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It could be seen that all these XRD peaks could be indexed as the hexagonal ZnO, consistent with the values in the standard card (JCPDS 36-1451).
The growth units of the ZnO crystals are the complex of in the hydrothermal process, whose coordination numbers of Zn2+ is four.

Next, the pseudocapacitor stores energy by using a change in the number of atoms of the metal existing in the metal oxide of the electrode material or a reduction/oxidation reaction of the conductive polymer (polypyrrole, polyaniline, etc.) [3].
The peaks at angle 2θ of 14.1, 23.10, 24.3, 27.1 and 28.2 correspond to (100), (001), (110), (101) and (200) respectively and are indexed to the hexagonal phase of WO3 (JCPDS card no. 00-0033-1387).

The XRD pattern of the obtained SrWO4 microcrystallines in Fig. 1A-C shows that all the peaks can be indexed as a pure tetragonal scheelite structure (JCPDS card 85-0587) and no other impurities were observed in the products, which confirms that the as-prepared products are SrWO4.
At the present stage, a number of OH- ions selectively adsorbed on different crystallographic planes.

Consequently, to prepare hollow spheres cocci is a good candidate as biotemplates for encapsulation which offers some distinct advantages: firstly, since the abundant functional groups on the cell walls are inherited from the bacteria which are able to bind metal cations or polar molecules through coordination or electrostatic interactions, no surface modification or activation steps are required, which reduces the number of processing steps and saves time.
The XRD pattern of bacteria/ZnO core-shell spheres without calcination in Fig. 1a is similar with that of calcined at 700˚C in Fig. 1b except for lower intensity of the diffraction peaks, comfirming that the shells of the two samples are composed of wurtzite ZnO (JCPDS card NO. 36-1451, a=3.249Å, c=5.206Å) nanocrystals.

All the patterns can be indexed to a single-phase material having an orthorhombic olivine-type structure with space group of Pnma, which is corresponded to the reference LiFePO4 spectrum (JCPDS card NO. 83-2029).
And the LiFePO4/C contained 7%wt PS showed the best electrochemical performance Fig. 4 discharge capacity versus cycle numbers of LiFePO4 cell at 0.1C rate between 2.5 and 4.1V The cyclic voltammetry curves of LiFePO4/C electrodes with different carbon content were shown in Fig.5.

As shown in Fig. 1A, all the diffraction peaks could be well indexed to pure hexagonal phase of ZnIn2S4 (ICSD-JCPDS card No. 01-072-0773).
When the impure ion concentration was low-level, the number of the trapping sites was increased; however, when the impure ion concentration was excessive, the abundant trapping sites as recombination centers could make charge carriers inactive due to be trapped several times.

A number of approaches have been developed to fabricate various structural and morphological Ag/C nanocables[6-10].
All strong peaks marked with black arrows can be indexed to the diffraction of (111), (200), (220) and (311) planes of face-centered cubic (fcc) silver [space group: Fm3m (225)], which really coincided with (JCPDS Card No. 04-0783).

The C-H bending vibration comes around at 847 cm-1and also the corresponding intensity of Bi-S bond (PVA-Bi2S3@CS) are decreased for the reason that the size of Bi2S3 NRs converted into very small size, so easily adsorbed on CSs as shown in Fig.1(d). 3.2 Structural and Morphological Studies The positions and relative intensities of all the peaks are in good conformity with those of the orthorhombic crystal structure of Bi2S3 and are indexed according to JCPDS card number 17-0320.The broadening of the peaks clearly indicates that the size of the product is in Fig. 2: XRD spectrum of Bi2S3 NRs coated on carbon spheres, (a) - without PVP, (b) - low Concentration of PVP, (c) - high concentration of PVP.

The peaks at 2θ = 32.5°, 35.5°, 38.7°, 48.7°, 53.4°, 58.3°, 61.5°, 65.8°, 66.24°, 67.9° can be perfectly indexed to the characteristic diffractions of CuO monoclinic phase (JCPDS Card No. 45-0937).
As shown in Fig. 3a, a large number of CuO nanosheets with high dispersity can be clearly seen in the picture.

There is 7 diffraction peaks (2θ=18.0°, 29.0°, 32.5°, 36.2°, 44.6°, 58.8°and 60.0°) and the corresponding crystal is quartet pyrolusite Mn3O4 (JCPDS card number: 01-1127).