首页|Nitrogen-doped/carbon-coated 2D TiO_2 Scaly clusters as high-performance anode for Lithium-ion batteries
Nitrogen-doped/carbon-coated 2D TiO_2 Scaly clusters as high-performance anode for Lithium-ion batteries
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Springer Nature
TiO_2 has been considered as a promising anode material for lithium-ion batteries (LIBs) due to its low cost and high stability, but its low conductivity has greatly limited its application. In this study, the nitrogen-doped TiO_2 (N-TiO_2) with a uniform carbon coating was prepared by the solvothermal method. According the XPS results, the nitrogen was successfully doped in the TiO_2. The N-doped TiO_2 electrode exhibited obviously higher lithium-ion storage performance, of which the discharge capacity was 420 mAh g~(-1) under the current density 0.1 A g~(-1). Additionally, the superior long-term cycling stability was also observed with a reversible capacity of 148 mAh g~(-1) after 3000 cycles under 3 A g~(-1) current density. The result showed that after the nitrogen doped, the replacing of lattice oxygen with nitrogen can decrease the band-gap width and improve the conductivity of titanium oxide. Meanwhile, the oxygen vacancies on the surface of the material can adsorb a large number of lithium ions and produce significant pseudo-capacitance, thus, effectively increasing the specific capacity of the material. Therefore, the N-doped TiO_2 electrode can present obviously higher lithium-ion storage performance.
Jing-Jing Sun、Cai-Xia Lei、Ze-Yang Li、Min-Kun Jian、Ji-Qiong Lian、Li-Li Ma、Wei-Hao Du
展开 >
Fujian Provincial Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Xiamen 361024, People's Republic of China
NETL
NSTL
Springer Nature
