Results 91 to 100 of about 21,338 (294)

Proton conduction in organic solids [PDF]

open access: yes, 1971
Dielectric, d. c. conductivity and electrolysis measurements have been made principally on solid imidazole and urea. Electrode effects, especially the development of a suitable protode, and techniques for detecting mobile protons in solids were pursued ...
Chan-Henry, Robert Yatshein
core   +1 more source

Solid-state proton conduction in graphene-derived nanomaterials

open access: yesSustainability Science and Technology
Solid-state proton conduction has gained considerable attention owing to its importance in various fields, including the proton exchange membrane fuel cell (PEMFC), which serves as an efficient renewable energy resource. Recently, graphene materials have
Sweety Gupta, Palak Mehra, Amit Paul
doaj   +1 more source

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

open access: yesAdvanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang   +13 more
wiley   +1 more source

Structural Insights into Proton Conduction in Gallic Acid–Isoniazid Cocrystals [PDF]

open access: yes, 2016
Hydrated cocrystal of gallic acid–isoniazid displays a single crystal-to-single crystal transformation upon dehydration, resulting in a difference of three orders of magnitude in proton conduction.
Aninda J. Bhattacharyya (1850557)   +4 more
core   +1 more source

A Bilayered Inorganic‐Metal Interface Enables Highly Reversible Aluminum Deposition for Long‐Life Aqueous Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A gradient M/MOx (M = Sn, Cu, Cd) synergistic interphase was constructed on Al via a one‐step displacement reaction. This interphase leverages high aluminophilicity and ion‐buffering capability to accelerate desolvation, enhance Al3+ transport, and suppress side reactions, enabling ultrastable symmetric cell operation at 0.05 mA cm−2 for 1800 h with an
Shuang Cheng   +7 more
wiley   +1 more source

Nanoionics phenomenon in proton-conducting oxide: Effect of dispersion of nanosize platinum particles on electrical conduction properties

open access: yesScience and Technology of Advanced Materials, 2007
High-temperature proton conductors are oxides in which low-valence cations are doped as electron acceptors; the incorporation of water molecules into the oxides results in the formation of protonic defects that act as charge carriers.
Hiroshige Matsumoto et al
doaj  

Toward Fast Proton Shuttling in Acidic Oxygen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
This review establishes proton transfer dynamics as a descriptor governing acidic OER activity, moving beyond the kinetic constraints derived from the proton coupled electron transfer. We discuss how deprotonation governs classical mechanisms, including adsorbate evolution mechanism (AEM), lattice oxygen mechanism (LOM) and oxide path mechanism (OPM ...
Ashish Gaur   +3 more
wiley   +1 more source

Advances in proton exchange membranes for wide-temperature-range fuel cells

open access: yesGlobal Energy Interconnection
Proton exchange membranes (PEMs) play a central role in determining the efficiency, durability, and operational flexibility of PEM fuel cells (PEMFCs).
Yunjie Yang   +5 more
doaj   +1 more source

Steering Oxygen Activation Pathways via Redox Dual‐Defects in 2D Hydrated WO3 for High‐Yield Singlet Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
Redox dual‐defects (Cs substitution and O vacancies) in 2D hydrated WO3 steer O2 activation toward selective singlet oxygen evolution. WO‐CO achieves 8.6–15.8 times higher 1O2 production than single‐defect or pristine catalysts, enabling efficient pollutant mineralization via a pathway‐selective photocatalytic mechanism.
Sheng‐Qi Guo   +8 more
wiley   +1 more source

Bio-analogue Amino Acid-Based Proton-Conduction Wires for Fuel Cell Membranes [PDF]

open access: yes, 2016
In contrast to still inefficient and expensive technical proton-conducting membranes, which rely on sulfonic acid activity, biology has solved its energy-related proton-conduction problems by evolving protein-bordered channels exposing amino acids for ...
Helmut Tributsch (2453371)   +4 more
core   +1 more source

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