TY - JOUR
AU - Shaikshavali Petnikota
AU - Rodney Chua
AU - Karunakara Moorthy Boopathi
AU - Rohit Satish
AU - Francesco Bonaccorso
AU - Vittorio Pellegrini
AU - Madhavi Srinivasan
AB - <p><span>We design Al-doped V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;(Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>) compounds as cathodes of aluminium battery. A citric acid-assisted simple solid-state synthesis is used to produce Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;compounds by heating, at different temperature, a reaction mixture of NH</span><sub><span>4</span></sub><span>VO</span><sub><span>3</span></sub><span>, Al(NO</span><sub><span>3</span></sub><span>)</span><sub><span>3</span></sub><img src="https://ej.iop.org/icons/Entities/centerdot.gif" alt="centerdot" align="absmiddle" /><span>9H</span><sub><span>2</span></sub><span>O and citric acid under Ar flow. Al-doping in-between layers and at lattice sites of V</span><span>2</span><span>O</span><span>3</span><span>&nbsp;is confirmed by structural, vibrational and chemical analyses. The doped compounds obtained at 600 °C and 800 °C are confirmed as Al</span><sub><span>0.56</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;and Al</span><sub><span>0.53</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;corresponding to theoretical capacities 488 and 490 mAh g</span><sup><span>−1</span></sup><span>, respectively, for the extraction of doped Al by considering three electron transfer (Al/Al</span><sup><span>3+</span></sup><span>). The as-synthesized Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;compounds are tested as cathodes in aluminium battery with 1.0 M AlCl</span><sub><span>3</span></sub><span>:[EMIM]Cl electrolyte. The electrodes of Al</span><sub><span>0.56</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;and Al</span><sub><span>0.53</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;exhibited the first charge capacity of 415 and 385 mAh g</span><sup><span>−1</span></sup><span>, respectively. The electrochemical extraction of doped Al is confirmed by comparisons with bare V</span><span>2</span><span>O</span><span>3</span><span>&nbsp;control cathodes and post-cycling structural studies. The extraction of doped Al from Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;indicates its promising use in high capacity cathode for Al-ion battery.</span></p>
BT - Journal of The Electrochemical Society
DA - 06/2020
DO - 10.1149/1945-7111/ab971e
IS - 10
LA - eng
N2 - <p><span>We design Al-doped V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;(Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>) compounds as cathodes of aluminium battery. A citric acid-assisted simple solid-state synthesis is used to produce Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;compounds by heating, at different temperature, a reaction mixture of NH</span><sub><span>4</span></sub><span>VO</span><sub><span>3</span></sub><span>, Al(NO</span><sub><span>3</span></sub><span>)</span><sub><span>3</span></sub><img src="https://ej.iop.org/icons/Entities/centerdot.gif" alt="centerdot" align="absmiddle" /><span>9H</span><sub><span>2</span></sub><span>O and citric acid under Ar flow. Al-doping in-between layers and at lattice sites of V</span><span>2</span><span>O</span><span>3</span><span>&nbsp;is confirmed by structural, vibrational and chemical analyses. The doped compounds obtained at 600 °C and 800 °C are confirmed as Al</span><sub><span>0.56</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;and Al</span><sub><span>0.53</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;corresponding to theoretical capacities 488 and 490 mAh g</span><sup><span>−1</span></sup><span>, respectively, for the extraction of doped Al by considering three electron transfer (Al/Al</span><sup><span>3+</span></sup><span>). The as-synthesized Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;compounds are tested as cathodes in aluminium battery with 1.0 M AlCl</span><sub><span>3</span></sub><span>:[EMIM]Cl electrolyte. The electrodes of Al</span><sub><span>0.56</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;and Al</span><sub><span>0.53</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;exhibited the first charge capacity of 415 and 385 mAh g</span><sup><span>−1</span></sup><span>, respectively. The electrochemical extraction of doped Al is confirmed by comparisons with bare V</span><span>2</span><span>O</span><span>3</span><span>&nbsp;control cathodes and post-cycling structural studies. The extraction of doped Al from Al</span><sub><span>x</span></sub><span>V</span><sub><span>2</span></sub><span>O</span><sub><span>3</span></sub><span>&nbsp;indicates its promising use in high capacity cathode for Al-ion battery.</span></p>
PY - 2020
EP - 100514
ST - J. Electrochem. Soc.
T2 - Journal of The Electrochemical Society
TI - An Insight into the Electrochemical Activity of Al-doped V<sub>2</sub>O<sub>3</sub>
VL - 167
ER -