Tiny Ir doping of sub-one-nanometer PtMn nanowires: highly active and stable catalysts for alcohol electrooxidation

Nanoscale ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 12098-12105 ◽  
Author(s):  
Fei Gao ◽  
Yangping Zhang ◽  
Fangfang Ren ◽  
Tongxin Song ◽  
Yukou Du
Keyword(s):  
Atomic Level ◽  
Highly Active ◽  
Electrocatalytic Performance ◽  
Alcohol Electrooxidation

We proposed a facile yet rational strategy to synthesize tiny Ir-doping PtMn 1D ultrathin NWs at an atomic level. The composition-optimized Pt74Mn21Ir5 NWs showed superior electrocatalytic performance for EOR and MOR.

Atomic-level Coupled Spinel@perovskite Dual-phase Oxides toward Enhanced Performance in Zn-air Batteries

2022 ◽  
Author(s):  
Jiaqi Ran ◽  
Jianfeng Wu ◽  
Yongfeng Hu ◽  
Mohsen Shakouri ◽  
Baorui Xia ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Atomic Level ◽  
Dual Phase ◽  
Interface Engineering ◽  
Efficient Strategy ◽  
Electrocatalytic Performance

Interface engineering has been proved to be an efficient strategy for boosting electrocatalytic performance and has attracted increasing interest in past few decades. Herein, Co3O4@LaCoO3 heterojunctions with abundant oxygen vacancies,...

scholarly journals Revealing the effect of electrocatalytic performance boost during hydrogen evolution reaction on free-standing SWCNT film electrode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Karolina Kordek-Khalil ◽  
Dawid Janas ◽  
Piotr Rutkowski
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Carbon Nanomaterials ◽  
Low Cost ◽  
High Surface ◽  
Water Electrolysis ◽  
Free Standing ◽  
Highly Active ◽  
Electrocatalytic Performance

AbstractLarge-scale sustainable hydrogen production by water electrolysis requires a highly active yet low-cost hydrogen evolution reaction (HER) electrocatalyst. Conductive carbon nanomaterials with high surface areas are promising candidates for this purpose. In this contribution, single-walled carbon nanotubes (SWCNTs) are assembled into free-standing films and directly used as HER electrodes. During the initial 20 h of electrocatalytic performance in galvanostatic conditions, the films undergo activation, which results in a gradual overpotential decrease to the value of 225 mV. Transient physicochemical properties of the films at various activation stages are characterized to reveal the material features responsible for the activity boost. Results indicate that partial oxidation of iron nanoparticles encapsulated in SWCNTs is the major contributor to the activity enhancement. Furthermore, besides high activity, the material, composed of only earth-abundant elements, possesses exceptional performance stability, with no activity loss for 200 h of galvanostatic performance at − 10 mA cm−2. In conclusion, the work presents the strategy of engineering a highly active HER electrode composed of widely available elements and provides new insights into the origins of electrocatalytic performance of SWCNT-based materials in alkaline HER.

The rational doping of P and W in multi-stage catalysts to trigger Pt-like electrocatalytic performance

2020 ◽  
Vol 8 (47) ◽  
pp. 25165-25172
Author(s):  
Yunmei Du ◽  
Wensi Wang ◽  
Huimin Zhao ◽  
Yanru Liu ◽  
Shaoxiang Li ◽  
...  
Keyword(s):  
Active Sites ◽  
Highly Active ◽  
Electrocatalytic Performance ◽  
Multi Stage

Motivated by the synergistic incorporation of W and P, the 2H-phase MoS2 with limited edge active sites was partially converted into highly active 1T-phase MoS2 with rich defects.

Porous NiMoO4−x/MoO2 hybrids as highly effective electrocatalysts for the water splitting reaction

2018 ◽  
Vol 6 (26) ◽  
pp. 12361-12369 ◽  
Author(s):  
Zhe Zhang ◽  
Xingxing Ma ◽  
Jilin Tang
Keyword(s):  
Water Splitting ◽  
Atomic Level ◽  
Highly Active ◽  
Highly Effective

NiMoO4−x/MoO2 hybrids with highly active Mo5+ species and atomic-level coupled nanointerfaces were synthesized as highly effective electrocatalysts for the water splitting reaction.

