Publications by authors named "Bei-Er Jia"

Article Synopsis
  • - The electroreduction of nitrate to ammonia is a promising green alternative to the traditional Haber-Bosch method, but achieving high selectivity and complete conversion remains challenging.
  • - Researchers developed adjustable CuO@CoO yolk-shell nanocubes that enhance the conversion of nitrate (NO-N) to ammonia (NH-N) efficiently with over 99% Faradaic efficiency and good stability.
  • - This system demonstrated impressive results in various concentrations of nitrate electrolytes, achieving more than 99.8% efficiency at low cell voltages (1.9-2.3 V).
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The energy transition to renewables necessitates innovative storage solutions beyond the capacities of lithium-ion batteries. Aluminum-ion batteries (AIBs), particularly their aqueous variants (AAIBs), have emerged as potential successors due to their abundant resources, electrochemical advantages, and eco-friendliness. However, they grapple with achieving their theoretical voltage potential, often yielding less than expected.

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A stable anode-free lithium metal battery (AFLMB) is accomplished by the adoption of a facile fabricated amorphous antimony (Sb)-coated separator (SbSC). The large specific surface area of the separator elevates lithium (Li)-Sb alloy kinetic, improving Li wetting ability on pristine copper current collector (Cu). When tested with LiNi Mn Co O (NMC811) as cathode, the full cell with SbSC demonstrates low nucleation overpotential with compact, dendrite-free and homogeneous Li plating, and exhibits a notable lithium inventory retention rate (LIRR) of 99.

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The high cost and scarcity of lithium resources have prompted researchers to seek alternatives to lithium-ion batteries. Among emerging "Beyond Lithium" batteries, rechargeable aluminum-ion batteries (AIBs) are yet another attractive electrochemical storage device due to their high specific capacity and the abundance of aluminum. Although the current electrochemical performance of nonaqueous AIBs is better than aqueous AIBs (AAIBs), AAIBs have recently gained attention due to their low cost and enhanced safety.

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Aqueous aluminum metal batteries (AMBs) are regarded as one of the most sustainable energy storage systems among post-lithium-ion candidates, which is attributable to their highest theoretical volumetric capacity, inherent safe operation, and low cost. Yet, the development of aqueous AMBs is plagued by the incapable aluminum plating in an aqueous solution and severe parasitic reactions, which results in the limited discharge voltage, thus making the development of aqueous AMBs unsuccessful so far. Here, we demonstrate that amorphization is an effective strategy to tackle these critical issues of a metallic Al anode by shifting the reduction potential for Al deposition.

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An integrated system has been provided with a-Si/H solar cells as energy conversion device, NiCoO battery-supercapacitor hybrid (BSH) as energy storage device, and light emitting diodes (LEDs) as energy utilization device. By designing three-dimensional hierarchical NiCoO arrays as faradic electrode, with capacitive electrode of active carbon (AC), BSHs were assembled with energy density of 16.6 Wh kg, power density of 7285 W kg, long-term stability with 100% retention after 15,000 cycles, and rather low self-discharge.

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Tin diselenide (SnSe ), as an anode material, has outstanding potential for use in advanced lithium-ion batteries. However, like other tin-based anodes, SnSe suffers from poor cycle life and low rate capability due to large volume expansion during the repeated Li insertion/de-insertion process. This work reports an effective and easy strategy to combine SnSe and carbon nanotubes (CNTs) to form a SnSe /CNTs hybrid nanostructure.

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