当前位置: X-MOL 学术Adv. Mater. › 论文详情
Boosting Sodium Storage in TiO2 Nanotube Arrays through Surface Phosphorylation
Advanced Materials ( IF 21.95 ) Pub Date : 2018-01-03 , DOI: 10.1002/adma.201704337
Jiangfeng Ni, Shidong Fu, Yifei Yuan, Lu Ma, Yu Jiang, Liang Li, Jun Lu

Abstract

Sodium-ion batteries (SIBs) offer a promise of a scalable, low-cost, and environmentally benign means of renewable energy storage. However, the low capacity and poor rate capability of anode materials present an unavoidable challenge. In this work, it is demonstrated that surface phosphorylated TiO2 nanotube arrays grown on Ti substrate can be efficient anode materials for SIBs. Fabrication of the phosphorylated nanoarray film is based on the electrochemical anodization of Ti metal in NH4F solution and subsequent phosphorylation using sodium hypophosphite. The phosphorylated TiO2 nanotube arrays afford a reversible capacity of 334 mA h g−1 at 67 mA g−1, a superior rate capability of 147 mA h g−1 at 3350 mA g−1, and a stable cycle performance up to 1000 cycles. In situ X-ray diffraction and transmission electron microscopy reveal the near-zero strain response and robust mechanical behavior of the TiO2 host upon (de)sodiation, suggesting its excellent structural stability in the Na+ storage application.

Thumbnail image of graphical abstract

TiO2 nanotube arrays on Ti substrate functionalized by surface phosphorylation are directly adapted as efficient anodes for sodium-ion batteries. Benefiting from synergy of unique nanotube structure, 3D array architecture, and high surface reactivity, the TiO2 arrays afford a high reversible capacity of 334 mA h g−1 and a superior rate capability of 147 mA h g−1 at 3350 mA g−1.

更新日期:2018-01-03

 

分享到
评论: 0
期刊列表
第三军医大学组织器官再生工程研究中心人才引进及工作人员招聘
广州大学胡春教授团队招聘科研秘书和特聘工程师
深圳格拉布斯研究院研究序列教授和工程师招聘启事
北京理工大学青年千人课题组联合招聘硕士生、博士生以及博士后人员(合成化学和材料方向)
天合科研
肠道菌群相关课题设计及研究策略专题会议
会议通知 | ACS全球科技研讨会:化学与生命科学前沿
【问答】请问如何判断一个新物质的分子极性?
2017年中科院JCR分区化学大类列表
试剂库存管理
化合物查询
down
wechat
bug