Metal–Organic Framework Structure with Fe–Co–Se (MIL-88A/Fe–Co@Se) as a Cathode for Aluminum Batteries

Abstract

Rechargeable aluminum-ion batteries have received more and more attention because of their high theoretical energy density, high safety, and reasonable price. The cathode material of aluminum batteries is one of the key bottlenecks that limits their development. Although there are many reports on aluminum battery cathode materials, many of these reports fail to simultaneously solve the poor cycling stability and low specific capacity of aluminum batteries. Therefore, we formed YSNT@Se hybrids by compounding the MOFsMIL-88A@Fe–Co hydroxide yolk–shell nanotubes (YSNTs) with selenium for the first time. It was finally determined that the FeSe2 in YSNT@Se is the main redox reaction participant during charging/discharging. In the charge/discharge of YSNT@Se 500 °C, it achieved a first cycle discharge specific capacity of 292.21 mA h g–1. After 500 cycles, the discharge capacity was 233.34 mA h g–1 and the capacity retention rate reached 79.85%. This result proves that the redox process is highly reversible at the same time. This work makes it possible for aluminum batteries to have a high cycling performance and a high capacity and broadens the research direction of cathode materials for aluminum batteries.

Novel One-Dimensional Nanofiber MnSe/CMK-3 High-Performance Cathode Material for Aluminum Batteries

“…After the CMK-3-modified separator, the diffusion of soluble selenide and polyselenides was blocked, the generation of selenide was inhibited, and the electrochemical reaction proceeded normally. In Figure f and Table S2, this work is compared with other studies showing that MnSe-800/CMK-3 has certain advantages over other cathode materials. ,− The battery was tested for 0, 90, and 180° folding (Figure g), respectively, and the battery could work normally in three states. After folding the battery at 90 and 180°, the battery can still light up the light-emitting diode, which proves the application prospect of this work in wearable electronic devices.…”

Trimetallic-organic framework/MXene composite as an oxygen evolution reaction electrocatalyst with elevated intrinsic activity

“…35 The inclusion of multi-metallic elements in catalysts boosts the availability of additional electrons from adjacent atoms while also increasing the number of active sites. [38][39][40][41][42][43] Li et al suggested that more exposed and accessible active sites in trimetallic MILs (MIL stands for Materials of Institute Lavoisier) result from multi-metallic centers, which demonstrated improved OER activity. 40 Niu et al created a hierarchical Ni-Co-Fe hydr(oxy)oxide@NiCo LDH yolkshelled structures beginning from MIL-88A as an effective OER electrocatalyst, and beneting from the structural advantages and synergistic effects of the Ni, Co, and Fe elements.…”

Polyoxometalates@Metal‐Organic Frameworks Derived Bimetallic Co/Mo2C Nanoparticles Embedded in Carbon Nanotube‐Interwoven Hierarchically Porous Carbon Polyhedron Composite as a High‐Efficiency Electrocatalyst for Al–S Batteries

“…[1][2][3] Among them, aluminum ion batteries (AIBs) stand out due to their high volume and mass capacity, abundance of Al resources, and cost-effectiveness. [4][5][6][7] Currently, a variety of materials such as carbon materials, [8][9][10][11] metal oxides, [12][13][14][15] and metal sulfides [16][17][18][19][20] have been used for the AIBs cathode. However, most of these materials are embedded-type DOI: 10.1002/smll.202304515 with limited discharge-specific capacity because Al carries three electrons and has a strong electrostatic force with the material.…”