Aqueous TiO2/Ni(OH)2 rechargeable battery with a high voltage based on proton and lithium insertion/extraction reactions

Abstract

A new aqueous TiO 2 /Ni(OH) 2 rechargeable battery system with a high voltage, consisting of a-phase nickel hydroxides as the cathode and TiO 2 nanotube arrays as the anode, is proposed for the first time. It is a feasible strategy to combine two different reaction mechanisms in an aqueous alkaline electrolyte: proton and lithium insertion/extraction reactions.Lithium-ion batteries (LIBs) are the most successful electrochemical devices with a high energy density in organic electrolytes. However, the safety issue arising from the flammable organic electrolytes handicaps their extensive applications in electric vehicles (EVs) and hybrid electric vehicles (HEVs). As the most ideal electrolyte solvent, water is abundant and friendly to the environment. Alkaline aqueous rechargeable batteries are the most promising power sources, especially for their large-scale application in EVs and HEVs based on the issue of safety. 1,2 In recent years, a new type of rechargeable lithium batteries with intercalation compounds as electrode-active materials in aqueous electrolytes containing Li ions has been proposed 1 and studied extensively, such as VO 2 (B)

Electronic Property Dependence of Electrochemical Performance for TiO2/CNT Core-shell Nanofibers in Lithium Ion Batteries

“…Nanostructured TiO 2 is inexpensive, easy in handling, stable against SEI layer formation and heat in the environment. It also has a small volume change (<4%) during lithium intercalation that mimics the excellent behavior of Li 4 Ti 5 O 12 [14][15][16][17]. The main voltage plateau of TiO 2 against lithium is above 1.54 V, so the material is resistant to electrolyte reaction and subsequent dendritic SEI layer formation, which is one of the major cause for internal cell failure.…”

A Flexible Quasi‐Solid‐State Nickel–Zinc Battery with High Energy and Power Densities Based on 3D Electrode Design

“…By contrast, aqueous rechargeable batteries have attracted tremendous attention for alternative energy storage because of their high safety and low cost . In addition, since the aqueous electrolytes can provide high ionic conductivity, aqueous batteries usually show much better rate performance than lithium ion battery which normally uses organic electrolytes . Among the aqueous rechargeable batteries studied, nickel–zinc (Ni–Zn) battery is of particular interest, while it was invented more than a century ago, owing to the high output voltage (≈1.8 V) as compared to that of other aqueous batteries (mostly ≤1.2 V) .…”

High-performance aqueous rechargeable batteries based on zinc anode and NiCo2O4 cathode

“…In the case of the prepared NiCo 2 O 4 , the oxidation and reduction potential peaks can be observed at 1.1 and 0.9 V (vs. Hg/HgO), respectively, accompanied simultaneously with corresponding proton insertion/extraction reactions. [5][6][7] In the case of Zn, the pair of reversible redox peaks appears at -0.54 and ~ -0.4 V due to Zn dissolution/deposition, respectively. Since there is a potential difference between Zn and NiCo 2 O 4 , they can be assembled into a battery system whose redox reaction during charge and discharge process can be schematically shown as in figure 3a.…”