用于高稳定性钠金属电池的等离子处理分解纳米碳纤维

IF 2.6 4区 化学 Q3 ELECTROCHEMISTRY
Qiaorui Jiang, Jianxiang Luo, Tongshuo Zhang, Chengkai Liang, Yuwen Zhao, Tingting Liu, Zilong Li, Jun Wang, Yong Zheng, Zhijia Zhang
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引用次数: 0

摘要

碳基材料已被广泛用于钠金属电池(SMB)的阳极。碳基材料的表面改性是改善金属钠脱嵌行为的有效方法,可延长电池寿命,而 SMB 的实际应用需要更简单、更有效的改性方法。本文通过等离子体处理获得了表面粗糙的新型分解碳纳米纤维(D-CNFs)。D-CNFs 具有高度可逆的钠沉积特性,能在 0.023 V 的低极化电位下工作 800 小时。这种优异的电化学性能归功于等离子处理导致的 CNFs 解体。CNFs 暴露出更丰富的空位,为金属钠沉积提供了更多的活性位点。这意味着制备的 D-CNF 具有更好的钠存储特性。同时,这种表面改性有助于碳基材料在 SMB 中的进一步应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Disintegrated carbon nanofibers derived from plasma treatment for highly stable sodium metal batteries

Disintegrated carbon nanofibers derived from plasma treatment for highly stable sodium metal batteries

Carbon-based materials have been widely used in anodes for sodium metal batteries (SMBs). Surface modification of carbon-based materials is an effective method to improve the de-embedding behavior of sodium metal, which can increase the battery life, whereas SMBs need simpler and more efficient modification methods for practical-grade application. In this paper, novel disintegrated carbon nanofibers (D-CNFs) with rough surfaces were obtained by plasma treatment. D-CNFs exhibited highly reversible sodium deposition characteristics and were able to operate at a low polarization potential of 0.023 V for 800 h. The coulombic efficiency of the D-CNFs was stabilized above 97% after the third cycle. This excellent electrochemical performance is attributed to the disintegration of CNFs as a result of the plasma treatment. The CNFs expose richer vacancies, providing more active sites for sodium metal deposition. This implies that the prepared D-CNFs have better sodium storage properties. Meanwhile, this surface modification facilitates the further application of carbon-based materials in SMBs.

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来源期刊
CiteScore
4.80
自引率
4.00%
发文量
227
审稿时长
4.1 months
期刊介绍: The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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