The state-of-the-art water-in-salt electrolytes exhibit wider electrochemical window than conventional dilute aqueous electrolytes. However, the extended electrochemical stability window via increasing salt concentration has reached a bottleneck. An alternative approach...

Electro-hydraulic servo steering system (EHSSS) is a key technology for heavy vehicles. The traditional EHSSS has high control accuracy but low energy efficiency. Therefore, this paper proposes a novel EHSSS based on independent metering system, which can combine high steering accuracy with high energy efficiency. Firstly, two servo-proportional valves are used to reduce the throttling loss at the meter-out orifice. The servo motor pump is used to keep the pump supply pressure at a low value. Then, to ensure high steering accuracy, a position-velocity-pressure combined control strategy is proposed for easy engineering practice. And a smooth switching strategy is proposed to achieve smooth mode switching at high frequency. Finally, the effectiveness of the proposed method is verified by experiments. The experimental comparison results show that the proposed method can achieve the same accuracy as the valve-controlled steering system with less energy, and can realize smooth mode switching.

In recent years, the development of aqueous lithium‐ion batteries and aqueous zinc‐ion batteries has received extensive attention thanks to the advantages of high safety, environmental friendliness, and easy assembly conditions. However, aqueous batteries are always restricted in terms of limited cycling stability and low energy density due to their intrinsically narrow electrochemical window, hydrogen evolution, and side reactions. These problems can be remarkably alleviated by hybridizing aqueous/non‐aqueous electrolytes; however, few detailed discussions on relevant strategies have been reported. In this mini‐review, we summarize the latest progress and contributions of various hybrid aqueous/non‐aqueous electrolytes for rechargeable aqueous lithium‐ion batteries and aqueous zinc‐ion batteries. The current challenges and development directions are also discussed for hybrid electrolytes.