Bulk monolithic electrodes enabled by surface mechanical attrition treatment-facilitated dealloying

Abstract

Bulk dealloyed metals of large surface areas are obtained by suppressing the self-coarsening effect with surface mechanical attrition treatment (SMAT).

Dealloying Synthesis of Bimetallic (Au–Pd)/CeO2 Catalysts for CO Oxidation

“…Dealloying is a simple, efficient, and environmentally friendly technique to fabricate nanoporous materials on a large scale. − The pore size and surface structure of materials can be controlled by regulating the corrosion temperature, reaction rate, and composition of alloys. , Transition metal oxides (NiO, CuO, Co 3 O 4 ) and noble metals (Ag, Rh, , Pt) have been reported to support the CeO 2 nanorod successfully . The obtained CeO 2 -based catalysts display outstanding catalytic activity.…”

Organic carbonized copper foil facilitates the performance of the current collector for lithium-ion batteries

“…[17][18][19][20] In addition, in the process of the charge and discharge cycle, the collector surface is in contact with the electrolyte for a long time, and the micro decomposition product HF in the electrolyte will corrode the surface of the collector, resulting in the porosity and even separation between the collector and the active substances, and then the performance of the battery will decline. [21][22][23][24][25][26][27] In order to enhance the comprehensive characteristics of a Cu foil collector, efforts have been tried to address these problems, such as surface mechanical attrition treatment, [28][29][30] growing graphene or depositing Au nanoparticles or embedding Si negative particles, [31][32][33][34][35][36] surface roughening and surface nanopore treatment, [37][38][39][40][41] and ultrasonic surface rolling processing (USRP) technology, 42,43 which provided new ideas for the development of a high behavior collector in lithium ion batteries.…”

Flexible Bimetallic Nanoporous Cu-Ag Synthesized by Electrochemical Dealloying for Battery-Type Electrodes with High Electrochemical Performance

“…[1][2][3][4][5][6][7][8][9][10] Among the various fabrication techniques, dealloying approach is the most popular method to prepare nanoporous metals with random porous structure by selectively etching more reactive metal component from an alloy system through a one-step chemical/electrochemical treatment. 11,12 The nano-ligament size, pore size, and chemical composition can be tailored by controlling dealloying condition and precursor composition.…”

“…The precursors mainly include crystalline alloys consisting of a single phase (solid solution alloys, intermetallic compounds) and metallic glasses. For example, the typical nanoporous Au and Ni have been fabricated by dealloying Au-Ag 1 and Ni-Mn 13 solid solution alloys, respectively; nanoporous Cu and Ag have been synthesized by dealloying Cu-Zn/Al 12,14 and Ag-Al 15 intermetallic compounds, respectively. However, synthesizing nanoporous materials by dealloying using crystalline precursors is restricted by the limited number of alloy compositions with single-phase characteristics and inevitable crystalline defects.…”

“…28 The 3D high electrical conductive metal ligaments can facilitate pseudocapacitive or battery-type materials to fully utilize their high theoretical capacities and fast transportation of electrolyte ions to improve the electrochemical performance at high charge/discharge rates. 6,29 However, dealloyed nanoporous metals usually become brittle and fracture damage may even occur with increasing nanoporous layer thickness, thus most current research on dealloyed metals focus on very thin z E-mail: ensiyu@mail.hust.edu.cn films (typically a few hundred nm thick), 12,30 which means the loading amount of active materials is restricted and the capacitance enhancement is further inhibited. Driven by the high cost and scale production, binary or multicomponent nanoporous metals by partially substituting noble metals with economic transition metals are more appealing than monometallic nanoporous metals.…”