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Interface Engineering via Ti_(3)C_(2)T_(x) MXene Electrolyte Additive toward Dendrite-Free Zinc deposition

Nano-Micro Letters 2021年第6期13卷 95-107页

作者： Chuang Sun Cuiping Wu Xingxing Gu Chao Wang Qinghong Wang School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhouJiangsu 221116P.R.China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon Tyne NE18STUK Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067P.R.China

Zinc metal batteries have been considered as a promising candidate for next-generation batteries due to their high safety and low ***,their practical applications are severely hampered by the poor cyclability that caused by the undesired dendrite growth of metallic ***,Ti_(3)C_(2)T_(x) MXene was first used as electrolyte additive to facilitate the uniform zn deposition by controlling the nucleation and growth process of *** MXene additives can not only be absorbed on zn foil to induce uniform initial zn deposition via providing abundant zincophilic-O groups and subsequently participate in the formation of robust solid-electrolyte interface film,but also accelerate ion transportation by reducing the zn^(2+) concentration gradient at the electrode/electrolyte ***,MXene-containing electrolyte realizes dendrite-free zn plating/striping with high Coulombic efficiency(99.7%)and superior reversibility(stably up to 1180 cycles).When applied in full cell,the zn-V_(2)O_(5)cell also delivers significantly improved cycling *** work provides a facile yet effective method for developing reversible zinc metal batteries.

关键词： Zinc metal batteries Ti_(3)C_(2)T_(x)MXene Electrolyte additive uniform zn deposition

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Crystallinity engineering of carbon nitride protective coating for ultra-stable zn metal anodes

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Electron 2024年第1期2卷 177-187页

作者： Chen Liu Yuxin Zhu Shuanlong Di Jiarui He Ping Niu Antonios Kelarakis Marta Krysmann Shulan Wang Li Li School of Metallurgy Northeastern UniversityShenyangChina State Key Laboratory of Rolling and Automation Northeastern UniversityShenyangChina Foshan Graduate School of Innovation Northeastern UniversityFoshanChina Department of Chemistry College of ScienceNortheastern UniversityShenyangChina UCLan Research Centre for Smart Materials School of Natural SciencesUniversity of Central LancashirePrestonUK School of Dentistry University of Central LancashirePrestonUK

Ineffective control of dendrite growth and side reactions on zn anodes significantly retards commercialization of aqueous zn-ion *** conventional interfacial modification strategies that are primarily focused on component optimization or microstructural tuning,herein,we propose a crystallinity engineering strategy by developing highly crystalline carbon nitride protective layers for zn anodes through molten salt ***,the highly ordered structure along with sufficient functional polar groups and pre-intercalated Kþendows the coating with high ionic conductivity,strong hydrophilicity,and accelerated ion diffusion *** calculations also confirm its enhanced zn adsorption capability compared to commonly reported carbon nitride with amorphous or semi-crystalline structure and bare *** from the aforementioned features,the as-synthesized protective layer enables a calendar lifespan of symmetric cells for 1100 h and outstanding stability of full cells with capacity retention of 91.5%after 1500 *** work proposes a new conceptual strategy for zn anode protection.

关键词： crystalline carbon nitride crystallinity engineering long cycling life uniform zn deposition zn metal anode

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