通过配置筛选萘二磺酸钠添加剂的界面调节实现高性能宽pH值锌基电池

IF 32.4 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Energy & Environmental Science Pub Date : 2024-11-27 DOI:10.1039/d4ee04212c
Hui Lin, Lingxing Zeng, Chuyuan Lin, Junxiu Wu, Huibing He, Chengxiu Huang, Wenbin Lai, Peixun Xiong, Fuyu Xiao, Qingrong Qian, Qinghua Chen, Jun Lu
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引用次数: 0

摘要

用于宽pH电解质高性能负极的有机添加剂的结构设计原理尚不明确,这是水性锌金属电池(AZMB)实际应用的关键障碍。本研究以萘二磺酸钠(NADS)为例,探讨了添加剂在 AZMB 中的结构-活性关系。26 个 NADS 分子中的一对 -SO3- 基团充分发挥了双端俘获功能,通过最远端的取代基位点实现了单分子调控,有效降低了同电荷溶解结构的静电排斥。高对称性和电负性的 26 个 NADS 分子往往会在电极表面形成分子层,从而延缓 Zn2+ 在酸性-中性电解质中的浓度极化和加速沉积动力学,甚至防止 [Zn(OH)4]2- 在碱性电解质中过度局部饱和,最终抑制 Zn 阳极在宽 PH 电解质中的枝晶和副反应。因此,锌对称电池在酸性、近中性和强碱性电解质中均保持了长期循环稳定性。重要的是,锌||二氧化锰全电池和锌||活性炭电容器在宽pH电解质中也具有出色的可逆性。更妙的是,0.19 Ah 袋装电池的高性能进一步证实了其对实用水性金属电池多功能添加剂分子设计的基本指导意义。
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Interfacial Regulation via Configuration Screening of Disodium Naphthalenedisulfonate Additive Enabled High-Performance Wide-pH Zn-based Batteries
The structure design principles of organic additives for high-performance anode over wide-pH electrolytes are elusive, which are critical barriers to the practical application of aqueous zinc-metal batteries (AZMBs). Herein, this work takes disodium naphthalenedisulfonate (NADS) as an example to examine the structure-activity relationship of additives in AZMBs. The pair of –SO3- groups within the 26 NADS molecules fully exerted double-end capturing function to achieve single-molecule regulation facilitated by the distal-most substituent site, effectively minimising the electrostatic repulsion of the homo-charged solvated structure. The highly symmetric and electronegative 26 NADS molecule tended to form a molecular-layer on the surface of electrode retarded the concentration polarisation and accelerated the deposition kinetics of Zn2+ in acidic-neutral electrolytes, even preventing [Zn(OH)4]2- excessive localised saturation in alkaline electrolyte, ultimately suppressing the dendrites and side reactions of the Zn anode in wide-pH electrolytes. Consequently, the Zn-symmetrical battery retained long-term cycling stability in acidic, near neutral and strong alkaline electrolytes. Importantly, the Zn || MnO2 full batteries and Zn || activated carbon capacitor also deliver excellent reversibility in wide-pH electrolytes. Even better, a 0.19 Ah pouch battery with high performance, further confirms its fundamental guidance for the molecular design of multifunctional additives for practical aqueous metal batteries.
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来源期刊
Energy & Environmental Science
Energy & Environmental Science 化学-工程:化工
CiteScore
50.50
自引率
2.20%
发文量
349
审稿时长
2.2 months
期刊介绍: Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).
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