Spray pyrolysis-deposited nanoengineered TiO 2 thick films for ultra-high areal and volumetric capacity lithium ion battery applications

Haridas, Anupriya K.; Gangaja, Binitha; Srikrishnarka, Pillalamarri; Unni, Gautam E.; Nair, A. Sreekumaran; Nair, Shantikumar V.; Santhanagopalan, Dhamodaran

doi:10.1016/j.jpowsour.2017.01.136

Cited by 35 publications

(18 citation statements)

References 25 publications

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“…The diffraction peaks corresponds to phase‐pure anatase TiO 2 . The prominent peak is of (101) and clearly indicates a good crystallinity of the sample . Figure b shows the Raman spectrum of the sample with intense peaks that can be correlated to anatase TiO 2 and also consistent with the previous reports .…”

Section: Results and Discussiontructural And Morphological Charactersupporting

confidence: 88%

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

et al. 2018

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Titania based anodes have received considerable interest due to its cycling stability and improved safety. Here, we report the electrochemical performance of high surface area anatase TiO2 nanoparticles synthesized via solvothermal technique. Prepared anatase TiO2 nanoparticles were below 15 nm in average particle size exhibiting high surface area of 251 m2/g and titanium existing in 4+ oxidation state. The electrodes studied by limiting the discharge voltage between 1.0 V and 0.01 V showed significant performance differences. Especially, specific capacity, Coulombic efficiency and storage mechanism of TiO2 depends strongly on lithiation voltage cut‐off limit that is discussed in detail. It was established that discharging to 1.0 V showed better performance hence, subsequent studies the lithiation (discharge) was limited to 1.0 V. High rate capability of the electrodes were tested test up to 60 C and long cycle stability up to 1000 cycles (at 10 C rate). As an energy storage solution, a 2.0 V full‐cell Li‐ion battery was fabricated with the TiO2 nanoparticles as anode against surface modified LiCoO2 as cathode. The full‐cell delivered specific capacities about 165 mAh/g and 105 mAh/g at current densities of 150 mA/g and 3765 mA/g respectively. It also exhibited 126 mAh/g capacity and 85% retention at the end of 100 cycles at a current density of 1000 mA/g. The full‐cell delivered a maximum power density of 5.5 kW/kg and a corresponding energy density of 185 Wh/kg.

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Section: Results and Discussiontructural And Morphological Charactersupporting

confidence: 88%

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

et al. 2018

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“…Among metal oxides, there are several reports on TiO 2 coated LiCoO 2 . TiO 2 is much attractive due to its low cost, good structure and thermal stability, large surface area etc . making it a potential material for surface coating …”

Section: Introductionmentioning

confidence: 99%

Ultrathin TiO₂ Coating on LiCoO₂ for Improved Electrochemical Performance as Li–Ion Battery Cathode

2018

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Surface modification of LiCoO2 (LCO) gained much attention as it could play a prominent role in improving electrochemical performance and structural stability. Herein, we report an ultra‐thin TiO2 coating on LiCoO2 (LCO‐TiO2) as a potential candidate to overcome the electrochemical, structural instability and interface issues of the bare‐LCO. The structural properties as well as electrochemical performances of bare‐LCO and LCO‐TiO2 were investigated by X‐Ray diffraction, Transmission Electron Microscopy (TEM), X‐ray Photoelectron Spectroscopy (XPS), Galvanostatic charge‐discharge and electrochemical impedance spectroscopy (EIS). At the end of 100 cycles, 1C rate capacity retention was about 50% and 90% for bare‐LCO and LCO‐TiO2 respectively. Rate studies showed that the bare LCO exhibited a specific capacity of ∼120 mAh/g and only 16 mAh/g at 1C and 60 discharge rates respectively whereas, the TiO2 coated LCO showed a capacity of ∼132 mAh/g and nearly 98 mAh/g at 1C and 60C discharge rates respectively. The implementation of TiO2 coating over LiCoO2 enhanced the electrochemical performance, cell stability as well as efficiency.

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“…Lithium‐ion batteries (LIBs), as excellent energy storage devices, are being widely used in electronic devices, electric vehicles and hybrid electric vehicles due to their high energy density . Generally speaking, a LIB is composed of cathode, anode, separator and electrolyte, and cathode material is of prime importance when developing high performance LIBs.…”

Section: Introductionmentioning

confidence: 99%

Synergy of Nyquist and Bode Electrochemical Impedance Spectroscopy Studies to Assess the Effect of Morphology on the Electrochemical Properties of Li‐Ni‐Mn‐Al‐O Materials

et al. 2017

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The agglomerated and sheet Li1.2Ni0.3Mn0.6Al0.1O2.2 materials were synthesized by hydrothermal method (HT‐NMA) and sol‐gel method (SG‐NMA) respectively. Compared with sheet particles, agglomerated particles had better mutual contact. The specific surface area calculated by Brunauer–Emmett–Teller (BET) method was 8.92 m2/g for HT‐NMA and 5.90 m2/g for SG‐NMA. Larger specific surface area achieved better connections between cathode material and conductive agent. Better electron transitivity contributed to better electrochemical performance of HT‐NMA, at the potential range of 2.0 V–4.8 V, the retention of capacity was 86 % at the current density of 20 mA/g after 31 cycles and the discharge capacity was 108mAh/g at the current density of 1000 mA/g. Both Nyquist and Bode plots were used to deeply investigate the reason for better performance of HT‐NMA, the results showed that agglomerated particles had better electron migration capacity both before and after cycle.

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Spray pyrolysis-deposited nanoengineered TiO 2 thick films for ultra-high areal and volumetric capacity lithium ion battery applications

Cited by 35 publications

References 25 publications

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Ultrathin TiO₂ Coating on LiCoO₂ for Improved Electrochemical Performance as Li–Ion Battery Cathode

Synergy of Nyquist and Bode Electrochemical Impedance Spectroscopy Studies to Assess the Effect of Morphology on the Electrochemical Properties of Li‐Ni‐Mn‐Al‐O Materials

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Spray pyrolysis-deposited nanoengineered TiO 2 thick films for ultra-high areal and volumetric capacity lithium ion battery applications

Cited by 35 publications

References 25 publications

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO2 Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO2 Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Ultrathin TiO2 Coating on LiCoO2 for Improved Electrochemical Performance as Li–Ion Battery Cathode

Synergy of Nyquist and Bode Electrochemical Impedance Spectroscopy Studies to Assess the Effect of Morphology on the Electrochemical Properties of Li‐Ni‐Mn‐Al‐O Materials

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Product

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Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Effect of Lithiation Voltage Limit on the Electrochemical Performance of High Surface Area Anatase TiO₂ Nanoparticles and Its Application in Full‐Cell Li–Ion Battery

Ultrathin TiO₂ Coating on LiCoO₂ for Improved Electrochemical Performance as Li–Ion Battery Cathode