Interfacial Defect Engineering for Improved Portable Zinc–Air Batteries with a Broad Working Temperature

Abstract

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Defect Engineering on Electrode Materials for Rechargeable Batteries

“…Yan and co‐workers recently reported defective NiO/CoO transition interface nanowires exhibited high electrical activity and durability for Zn–air batteries. The theoretical calculations demonstrated that superior OER/ORR activity resulted from electron‐rich interface regions and defect sites, which led to a high redox rate with a lower activation barrier for rapid electron transfer . Zhang et al prepared defective SnS 2 /SnO nanosheets as anode for Li‐ion batteries to promote the lithium ions and electron diffusion kinetics.…”

“…At present, many studies have used defect engineering to improve the conductivity and surface area of transition metal oxides, the introduction of vacancy defects has important practical value for Zn–air battery electrode materials . Recently, Guo and co‐workers reported inducing oxygen vacancy in Co 3 O 4 hollow particles with maintaining the integrity of hierarchically porous carbon microstructure through a Kirkendall diffusion process ( Figure a) .…”

Redox‐Inert Fe3+ Ions in Octahedral Sites of Co‐Fe Spinel Oxides with Enhanced Oxygen Catalytic Activity for Rechargeable Zinc–Air Batteries

“…Xiao-Tong Wang,Ting Ouyang,Ling Wang,Jia-Huan Zhong,Tianyi Ma,* and Zhao-Qing Liu* Abstract: Bimetallic cobalt-based spinel is sparking much interest, most notably for its excellent bifunctional performance.H owever,t he effect of Fe 3+ doping in Co 3 4 nanoparticles grown on Ndoped carbon nanotubes (NCNTs) is designed, which exhibits superior performance to state-of-the-art noble metal catalysts. Theoretical calculations and magnetic measurements reveal that the introduction of Fe 3+ ions into the Co 3 O 4 network causes delocalization of the Co 3d electrons and spin-state transition.…”

“…[1,2] Nevertheless,the long-term stability and intrinsic oxygen reduction reaction (ORR)/oxygen evolution reaction (OER) activities of the catalysts are the key to realize the reversible and durable operation of zinc-air batteries.T odate,Pt-and Ir-based compounds are recognized as the most efficient ORR and OER catalysts,but their largescale applications are hampered by the high cost and scarcity of noble metals. [3][4][5] Therefore,itisstill aformidable challenge to develop earth-abundant, stable,a nd efficient ORR/OER electrocatalysts.…”

A Flexible Rechargeable Zinc–Air Battery with Excellent Low‐Temperature Adaptability

“…Flexible ZABs are one of the most promising flexible battery candidates owing to their high theoretical energy storage density (both gravimetric and volumetric energy densities), superior safety, and cost‐effectiveness . However, one paramount limitation is that due to the electrocatalysis‐based working principle and the aqueous nature of such ZABs, their overall electrochemical performances (capacity and energy efficiency) and their flexibility severely deteriorate (even being damaged) at low temperatures in practical usage scenarios . The unique semi‐opened configuration (which is more sensitive to temperature changes) makes ZAB the most susceptible and vulnerable system to a frozen environment.…”