Chen Junli, Zhang Wenli, Zhang Xiaojun, Li Ziyan, Ma Jianhui, Zhao Lei, Jian Wenbin, Chen Suli, Yin Jian, Lin Xuliang, Qin Yanlin, Qiu Xueqing
School of Chemical Engineering and Light Industry, Guangdong University of Technology (GDUT), 100 Waihuan Xi Road, Panyu District, Guangzhou, 510006, P. R. China.
Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology (GDUT), 100 Waihuan Xi Road, Panyu District, Guangzhou, 510006, P. R. China.
ChemSusChem. 2022 Jul 21;15(14):e202200732. doi: 10.1002/cssc.202200732. Epub 2022 May 23.
The aqueous zinc-ion battery (AZIB) has been widely investigated in recent years because it has the advantages of being green, safe, and made from abundant raw materials. It is necessary to continue to study how to prepare cathode materials with excellent performance and high cycling stability for future commercialization. In this work, a strategy was proposed that uses sustainable sodium lignosulfonate as both carbon and sodium sources to obtain a sodium pre-intercalated vanadium oxide/carbon (VO/LSC) composite as the cathode of AZIB. The carbon matrix could improve the electronic conductivity of vanadium oxide, while the sodium lignosulfonate could provide sodium ions pre-intercalated into the layered vanadium oxide simultaneously. Through this strategy, vanadium-based cathode materials with high stability and excellent rate capability were obtained. The VO/LSC cathode delivered high capacities of 350 and 112.8 mAh g at 0.1 and 4.0 A g , respectively. Zinc sulfate and zinc trifluoromethyl sulfonate were selected as electrolytes, and the influence of electrolytes on the performance of VO/LSC was analyzed. The oxygen in the environment was used to oxidize the low-priced vanadium oxide to achieve a self-charging AZIB. This paper provides a valuable strategy for the design of vanadium-based cathode material for AZIB, which can broaden the research and application of AZIB.
近年来，水系锌离子电池（AZIB）因其具有绿色、安全且原材料丰富的优点而受到广泛研究。为了实现未来的商业化，有必要继续研究如何制备具有优异性能和高循环稳定性的阴极材料。在这项工作中，提出了一种策略，即使用可持续的木质素磺酸钠作为碳源和钠源，以获得一种钠预插层氧化钒/碳（VO/LSC）复合材料作为AZIB的阴极。碳基体可以提高氧化钒的电子导电性，而木质素磺酸钠可以同时提供预插入层状氧化钒中的钠离子。通过这种策略，获得了具有高稳定性和优异倍率性能的钒基阴极材料。VO/LSC阴极在0.1和4.0 A g 时分别具有350和112.8 mAh g的高容量。选择硫酸锌和三氟甲磺酸锌作为电解质，并分析了电解质对VO/LSC性能的影响。利用环境中的氧气将低价氧化钒氧化，实现了自充电AZIB。本文为AZIB钒基阴极材料的设计提供了一种有价值的策略，可拓宽AZIB的研究和应用。
