Multiple Strategies to Build High-Performance Spherical Na-Ion Layered Oxide Cathodes

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2024-11-13 DOI:10.1021/acs.nanolett.4c02644

Xiangnan Li, Xinyu Tang, Mengdan Zhang, Ming Ge, Xiaojian Liu, Yuantao Cui, Yiwei Xu, Huishuang Zhang, Yanhong Yin, Shu-Ting Yang

引用次数: 0

Abstract

The development prospect of layered transition metal oxides in sodium-ion batteries is excellent, but there are some problems, such as poor cycle stability and a complex phase transition. The spherical NaNi_0.25Fe_0.15Mn_0.3Ti_0.1Sn_0.05Co_0.05Li_0.1O₂ (SP-HEO) has been developed to address the challenges faced by O3-type layered oxide in sodium-ion batteries. The SP-HEO material is synthesized by piling and high entropy. The multiple strategies combine to enhance the electrochemical performance and air stability. The SP-HEO demonstrated a specific discharge capacity of 150.1 mA h g^–1 at 0.1 C and 100.4 mA h g^–1 at 7 C. Ex situ XRD analysis confirmed that the SP-HEO effectively retards complex phase transitions. This study not only introduces a high-entropy design for high tap density spherical storage materials but also dispels industry concerns regarding the performance of sodium ion layered oxide cathode materials.

Abstract Image

查看原文本刊更多论文

构建高性能球形 Na 离子层状氧化物阴极的多种策略

层状过渡金属氧化物在钠离子电池中的发展前景非常好，但也存在一些问题，如循环稳定性差、相变复杂等。针对钠离子电池中 O3 型层状氧化物所面临的挑战，我们开发了球形 NaNi0.25Fe0.15Mn0.3Ti0.1Sn0.05Co0.05Li0.1O2 （SP-HEO）。SP-HEO 材料是通过堆积和高熵合成的。多种策略相结合，提高了电化学性能和空气稳定性。SP-HEO 在 0.1 C 时的比放电容量为 150.1 mA h g-1，在 7 C 时的比放电容量为 100.4 mA h g-1。这项研究不仅介绍了一种高熵设计的高分带密度球形存储材料，还消除了业界对钠离子层状氧化物阴极材料性能的担忧。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

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.