期刊
Nanoscale

标题
Novel sodium/lithium-ion anode material based on ultrathin Na2Ti2O4(OH)2 nanosheet

作者
Yuping Zhang, Lin Guo and Shihe Yang

摘要
Ultrathin Na2Ti2O4(OH)2 nanosheets of ∼8 nm thickness were prepared by a facile method for the first time. The resulting material was also used as a conducting agent and binder-free anode, both for sodium-ion batteries and lithium-ion batteries, for the first time. The Na2Ti2O4(OH)2 nanosheets exhibited excellent Na/Li-ion storage performance. A long-term cycling performance of the ultrathin Na2Ti2O4(OH)2 nanosheets of 120 mA h g−1 at ∼10C was retained after 500 cycles for sodium-ion batteries, and 150 mA h g−1 at ∼1C was kept after 500 cycles for lithium-ion batteries. By comparison, the Na-ion storage performance is much better than the Li-ion storage performance of the Na2Ti2O4(OH)2 nanosheets anode, because of the existence of Na in the Na2Ti2O4(OH)2 host.

原文链接
http://pubs.rsc.org/en/content/articlelanding/2015/nr/c5nr03076e