TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Bele, Marjan
AU  - Ruiz-Zepeda, Francisco
AU  - Šala, Martin
AU  - Kroflič, Ana
AU  - Hodnik, Nejc
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9979
AB  - Electrochemical stability of a commercial Rh/C catalyst has been studied in an acidic electrolyte by accelerated degradation protocols (ADP) which involved 5000 rapid voltammetric scans (1 V/s) in two potential regions: ADP1 was performed between 0.4 VRHE and 1.4 VRHE, while ADP2 was performed between 0.05 VRHE and 1.4 VRHE. Degradation of Rh/C was monitored by the changes in Rh electrochemical surface area (ECSA) and electrocatalytic activity for hydrogen evolution (HER) and oxygen reduction (ORR). Rh/C catalyst was particularly stable during ADP1 showing only a minor loss of ECSA, while its electrocatalytic activity for HER and ORR was practically unaffected, which was further corroborated with identical location SEM (IL-SEM) imaging. In the case of ADP2, severe degradation of Rh/C occurred followed by substantial decay in its electrocatalytic activity. Coupling of the electrochemical flow cell (EFC) with ICP-MS revealed much higher Rh dissolution in ADP2 than in ADP1. IL-SEM in combination with ex-situ TEM imaging showed that degradation of the Rh/C sample is not homogeneous during ADP2, as dissolution prevails on certain locations, while dissolution followed by re-deposition occurs on others. According to the results obtained in this work, Rh/C catalysts are exceptionally sensitive to the sudden potential jumps between particularly low and high values.
T2  - Electrochimica Acta
T1  - Electrochemical stability and degradation of commercial Rh/C catalyst in acidic media
VL  - 400
SP  - 139435
DO  - 10.1016/j.electacta.2021.139435
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Bele, Marjan and Ruiz-Zepeda, Francisco and Šala, Martin and Kroflič, Ana and Hodnik, Nejc",
year = "2021",
abstract = "Electrochemical stability of a commercial Rh/C catalyst has been studied in an acidic electrolyte by accelerated degradation protocols (ADP) which involved 5000 rapid voltammetric scans (1 V/s) in two potential regions: ADP1 was performed between 0.4 VRHE and 1.4 VRHE, while ADP2 was performed between 0.05 VRHE and 1.4 VRHE. Degradation of Rh/C was monitored by the changes in Rh electrochemical surface area (ECSA) and electrocatalytic activity for hydrogen evolution (HER) and oxygen reduction (ORR). Rh/C catalyst was particularly stable during ADP1 showing only a minor loss of ECSA, while its electrocatalytic activity for HER and ORR was practically unaffected, which was further corroborated with identical location SEM (IL-SEM) imaging. In the case of ADP2, severe degradation of Rh/C occurred followed by substantial decay in its electrocatalytic activity. Coupling of the electrochemical flow cell (EFC) with ICP-MS revealed much higher Rh dissolution in ADP2 than in ADP1. IL-SEM in combination with ex-situ TEM imaging showed that degradation of the Rh/C sample is not homogeneous during ADP2, as dissolution prevails on certain locations, while dissolution followed by re-deposition occurs on others. According to the results obtained in this work, Rh/C catalysts are exceptionally sensitive to the sudden potential jumps between particularly low and high values.",
journal = "Electrochimica Acta",
title = "Electrochemical stability and degradation of commercial Rh/C catalyst in acidic media",
volume = "400",
pages = "139435",
doi = "10.1016/j.electacta.2021.139435"
}

Smiljanić, M. Lj., Bele, M., Ruiz-Zepeda, F., Šala, M., Kroflič, A.,& Hodnik, N.. (2021). Electrochemical stability and degradation of commercial Rh/C catalyst in acidic media. in Electrochimica Acta, 400, 139435.
https://doi.org/10.1016/j.electacta.2021.139435

Smiljanić ML, Bele M, Ruiz-Zepeda F, Šala M, Kroflič A, Hodnik N. Electrochemical stability and degradation of commercial Rh/C catalyst in acidic media. in Electrochimica Acta. 2021;400:139435.
doi:10.1016/j.electacta.2021.139435 .

Smiljanić, Milutin Lj., Bele, Marjan, Ruiz-Zepeda, Francisco, Šala, Martin, Kroflič, Ana, Hodnik, Nejc, "Electrochemical stability and degradation of commercial Rh/C catalyst in acidic media" in Electrochimica Acta, 400 (2021):139435,
https://doi.org/10.1016/j.electacta.2021.139435 . .