Electrocatalytic and Li-ion storage performance of binder-free Co(MnFeNiCuZn)P/copper foam electrodes

IF 5.7 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem Pub Date : 2025-11-01 Epub Date: 2025-11-24 DOI:10.1016/j.flatc.2025.100975

M.H. Sepahdar , S.M. Masoudpanah , B. Aslibeiki , T. Sarkar

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Abstract

Electrocatalysts and lithium-ion batteries (LIBs) have emerged as leading solutions for renewable energy conversion and storage. Layered multiple hydroxides (LMHs), commonly used as 2D precursors in the synthesis of transition metal phosphides (TMPs) because of their high electrical conductivity, have garnered considerable attention for their potential in various charge storage devices. This is due to their exceptional electrochemical characteristics and cost-effectiveness. A binder-free CoM LMH (M = Mn, Fe, Ni, Cu, Zn) electrode was synthesized on copper foam (CF) substrates using a one-step hydrothermal method and subsequently phosphidated via chemical vapor deposition (CVD). The CoMP/CF electrode showed the lowest overpotentials of 210 mV for the hydrogen evolution reaction (HER) and 355 mV for the oxygen evolution reaction (OER) at a current density of 10 mA cm⁻². Additionally, the CoM LMH/CF electrode was tested in a simulated seawater electrolyte, exhibiting low overpotentials of 265 mV for HER and 428 mV for OER at a current density of 10 mA cm⁻². The CoMP/CF electrode also showcased a high capacity of 4028 mAh g⁻¹ at 0.05 A g⁻¹, maintaining 81 % capacity retention and a coulombic efficiency of 99.8 % after 1860 cycles.

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无粘结剂Co(MnFeNiCuZn)P/铜泡沫电极的电催化和锂离子存储性能

电催化剂和锂离子电池（LIBs）已成为可再生能源转换和存储的主要解决方案。层状多氢氧化物（LMHs）由于其高导电性，通常被用作合成过渡金属磷化物（TMPs）的二维前体，在各种电荷存储器件中具有很大的潜力，引起了人们的广泛关注。这是由于它们卓越的电化学特性和成本效益。采用一步水热法在泡沫铜（CF）衬底上合成了无粘结剂的CoM LMH （M = Mn, Fe, Ni, Cu, Zn）电极，并通过化学气相沉积（CVD）进行了磷化处理。CoMP/CF电极在电流密度为10 mA cm−2时，析氢反应（HER）的过电位最低为210 mV，析氧反应（OER）的过电位最低为355 mV。此外，CoM LMH/CF电极在模拟海水电解质中进行了测试，在电流密度为10 mA cm - 2时，HER和OER的过电位分别为265 mV和428 mV。CoMP/CF电极在0.05 a g−1下也显示出4028 mAh g−1的高容量，在1860次循环后保持81%的容量保留率和99.8%的库仑效率。

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来源期刊

FlatChem Multiple-

CiteScore

8.40

自引率

6.50%

发文量

104

审稿时长

26 days

期刊介绍： FlatChem - Chemistry of Flat Materials, a new voice in the community, publishes original and significant, cutting-edge research related to the chemistry of graphene and related 2D & layered materials. The overall aim of the journal is to combine the chemistry and applications of these materials, where the submission of communications, full papers, and concepts should contain chemistry in a materials context, which can be both experimental and/or theoretical. In addition to original research articles, FlatChem also offers reviews, minireviews, highlights and perspectives on the future of this research area with the scientific leaders in fields related to Flat Materials. Topics of interest include, but are not limited to, the following: -Design, synthesis, applications and investigation of graphene, graphene related materials and other 2D & layered materials (for example Silicene, Germanene, Phosphorene, MXenes, Boron nitride, Transition metal dichalcogenides) -Characterization of these materials using all forms of spectroscopy and microscopy techniques -Chemical modification or functionalization and dispersion of these materials, as well as interactions with other materials -Exploring the surface chemistry of these materials for applications in: Sensors or detectors in electrochemical/Lab on a Chip devices, Composite materials, Membranes, Environment technology, Catalysis for energy storage and conversion (for example fuel cells, supercapacitors, batteries, hydrogen storage), Biomedical technology (drug delivery, biosensing, bioimaging)