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将SnSe的减压结构定制为高性能离子电池

Naiqing Ren¹, Xiaoying Li¹, Lifeng Wang¹

¹CAS Key Laboratory of Precision and Intelligent Chemistry, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Small (Weinheim an der Bergstrasse, Germany)

|June 19, 2024

概括

金属石灰化物对离子电池 (PIB) 是有前途的,但稳定性问题仍然存在. 这项研究引入了一种新的SnSe@CNF结构,可以增强高级PIB阳极的容量和周期稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

金属焦焦化物是离子电池 (PIB) 的有希望的阳极材料,因为它们的理论容量很高.
然而,它们的实际应用受到电池运行期间显著的体积变化和不良的周期稳定性所限制.

研究的目的:

为PIBs开发一种稳定,高性能的阳极材料.
为了应对金属石化阳极的体积变异和不良周期稳定性的挑战.

主要方法:

使用嵌入碳纳米纤维 (SnSe@CNF) 中的超细SnSe纳米颗粒制造应力自适应结构.
利用电技术进行材料合成.
在PIBs中描述了SnSe@CNF阳极的电化学性能.

主要成果:

该SnSe@CNF架构实现了创纪录的特定容量272mAhg-1在50mAg-1.1.
经过证明的高速率性能,容量为125 mAh g-1在1 A g-1.1时.
超细的SnSe颗粒有助于充分利用材料和有效减轻压力,减轻化学机械降解.

结论:

开发的SnSe@CNF结构显著提高了金属化物作为PIB阳极的性能.
应力自适应设计有效缓解体积膨胀问题,从而提高周期稳定性.
这项工作为设计高性能离子电池的先进阳极材料提供了途径.

关键词:

碳纳米纤维的使用方法电力旋转是指电力旋转.离子电池离子电池压力减轻结构的结构.锡化 (tin selenide) 是一种化.

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