Journal ArticleDOI
Quasihexagonal Platinum Nanodendrites Decorated over CoS2‐N‐Doped Reduced Graphene Oxide for Electro‐Oxidation of C1‐, C2‐, and C3‐Type Alcohols
Natarajan Logeshwaran,Iyyappa Rajan Panneerselvam,S. Ramakrishnan,R. Kumar,Ae Rhan Kim,Yan Wang,Dong Jin Yoo +6 more
TLDR
The obtained results emphasize the advances in effective precious material utilization and fabricating techniques of active electrocatalysts for direct alcohol oxidation fuel cell applications.Abstract:
The development of efficient and highly durable materials for renewable energy conversion devices is crucial to the future of clean energy demand. Herein, cage‐like quasihexagonal structured platinum nanodendrites decorated over the transition metal chalcogenide core (CoS2)‐N‐doped graphene oxide (PtNDs@CoS2‐NrGO) through optimized shape engineering and structural control technology are fabricated. The prepared electrocatalyst of PtNDs@CoS2‐NrGO is effectively used as anodic catalyst for alcohol oxidation in direct liquid alcohol fuel cells. Notably, the prepared PtNDs@CoS2‐NrGO exhibits superior electrocatalytic performance toward alcohol oxidation with higher oxidation peak current densities of 491.31, 440.25, and 438.12 mA mgpt–1 for (methanol) C1, (ethylene glycol) C2, and (glycerol) C3 fuel electrolytes, respectively, as compared to state‐of‐the‐art Pt‐C in acidic medium. The electro‐oxidation durability of PtNDs@CoS2‐NrGO is investigated through cyclic voltammetry and chronoamperometry tests, which demonstrate excellent stability of the electrocatalyst toward various alcohols. Furthermore, the surface and adsorption energies of PtNDs and CoS2 are calculated using density functional theory along with the detailed bonding analysis. Overall, the obtained results emphasize the advances in effective precious material utilization and fabricating techniques of active electrocatalysts for direct alcohol oxidation fuel cell applications.read more
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Journal ArticleDOI
Quasihexagonal Platinum Nanodendrites Decorated over CoS2‐N‐Doped Reduced Graphene Oxide for Electro‐Oxidation of C1‐, C2‐, and C3‐Type Alcohols
Natarajan Logeshwaran,Iyyappa Rajan Panneerselvam,S. Ramakrishnan,R. Kumar,Ae Rhan Kim,Yan Wang,Dong Jin Yoo +6 more
TL;DR: The obtained results emphasize the advances in effective precious material utilization and fabricating techniques of active electrocatalysts for direct alcohol oxidation fuel cell applications.
Journal ArticleDOI
Anion dependency of spinel type cobalt catalysts for efficient overall water splitting in an acid medium
R. Santhosh Kumar,Sreejith Karthikeyan,Ram Shanmugam,S. Vijayapradeep,Ae Rhan Kim,Jong-Soo Kim,Dong-Jin Yoo +6 more
TL;DR: In this article , a spinel-structured, cobalt-based, and carbon-supported electrocatalyst (Co3O4@rGO and Co3S4@ rGO) was designed for sustainable water splitting for manufacturing green hydrogen.
Journal ArticleDOI
Tetrafunctional electrocatalyst for oxygen reduction, oxygen evolution, hydrogen evolution, and carbon dioxide reduction reactions
TL;DR: In this paper , a tetrafunctional electrocatalyst consisting of NiFe layered double-hydroxide (LDH) nanosheets anchored on carbon-nanotube-grafted (CNT), Co3O4-embedded, and N-doped porous carbon matrices (NC) derived from zeolitic imidazolate frameworks was synthesized.
Journal ArticleDOI
Synergistic effect and nanostructure engineering of three-dimensionally hollow mesoporous spherical Cu3P/TiO2 in aqueous/flexible Zn–air batteries
TL;DR: In this paper , a high-temperature pyrolysis strategy was proposed to induce charge transfer of 3D hollow mesoporous carbon nanospheres (Cu3P/TiO2@NC).
Journal ArticleDOI
Heteroatom-Doped Porous Carbon-Based Nanostructures for Electrochemical CO2 Reduction
TL;DR: In this article , the effect of mono, binary, and ternary dopants (i.e., N, S, F, or B) on the CO2RR activity and durability is discussed.
References
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Journal ArticleDOI
Facile Synthesis of Nitrogen-Doped Graphene via Pyrolysis of Graphene Oxide and Urea, and its Electrocatalytic Activity toward the Oxygen-Reduction Reaction
TL;DR: In this article, it was shown that nitrogen-doped graphene (NG) has high catalytic activity toward the oxygen-reduction reaction (ORR), which often limits the performance of the cathode in a fuel cell or a metalair battery.
Journal ArticleDOI
Recent Advances on Water-Splitting Electrocatalysis Mediated by Noble-Metal-Based Nanostructured Materials
Yingjie Li,Yingjun Sun,Yingjun Sun,Yingnan Qin,Yingnan Qin,Weiyu Zhang,Lei Wang,Mingchuan Luo,Huai Yang,Shaojun Guo +9 more
Journal ArticleDOI
Direct Synthesis of Spatially-Controlled Pt-on-Pd Bimetallic Nanodendrites with Superior Electrocatalytic Activity
TL;DR: A facile synthesis of Pt-on-Pd bimetallic nanodendrites with a Pd interior and dendritic Pt exterior with superior electrocatalytic activity in comparison with commercial Pt Electrocatalysts is reported.
Journal ArticleDOI
Nest-like NiCoP for Highly Efficient Overall Water Splitting
TL;DR: In this article, a ternary NiCoP/carbon cloth (CC) electrocatalyst with superior catalytic activity and stability for hydrogen evolution reaction and oxygen evolution reaction was proposed.
Journal ArticleDOI
Surface energies, work functions, and surface relaxations of low index metallic surfaces from first principles
TL;DR: In this article, the surface relaxations, surface energies, and work functions of low-index metallic surfaces using pseudopotential plane-wave density-functional calculations within the generalized gradient approximation were studied.