Zana Karim Abdul, Zeqi Nie, Yapeng Zhang, XiuXue Liu, Xiaohu Wang, Niwamanya Gilbert, Donghai Wei, Wen Zhang and Guanhua Zhang
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This unique structure integrates an ultrathin (4 μm), flexible and conductive nickel micromesh (NM) with a high-capacity bimetallic phosphide, NiCoP, fabricated through a combination of photolithography, chemical etching, and electro-deposition processes. The resulting electrode achieves an impressive capacitance of 26.1 μA h cm<small><sup>−2</sup></small> at a current density of 4 mA cm<small><sup>−2</sup></small> in a 2 M KOH electrolyte. When assembled with a superhydrophilic Zn@Al<small><sub>2</sub></small>O<small><sub>3</sub></small>@TiO<small><sub>2</sub></small> anode, the device (3D NM@NiCoP//Zn@Al<small><sub>2</sub></small>O<small><sub>3</sub></small>@TiO<small><sub>2</sub></small>) exhibits outstanding stability, retaining 91% of its initial capacity after 11 000 cycles at 3 mA cm<small><sup>−2</sup></small> in a 2 M KOH electrolyte. 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引用次数: 0
摘要
可充电碱性锌电池因其可负担性、环保性和高能量密度而成为下一代储能系统的有希望的候选者。然而,它们的广泛应用受到稳定性挑战的阻碍,特别是在碱性环境中,由于阴极腐蚀和变形,以及锌阳极的枝晶形成和不必要的副反应。为了解决这些问题,我们成功开发了一种3D镍微网支持的NiCoP (3D NM@NiCoP)电极。这种独特的结构将超薄(4μm),柔性和导电的镍微网(NM)与高容量双金属磷化物NiCoP结合在一起,通过光刻,化学蚀刻和电沉积工艺制造。在2 M KOH电解液中,当电流密度为4 mA cm-2时,电极的电容达到26.1 μAh cm-2。当与超亲水性Zn@Al2O3@TiO2阳极组装在一起时,该器件(3D NM@NiCoP//Zn@Al2O3@TiO2)表现出出色的稳定性,在2 M KOH电解液中,以3 mA cm-2的电流循环11000次后,其初始容量仍保持91%。这种新颖的结构具有可扩展制造的潜力,为开发用于碱性锌电池的高容量和耐用电极提供了有价值的见解。
Ultralight flexible 3D nickel micromesh decorated with NiCoP for high stability alkaline zinc batteries†
Rechargeable alkaline zinc batteries are emerging as promising candidates for next-generation energy storage systems, owing to their affordability, eco-friendliness and high energy density. However, their widespread application is hindered by stability challenges, particularly in alkaline environments, due to cathode corrosion and deformation, as well as dendrite formation and unwanted side reactions at the Zn anode. To address these issues, we successfully developed a 3D nickel micromesh-supported NiCoP (3D NM@NiCoP) electrode. This unique structure integrates an ultrathin (4 μm), flexible and conductive nickel micromesh (NM) with a high-capacity bimetallic phosphide, NiCoP, fabricated through a combination of photolithography, chemical etching, and electro-deposition processes. The resulting electrode achieves an impressive capacitance of 26.1 μA h cm−2 at a current density of 4 mA cm−2 in a 2 M KOH electrolyte. When assembled with a superhydrophilic Zn@Al2O3@TiO2 anode, the device (3D NM@NiCoP//Zn@Al2O3@TiO2) exhibits outstanding stability, retaining 91% of its initial capacity after 11 000 cycles at 3 mA cm−2 in a 2 M KOH electrolyte. This novel configuration, with potential for scalable fabrication, provides valuable insights into the development of high-capacity and durable electrodes for alkaline zinc batteries.
期刊介绍:
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.