Oleylamine-assisted hydrothermal synthesis of ultrasmall NbOx nanoparticles and their in situ conversion to NbOx@C with highly reversible lithium storage

2015 ◽  
Vol 3 (4) ◽  
pp. 1396-1399 ◽  
Author(s):  
Yong Cai ◽  
Xiu Li ◽  
Lei Wang ◽  
Haiyan Gao ◽  
Yongnan Zhao ◽  
...  

NbOx@C nanoparticles have been successfully synthesized through the oleylamine-mediated hydrolysis of niobium(v) chloride and, when tested as anode materials, could deliver about 298 mA h g−1 after 200 cycles at 100 mA g−1.

2018 ◽  
Vol 6 (16) ◽  
pp. 7070-7079 ◽  
Author(s):  
Long Pan ◽  
Zheng-Wei Zhou ◽  
Yi-Tao Liu ◽  
Xu-Ming Xie

A universal strategy is proposed for thein situsynthesis of TiO2(B) nanosheets on pristine carbon nanomaterials. Benefiting from a remarkable synergistic effect, the resulting nanohybrids exhibit superior high-rate lithium storage performance. In this sense, our strategy may open the door to next-generation, high-power and high-energy anode materials for lithium-ion batteries.


2019 ◽  
Vol 34 (18) ◽  
pp. 3186-3194 ◽  
Author(s):  
Meng-Han Wang ◽  
Huai-Guo Xue ◽  
Sheng-Ping Guo

Abstract


2019 ◽  
Vol 7 (27) ◽  
pp. 16541-16552 ◽  
Author(s):  
Xuefang Xie ◽  
Yang Hu ◽  
Guozhao Fang ◽  
Xinxin Cao ◽  
Bo Yin ◽  
...  

In situ formed hierarchical FeS nanosheets supported by a TiO2/C fibrous backbone exhibit higher rate capability and cycling stability as anode materials for lithium ion batteries.


2017 ◽  
Vol 1 (7) ◽  
pp. 1331-1337 ◽  
Author(s):  
Yuan Liu ◽  
Xiaodong Yan ◽  
Jinle Lan ◽  
Yunhua Yu ◽  
Xiaoping Yang ◽  
...  

SnOx-embedded hollow/porous carbon nanofibers are designed by using a phase-separation mechanism, and exhibit excellent lithium-storage properties.


1961 ◽  
Vol 38 (4) ◽  
pp. 545-562 ◽  
Author(s):  
L. Kecskés ◽  
F. Mutschler ◽  
I. Glós ◽  
E. Thán ◽  
I. Farkas ◽  
...  

ABSTRACT 1. An indirect paperchromatographic method is described for separating urinary oestrogens; this consists of the following steps: acidic hydrolysis, extraction with ether, dissociation of phenol-fractions with partition between the solvents. Previous purification of phenol fraction with the aid of paperchromatography. The elution of oestrogen containing fractions is followed by acetylation. Oestrogen acetate is isolated by re-chromatography. The chromatogram was developed after hydrolysis of the oestrogens 'in situ' on the paper. The quantity of oestrogens was determined indirectly, by means of an iron-reaction, after the elution of the iron content of the oestrogen spot, which was developed by the Jellinek-reaction. 2. The method described above is satisfactory for determining urinary oestrogen, 17β-oestradiol and oestriol, but could include 16-epioestriol and other oestrogenic metabolites. 3. The sensitivity of the method is 1.3–1.6 μg/24 hours. 4. The quantitative and qualitative determination of urinary oestrogens with the above mentioned method was performed in 50 pregnant and 9 non pregnant women, and also in 2 patients with granulosa cell tumour.


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