An electrochemically induced bilayered structure facilitates long-life zinc storage of vanadium dioxide

Abstract

VO2 is firstly employed as high-performance zinc ion battery cathode material and in detail investigated its electrochemical zinc-storage mechanism.

In Situ Ag Nanoparticles Reinforced Pseudo‐Zn–Air Reaction Boosting Ag2V4O11 as High‐Performance Cathode Material for Aqueous Zinc‐Ion Batteries

“…Here, as shown in Figure b, the b ‐value of six peaks are 0.99, 0.76, 1, 0.9, 0.87, and 0.88, respectively, which indicates the mainly capacitor‐like kinetic. To further understand the kinetic of the battery, one can quantitatively separate the contribution of the two different processes, diffusion control and capacitive contribution, as the following equation i ( V ) = k 1 v + k 2 v 1/2 . Finally the capacitor‐like kinetics contribute more than 88% capacity at 0.5 mV s −1 , as shown in Figure c, which is in favor of high‐rate performance.…”

Mechanistic Investigation of a Hybrid Zn/V2O5 Rechargeable Battery with a Binary Li+/Zn2+ Aqueous Electrolyte

“…On the basis of this pioneering work, studies have been extended to hydrated compounds such as V 2 O 5 ⋅ n H 2 O, V 3 O 7 ⋅ H 2 O, V 10 O 24 ⋅ 12 H 2 O, Mg x V 2 O 5 ⋅ n H 2 O, K 2 V 6 O 16 ⋅ 2.7 H 2 O, Ca 0.25 V 2 O 5 ⋅ n H 2 O, Na 2 V 6 O 16 ⋅ 3 H 2 O, and Fe 5 V 15 O 39 (OH) ⋅ 9.9 H 2 O . Anhydrous phases such as VO 2 , Zn 2 V 2 O 7 , NH 4 V 4 O 10 , potassium vanadates, and LiV 3 O 8 have also been investigated.…”

“…[3,10,11] [18] and Fe 5 V 15 O 39 (OH)·9.9 H 2 O. [19] Anhydrous phases such as VO 2 , [20] Zn 2 V 2 O 7 , [21] NH 4 V 4 O 10 , [22] potassium vanadates, [23] and LiV 3 O 8 [24] have also been investigated. Surprisingly,t he pristine conventional V 2 O 5 oxide has received less attentiont han its derivatives.…”

Dendrite Growth Suppression by Zn2+‐Integrated Nafion Ionomer Membranes: Beyond Porous Separators toward Aqueous Zn/V2O5 Batteries with Extended Cycle Life

“…Compared with the previously known Zn/MnO 2 nonrechargeable aqueous batteries based on corrosive alkaline electrolytes, discussions regarding the aforementioned system have dominated research in recent years. This has opened up new challenges as well as opportunities in the realization of more efficient aqueous ZIBs (AZIBs) with a variety of other cathode materials . Although other chemistries based on Al/Al 3+ and Mg/Mg 2+ have been proposed, the Zn/Zn 2+ systems are considered to be the leading candidate due to the high theoretical capacity (820 mAh g −1 ), low redox potential (−0.76 V vs standard hydrogen electrode [SHE]), natural abundance, and low cost of Zn metal …”

“…This has opened up new challenges as well as opportunities in the realization of more efficient aqueous ZIBs (AZIBs) with a variety of other cathode materials. [15][16][17][18][19][20][21] Although other chemistries based on Al/Al 3þ and Mg/Mg 2þ have been proposed, [22][23][24] the Zn/Zn 2þ systems are considered to be the leading candidate due to the high theoretical capacity (820 mAh g À1 ), low redox potential (À0.76 V vs standard hydrogen electrode [SHE]), natural abundance, and low cost of Zn metal. [25][26][27][28] Despite the availability of efficient cathode materials, the AZIBs often suffer from severe performance deterioration during prolonged cycling.…”