The electrochemical aluminum storage of anatase TiO 2 nanotube arrays in AlCl 3 aqueous solution is investigated. It is firstly demonstrated that aluminum ions can be reversibly inserted/ extracted into/from anatase TiO 2 nanotube arrays in AlCl 3 aqueous solution due to the small radius steric effect of aluminum ions, indicating a potential application in aluminum ion batteries.

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This review summarizes the recent progress of DPP-based conjugated materials, including small molecules and conjugated polymers, for application in non-fullerene organic solar cells.

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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)