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<p>CeO<sub>2</sub> Nanowires Inserted into Reduced Graphene Oxide as Active Electrocatalyst for Oxygen Reduction Reaction</p>

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Title Statement <p>CeO<sub>2</sub> Nanowires Inserted into Reduced Graphene Oxide as Active Electrocatalyst for Oxygen Reduction Reaction</p>
 
Added Entry - Uncontrolled Name Sun, Yabo
Chu, Yuanyuan
Xia, Xiaoming
Wang, Haitao
Tan, Xiaoyao
Dai, Zhao
Wang, Liang
the National Natural Science Foundation of China (Grant No. 21206124, No. 21506159, No. 51478314 and No. 51638011), National Key Research and Development Plan (2016YFC0400503, 2016YFC0400506), Natural Science Foundation of Tianjin (No.12JCZDJC28400 and No
 
Uncontrolled Index Term catalysis
CeO2 nanowires, reduced graphene oxide, synergistic effects, oxygen reduction reaction
 
Summary, etc. <p class="JournalofAppliedElectrochemistry">Fabrication of an interconnected and conductive nano-architecture is a prospective strategy to design a high-performance and low cost electrocatalyst for oxygen reduction reaction (ORR). Herein, a novel nano-architecture assembled by graphene nanosheets and CeO<sub>2</sub> nanowires (NWs) with a hierarchical structure was developed by a facile hydrothermal process using ethanol/water as solvents without any organic additives. In this framework, graphene oxide (GO) was reduced to graphene and chemical bonding formed between the GO and CeO<sub>2 NWs </sub>in a hydrothermal process. The imbedded CeO<sub>2</sub> <sub>NWs</sub> could prevent the restacking of the graphene sheets and improved the electrical conductivity of the hybrid catalyst. The effect of different ratios of GO to CeO<sub>2</sub> <sub>NWs</sub> in the hybrid were studied. The GO<sub>3</sub>-CeO<sub>2 NWs</sub> composite exhibited better catalytic performance with slow attenuation and high limiting current density 3.55 and 1.99 times higher than CeO<sub>2 NWs</sub> and pure GO. The onset potential of GO<sub>3</sub>-CeO<sub>2 NWs</sub> is 0.13 V and 0.05 V positive shift from that of CeO<sub>2</sub> <sub>NWs</sub> and pure GO, respectively, suggesting that the GO<sub>3</sub>-CeO<sub>2 NWs</sub> hybrid had an excellent stability and activity for ORR. It was found that CeO<sub>2 NWs</sub> served not only as an effective catalyst but also as an “oxygen buffer” to relieve oxygen insufficiency for ORR.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-10-12 16:10:18
 
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http://op.niscair.res.in/index.php/IJCA/article/view/22744
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 58, ##issue.no## 8 (2019): INDIAN JOURNAL OF CHEMISTRY- SECTION A
 
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