Nanometer-size Na cluster formation in micropore of hard carbon as origin of higher-capacity Na-ion battery

Carbon coated hollow Na2FePO4F spheres for Na-ion battery cathodes

Carbon coated porous hollow Na2FePO4F (C/Na2FePO4F) spheres with 500 nm diameter and 80 nm wall thickness are synthesized by a one-step template-free ultrasonic spray pyrolysis process using sucrose as the carbon source. Nano-sized porous hollow C/Na2FePO4F spheres allow electrolyte to penetrate into the hollow structure, and thus the electrochemical reaction can take place on both the outside ...

Understanding Na₂Ti₃O₇ as an ultra-low voltage anode material for a Na-ion battery.

An in-depth understanding of Na2Ti3O7 as a Na-ion battery anode is reported. The battery performance is enhanced by carbon coating, due to increased electronic conductivity and reduced solid electrolyte interphase formation. Ti(4+) reduction upon discharge is demonstrated using in situ XAS. The self-relaxation behaviour of the fully intercalated phase is revealed.

SnO2 coated carbon cloth with surface modification as Na-ion battery anode

Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, United States Department of Chemical Engineering and Material Science, University of Southern California, Los Angeles, CA 90089, United States Department of Electrical Engineering, University of California at Los Angeles, Los Angeles, CA 90095, United States King Abdulaziz City for Science and Techno...

Electrochemically Expandable Soft Carbon as Anodes for Na-Ion Batteries

Na-ion batteries (NIBs) have attracted great attention for scalable electrical energy storage considering the abundance and wide availability of Na resources. However, it remains elusive whether carbon anodes can achieve the similar scale of successes in Na-ion batteries as in Li-ion batteries. Currently, much attention is focused on hard carbon while soft carbon is generally considered a poor ...

Supporting Information High capacity, reversible alloying reactions in SnSb/C nanocomopsites for Na-ion battery applications