Xiangxuan Meng, Mingdong Du, Yuning Li, Shiji Du, Lixin Zhao, Shunri Zheng, Jian Zhang, Haibo Li, Liang Qiao, Kar Ban Tan, Wenjuan Han, Shichong Xu, Jiaming Li, Ming Lu
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引用次数: 0
摘要
基于锌离子传输和存储化学的固定储能基础设施因其成本、安全性和回收可行性等有利指标而受到越来越多的关注。然而,分裂水和液态电解质的流动性会导致阴极溶解和锌腐蚀,从而导致容量和使用寿命的快速衰减。在此,我们利用 MXene 作为成核添加剂,通过深共晶溶剂固化制备了一种在室温下具有高锌离子电导率的新型固态电解质结构。MXene/ZCE 在室温下的离子电导率达到 6.69 × 10-4 S cm-1。无枝晶的锌镀层/剥离具有高可逆性,可保持 2500 小时以上。随后,制造出的固态锌离子电池消除了氢化还原反应,抑制了锌枝晶,具有优异的循环性能,可在 -10 至 60 °C 范围内正常工作。这种受共晶凝固启发的设计为研究离子迁移缓慢的多价固体电化学提供了新的视角。
Solidify Eutectic Electrolytes via the Added MXene as Nucleation Sites for a Solid-State Zinc-Ion Battery with Reconstructed Ion Transport.
Stationary energy storage infrastructure based on zinc-ion transport and storage chemistry is attracting more attention due to favorable metrics, including cost, safety, and recycling feasibility. However, splitting water and liquid electrolyte fluidity lead to cathode dissolution and Zn corrosion, resulting in rapid attenuation of the capacity and service life. Herein, a new architecture of solid-state electrolytes with high zinc ionic conductivity at room temperature was prepared via solidification of deep eutectic solvents utilizing MXene as nucleation additives. The ionic conductivity of MXene/ZCEs reached 6.69 × 10-4 S cm-1 at room temperature. Dendrite-free Zn plating/stripping with high reversibility can remain for over 2500 h. Subsequently, the fabricated solid-state zinc-ion battery with eliminated HER and suppressed Zn dendrites exhibited excellent cycling performance and could work normally in a range from -10 to 60 °C. This design inspired by eutectic solidification affords new insights into the multivalent solid electrochemistry suffering from slow ion migration.
期刊介绍:
Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including:
- Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale
- Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies
- Modeling and simulation of synthetic, assembly, and interaction processes
- Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance
- Applications of nanoscale materials in living and environmental systems
Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.