Strong interfacial energetics between catalysts and current collectors in aqueous sodium–air batteries

Abstract

Conventional binders, such as polyvinylidene fluoride, are not ideal candidates for aqueous sodium-air batteries (SABs) because of their relatively low adhesiveness, weak mechanical strength, and inherent hydrophobicity. The low adhesion...

Understanding the Role of a Water-Soluble Catechol-Functionalized Binder for Silicon Anodes by Diverse In Situ Analyses

“…This structure provides superior structural integrity and mechanical strength that can withstand external stresses caused by Si nanoparticle (SiNPs) volume expansion. , The DMA units promote strong adhesion between the active material, the conductive agent, and the current collector. The strong adhesive nature of DMA is derived from its catechol functional groups, which are found in mussels, and are a well-known natural adhesive. , The abundant catechol groups in DMA form strong hydrogen bonds between silanol groups on Si particles , or coordination bonds with inorganic surface and the copper current collector, , thus providing stronger interaction between the active material, conductive agent, and current collector than conventional binders. The PEG units enhance the conductivity of Li + ions by transporting Li-ions between their polymer chains.…”

“…The strong adhesive nature of DMA is derived from its catechol functional groups, which are found in mussels, and are a well-known natural adhesive. 31,32 The abundant catechol groups in DMA form strong hydrogen bonds between silanol groups on Si particles 33,34 or coordination bonds with inorganic surface 35 and the copper current collector, 36,37 thus providing stronger interaction between the active material, conductive agent, and current collector than conventional binders. The PEG units enhance the conductivity of Li + ions by transporting Li-ions between their polymer chains.…”

“…42,43 In addition, a peak corresponding to an aromatic CC stretching vibration at approximately 1550 cm −1 was observed. 44 The strong peaks associated with −OH and CC stretching vibrations clearly show the presence of catechol functional groups that can bind strongly to various surfaces, 35 as shown in Scheme 1. In the case of PEG we observed peaks at 2860 and 1050 cm −1 that respectively correspond to −CH stretching and −CO stretching of polyether groups.…”

Approaches to construct high-performance Mg–air batteries: from mechanism to materials design

“…Metal oxide materials represent a large series of cathode electrocatalysts that are considered to be as good as non-precious metal catalysts. 136 In general, these materials are fairly stable in neutral electrolytes, making these materials suitable for Mg–air battery cathodes. 137–139 Their outstanding advantages usually include ease of preparation, low cost, and environmental friendliness.…”

Prussian Blue‐Type Sodium‐ion Conducting Solid Electrolytes for All Solid‐State Batteries

“…[1,2] However, the limited availability of lithium (Li) resources in the Earth's crust, coupled with a sudden increase in the cost of Li precursors (e.g., Li 2 CO 3 and LiOH) and their uneven distribution across geological regions, poses significant challenges. [3][4][5][6][7] In addition, there are ongoing safety concerns regarding LIBs due to the potential risk of explosions and fire associated with the use of flammable organic liquid electrolytes. [8,9] These issues have precipitated the emergence of all-solid-state sodiumion batteries (ASNBs) as a promising alternative that can address both cost and safety concerns.…”