Yanfeng Yang
Chinese Academy of Sciences
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Yanfeng Yang.
Journal of Materials Chemistry | 2009
Feng Yu; Jingjie Zhang; Yanfeng Yang; Guangzhi Song
Novel porous micro-spherical aggregates of LiFePO4@C nanocomposites have been synthesized in large quantities via an improved sol–gel method combined with spray drying technology (sol–gel-SD method), which required no surfactants or templates. With this new procedure, a precursor was prepared through the process of sol–gel and subsequent spray drying. A series of analyses, including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and a combined system focused ion beam (FIB)/SEM were performed after the as-obtained LiFePO4@C was heat-treated at 700 °C for 12 h. The as-obtained LiFePO4@C had a large specific surface area (20.2 m2g−1), with an average nano-size of 32 nm and a main pore diameter of 45 nm. Contact with electrolyte occurred easily, which facilitated the electrical and lithium ion diffusion. In comparison with nano-sized LiFePO4@C particles prepared by a sol–gel method, the current product presented a high coulombic efficiency of 97.2%, a large reversible capacity of 133.8 mAh/g and an excellent capacity retention rate close to 100% after 50 cycles. The sol–gel-SD method provides an additional strategy to easily deal with gelatin and shows potential for use in the preparation of similar superstructures of other composites.
Journal of Power Sources | 2010
Feng Yu; Jingjie Zhang; Yanfeng Yang; Guangzhi Song
Journal of Power Sources | 2009
Feng Yu; Jingjie Zhang; Yanfeng Yang; Guangzhi Song
Electrochimica Acta | 2009
Feng Yu; Jingjie Zhang; Yanfeng Yang; Guangzhi Song
Journal of Solid State Electrochemistry | 2010
Feng Yu; Jingjie Zhang; Yanfeng Yang; Guangzhi Song
Electrochimica Acta | 2015
Riguo Mei; Yanfeng Yang; Xiaorui Song; Zhenguo An; Jingjie Zhang
Electrochimica Acta | 2015
Riguo Mei; Xiaorui Song; Yan Hu; Yanfeng Yang; Jingjie Zhang
Archive | 2010
Guangzhi Song; Yanfeng Yang; Feng Yu; Jingjie Zhang
Journal of Materials Science | 2007
X. Hao; Yanfeng Yang
Archive | 2010
Shunlong Pan; Guangzhi Song; Yanfeng Yang; Feng Yu; Jingjie Zhang