纳米材料应用PPT

There was no statistically significant difference in cytotoxicity of two kinds of nanocrystalline films in vitro, and it was found that in vitro cytotoxicity levels were Ⅰ, which met the requirements of clinical application.
Toxicity discussion
Part two
Introduction HIGHLIGHTS • A new porous structured anatase TiO2 nanobundles (PTNBs) is synthesized. • The synthetics strategy is green and the formation mechanism is • The PTNBs exhibits high lithium discussed. storage capacity and better rate capability. • Sustainable and safer Li-ion full battery of PTNBs/LiNixMn2-xO4 are presented.
Part three
Experimental
Synthesis of PTNBs
1.0g industrial-grade TiO2 powders 70mL 10.0M NaOH solution
stirred for 4h thermally treated cooling down to the at 180°C for 24h room temperature powders
Safety and application of nanoTiO2
based on sustainable electrodes
Part one
『第一PPT』— PPT模板 PPT素材免费下载
Catalogue
W W W . 1 P P T. C O M
Introduction
Experimental Results and discussion Conclusions
thermally treated kept stirring at 180° C for 4h for 30min 500° C for 4h the product of PTNBs
70mL 1.0M acetic acid solution
Synthesis of Electrode
the sol-gel method
Part six
Toxicity discussion
toxicity of nano-TiO2
The negative control was DMEM/F12 (20%FBS) medium, the positive control was volume fraction containing 0. 64% phenol DMEM/F12 (20%FBS) cell culture medium.
Fig. 1 The morphology of cells cultured 72 h for the extraction of 3 days and 60 days
The HUVEC were cultured to the end of logarithmic growth, and the cells were digested with pancreatic enzymes, then diluted into 1x104 per milliliter cell suspensions by cell culture solution.
Lithium storage capability of PTNBs
Fig.2. (a) Voltagevs. Capacity profiles and (b) Cycle performance , coulombic efficiency of PTNBs in lithium battery. (c) A rough comparative capacity of TiO2based anode in previous literature at the rate of 0.5C.
Part four
Results and discussion
Sustainable full batteries
Fig. 4. (a) Voltage vs. capacity profiles of PTNBs/LiMn2O4 full battຫໍສະໝຸດ Baidury and (b) its cycle performance at 100mA ganode−1. Inset of (b) is the typical dQ/dV-V curve of PTNBs/LiMn2O4 within the work voltage of 1.5–4.0V. Fig. 6. Voltage vs. capacity profiles and rate capabilities of (a, b) PTNBs/LiMn2O4 and (c, d) PTNBs/LiNi0.5Mn1.5O4 full batteries at the current densities of 100–1600mA ganode−1.
Fig. 5. (a) Voltage vs. capacity profiles of PTNBs/LiNi0.5Mn1.5O4 full batteryand (b) its cycle performance at100mA ganode−1. Inset of (b) is the typical dQ/dV-V curve of PTNBs/LiNi0.5Mn1.5O4 within the work voltage of 2.0–4.0V.
Punched into circular electrode
Punched into circular electrode
drying at 120° C for 12h
Anode
Cathode
Part four
Results and discussion
Features of PTNBs
Fig. 1. (a) XRD pattern, (b) SEM images, (c) TEM and (d) HRTEM images of PTNBs. Insert of (a) is the typical crystalline structure of anatase TiO2. (e) Nitrogen adsorption-desorption isotherm and (f) pore size distribution of the PTNBs.
Lithium storage capability of PTNBs
Fig. 3. Voltage vs. capacity profiles of PTNBs (a) under the current densities of 100–3200mAg−1 and (b) at the 1000mAg−1. (c) Corresponding rate capability and cyclic performance of PTNBs in lithium battery. (d)A rough comparative rate capacity of TiO2-based anode in previous literature.
Homogeneously mixed in water
Homogeneously mixed in water
form a slurry
casted on the copper foil
form a NMP
casted on the copper foil
drying at 80° C overnight
(i) a fast decrease in potential starting from the open-circuit voltage (OCV) to1.75V caused by the surface reactions; (ii) a plateau region around 1.75V, corresponding to the Li+ intercalation into the crystalline channel of TiO2 (xLi+ + xe − + TiO2 → LixTiO2); (iii) a gradual decay edtail after the voltage plateau region, resulting from the deposition of lithium on electrode surface (Li+ +e − → Li)
Part five
Conclusions
A green and convenient hydrothermal strategy starting from the industrial TiO2 powders was developed to synthesis a porous structured anatase TiO2 nanobundles (PTNBs), and it successfully avoids the using of high-cost and harmful organic titanium compounds, which is feasible for a large-scalable production. The PTNBs can be used as a sustainable anode in lithium (ion)battery, and it exhibits an extremely high lithium storage ability of 296mAh g−1 at 100mAg−1, stable cycle performance over500 cycles and robust rate capability better thanmostTiO2based materials. Besides, sustainable and safer full LIBs of PTNBs/ LiNixMn1xO4 (x=0, 0.5) were configured. The designed batteries have the characteristic of sustainability, and it can deliver high energy capacities satisfying diverse requirements in energy storage systems. The convenient strategy, unique structure and properties of PTNBs have high potential for wider applications, while the concept using sustainable electrodes and seeking reliable system is attractive in energy storages for developing advanced and safe batteries towards commercialization.
The active materials of PTNBs
Super P : 1.5 :
PAA 0.5 :
CMC 0.5
LiNixMn2-xO4 cathode
Super P : 0.5 :
graphite 0.5 :
PVDF 0.5
the mass ratio 7.5
the mass ratio 8.5