7111

Full text not available from this repository.

Abstract

For achieving a sustainable energy future, energy consumption through renewable sources needs to be maximized and greenhouse emissions should be radically reduced. Automotive exhausts sharing the largest global NOX emissions must meet regulated standards by after-treatment systems (ATS) equipped with smart electronic feedback loops through on-board NOX monitoring. Herein, we demonstrate an efficient (Dy, W) co-doped Bi2O3-based electrochemical sensing architecture equipped with Ln(2)NiMnO(6) double perovskite oxides (DPOs) as electrode materials for selective nitric oxides (NO) detection. The sensor configuration facilitates operation in a wide temperature range (325 & DEG;C-500 & DEG;C) with high sensitivity of 50 mV/decade, a response time below 60 sec. and detection abilities as low as 200 ppb. While investigating the impact of rare-Earth cations, a predominant Ni3+-O-Mn3+ interaction and acquisition of optimal e(g) (1) electron configuration of transition metal atoms in La2NiMnO6 was found responsible for improved electrocatalytic and redox chemical activity that substantiates the sensing behavior. The study carefully scrutinizes the sensing mechanism to abide by the mixed-potential model. Moreover, the durability assessed over a month of operation supported the applicability of presented sensing elements in on-board NOX monitoring systems.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bhardwaj, Aman UNSPECIFIED UNSPECIFIED UNSPECIFIED Bae, Hohan UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Lakshya UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED Song, Sun-Ju UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-666853
DOI:	10.1149/1945-7111/aca2e0
Journal or Publication Title:	J. Electrochem. Soc.
Volume:	169
Number:	11
Date:	2022
Publisher:	ELECTROCHEMICAL SOC INC
Place of Publication:	PENNINGTON
ISSN:	1945-7111
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PLATE-LIKE CR2O3; SENSING ELECTRODE; SOLID-ELECTROLYTE; TOTAL NOX; TEMPERATURE; ZIRCONIA; OXYGEN; SENSITIVITY; PERFORMANCE; MECHANISM Multiple languages Electrochemistry; Materials Science, Coatings & Films Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66685