Novel titanium vanadate with superior Na^(+) transport kinetics for rapid charging and low-temperature sodium ion batteries  

作　　者：Dan Lv Liehao Wei Cheng Wang Mingyue Wang Zhongchao Bai Yameng Fan Dongdong Wang Nana Wang Jian Yang 

机构地区：[1]Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education),School of Materials Science and Engineering,Tianjin University,Tianjin,300072,China [2]Key Laboratory of Colloid and Interface Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Shandong University,Jinan,250100,China [3]Tianjin Key Lab of Indoor Air Environmental Quality Control,School of Environmental Science and Technology,Tianjin University,Tianjin,300072,China [4]Institute for Superconducting and Electronic Materials,University of Wollongong,Wollongong,Australia [5]Institute of Energy Materials Science(IEMS),University of Shanghai for Science and Technology,516 Jungong Road,Shanghai,200093,China

出　　处：《Green Energy & Environment》2025年第2期374-381,共8页绿色能源与环境(英文版)

基　　金：supported by National Nature Science Foundation of China(22105118);Nature Science Foundation of Shandong Provinces(ZR2021QB095);China Postdoctoral Science Foundation(2020TQ0183 and 2021M701979).

摘　　要：Sodium-ion batteries(SIBs)hold great promise for large-scale energy storage in the post-lithium-ion battery era due to their high rate performance and long lifespan,although their sluggish Na^(+) transformation kinetics still require improvement.Encouraged by the excellent electrochemical performance of titanium-based anode materials,here,we present a novel titanium vanadate@carbon(TVO@C)material as anode for SIBs.Our TVO@C material is synthesized via a facile coprecipitation method,with the following annealing process in an acetylene atomosphere.The opened ion channel and the oxygen vacancies within TVO@C facilitate the diffusion of Na^(+) ions,reducing their diffusion barrier.Thus,an ultrahigh rate of 100 A g^(-1)and long life of 10,000 cycles have been achieved.Furthermore,the TVO@C electrode exhibits stable performance,not only at room temperature,but also at temperatures as low as 20 C.The TVO@CjjNa_(3)V_(2)(PO_(4))_(3)@C full cells have also achieved stable discharge/charge for 500 cycles.It is believed that this strategy provides new insight into the development of advanced electrodes and provides a new opportunity for constructing novel high rate electrodes.

关 键 词：Anode High rate Titanium vanadate Sodium ion batteries 

分 类 号：TG1[金属学及工艺—金属学]