Premium
Processable and Moldable Sodium‐Metal Anodes
Author(s) -
Wang Aoxuan,
Hu Xianfei,
Tang Haoqing,
Zhang Chanyuan,
Liu Shan,
Yang YingWei,
Yang QuanHong,
Luo Jiayan
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201703937
Subject(s) - anode , materials science , composite number , graphene , plating (geology) , electrolyte , oxide , lithium (medication) , composite material , sodium , electrode , chemical engineering , metallurgy , nanotechnology , chemistry , medicine , endocrinology , geophysics , geology , engineering
Sodium‐ion batteries are similar in concept and function to lithium‐ion batteries, but their development and commercialization lag far behind. One obstacle is the lack of a standard reference electrode. Unlike Li foil reference electrodes, sodium is not easily processable or moldable and it deforms easily. Herein we fabricate a processable and moldable composite Na metal anode made from Na and reduced graphene oxide (r‐GO). With only 4.5 % percent r‐GO, the composite anodes had improved hardness, strength, and stability to corrosion compared to Na metal, and can be engineered to various shapes and sizes. The plating/stripping cycling of the composite anode was significantly extended in both ether and carbonate electrolytes giving less dendrite formation. We used the composite anode in both Na‐O 2 and Na‐Na 3 V 2 (PO 4 ) 3 full cells.