Facile Synthesis of CoSe2 Nanoparticles and their Electrocatalytic Performance for Hydrogen Evolution Reaction

2016 ◽  
Vol 852 ◽  
pp. 916-920 ◽  
Author(s):  
Hong Xue Qi ◽  
Yuan Qiang Song ◽  
Zhong Ping Liu ◽  
Lan Xiang Ji ◽  
Jian Guo Deng
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Energy Efficient ◽  
Average Diameter ◽  
Facile Synthesis ◽  
One Pot ◽  
Metal Free ◽  
Highly Active ◽  
Electrocatalytic Performance ◽  
Free Hydrogen

For more energy-efficient and economical hydrogen production, highly active noble metal-free hydrogen evolution catalysts are a priority for all. Herein, we report a facile one-pot hydrothermal synthesis of CoSe2 nanoparticles with their electrocatalytic performance for hydrogen evolution reaction. The synthesized CoSe2 nanoparticles have an average diameter of 50-70 nm with a uniform distribution. They also exhibited good electrocatalytic performance for hydrogen evolution reaction with the onset overpotential and Tafel slope of 140 mV and 95 mV/dec, respectively. The results provide a facile and effective way for the exploration of efficient Co-based HER catalysts.

Erratum to: Highly active zigzag-like Pt-Zn alloy nanowires with high-index facets for alcohol electrooxidation

Nano Research ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1973-1973
Author(s):  
Yanchao Xu ◽  
Xiaoqiang Cui ◽  
Shuting Wei ◽  
Qinghua Zhang ◽  
Lin Gu ◽  
...  
Keyword(s):  
High Index ◽  
Highly Active ◽  
Alloy Nanowires ◽  
Zn Alloy ◽  
Alcohol Electrooxidation

scholarly journals Cobalt Nanoparticles Embedded into N-Doped Carbon from Metal Organic Frameworks as Highly Active Electrocatalyst for Oxygen Evolution Reaction

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 828 ◽  
Author(s):  
Jitao Lu ◽  
Yue Zeng ◽  
Xiaoxue Ma ◽  
Huiqin Wang ◽  
Linna Gao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Carbon Composite ◽  
Cobalt Nanoparticles ◽  
High Specific Surface Area ◽  
Highly Active ◽  
Electrocatalytic Performance ◽  
Metal Organic

Cystosepiment-like cobalt nanoparticles@N-doped carbon composite named Co-NPs@NC with highly efficient electrocatalytic performance for oxygen evolution reaction was prepared from carbonization of N-doped Co-MOFs. The optimized Co-NPs@NC-600 shows overpotentials of 315 mV to afford a current density of 10 mA·cm−2. Meanwhile, the electrocatalys presents excellent long-term durability. The outstanding electrocatalytic performance can be attributed to the unique cystosepiment-like architecture with high specific surface area (214 m2/g), high conductivity of N-doped carbon and well-distributed active sites.

scholarly journals Improving the electrocatalytic performance of sustainable Co/carbon materials for the oxygen evolution reaction by ultrasound and microwave assisted synthesis

2021 ◽  
Author(s):  
Alessio Zuliani ◽  
Manuel Cano ◽  
Federica Calsolaro ◽  
Alain R. Puente Santiago ◽  
Juan J. Giner-Casares ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Carbon Materials ◽  
Cobalt Content ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Highly Active ◽  
Electrocatalytic Performance

Microwave and ultrasound preparation of highly active OER electrodes derived from pinecones and having a low cobalt content is reported.

Highly active zigzag-like Pt-Zn alloy nanowires with high-index facets for alcohol electrooxidation

Nano Research ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 1173-1179 ◽  
Author(s):  
Yanchao Xu ◽  
Xiaoqiang Cui ◽  
Shuting Wei ◽  
Qinghua Zhang ◽  
Lin Gu ◽  
...  
Keyword(s):  
High Index ◽  
Highly Active ◽  
Alloy Nanowires ◽  
Zn Alloy ◽  
Alcohol Electrooxidation
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