%0 Journal Article %A Chu, Chenxiao %A Yang, Jing %A Zhang, Qianqian %A Wang, Nana %A Niu, Feier %A Xu, Xuena %A Yang, Jian %A Fan, Weiliu %A Qian, Yitai %D 2017 %T Biphase-Interface Enhanced Sodium Storage and Accelerated Charge Transfer: Flower-Like Anatase/Bronze TiO2/C as an Advanced Anode Material for Na-Ion Batteries %U https://acs.figshare.com/articles/journal_contribution/Biphase-Interface_Enhanced_Sodium_Storage_and_Accelerated_Charge_Transfer_Flower-Like_Anatase_Bronze_TiO_sub_2_sub_C_as_an_Advanced_Anode_Material_for_Na-Ion_Batteries/5684419 %R 10.1021/acsami.7b13382.s001 %2 https://acs.figshare.com/ndownloader/files/9950512 %K anatase %K material %K capacity %K electrochemical impedance spectra %K sodium-ion batteries %K interface %K Biphase-Interface Enhanced Sodium Storage %K Advanced Anode Material %K mA %K Na-Ion Batteries Flower-like assembly %K bronze TiO 2 %K anode %K performance %X Flower-like assembly of ultrathin nanosheets composed of anatase and bronze TiO2 embedded in carbon is successfully synthesized by a simple solvothermal reaction, followed with a high-temperature annealing. As an anode material in sodium-ion batteries, this composite exhibits outstanding electrochemical performances. It delivers a reversible capacity of 120 mA h g–1 over 6000 cycles at 10 C. Even at 100 C, there is still a capacity of 104 mA h g–1. Besides carbon matrix and hierarchical structure, abundant interfaces between anatase and bronze greatly enhance the performance by offering additional sites for reversible Na+ storage and improving the charge-transfer kinetics. The interface enhancements are confirmed by discharge/charge profiles, rate performances, electrochemical impedance spectra, and first-principle calculations. These results offer a new pathway to upgrade the performances of anode materials in sodium-ion batteries. %I ACS Publications