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生物模拟分流效应同时调节高性能Zn金属阳极的溶解和接口结构
Hai-Long Wang1, Ting-Ting Su1, Tian-Yi Yang1
1Liaoning Key Laboratory of Lignocellulose Chemistry and BioMaterials, Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034 Liaoning, China.
Journal of colloid and interface science
|March 13, 2025
概括
水性离子电池通过使用西兰作为电解质添加剂克服了树的生长和的演变. 这种生物质衍生材料同时优化了溶解结构和电极接口,以提高电池性能.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池面临的挑战包括演化反应 (HER) 和树的生长.
- 优化电解质和电极至关重要,但同时调节溶解结构和电极/电解质接口仍未得到充分探索.
研究的目的:
- 开发一种使用生物质衍生添加剂的新方法,同时调节水性离子电池中的溶解结构和电极/电解质接口.
- 通过抑制HER和树突形成,提高阳极的安全性和循环寿命.
主要方法:
- 灵感来自半纤维素的Xylan (XL) 被设计为微量电解质添加剂 (ZS@XL).
- 添加剂ZS@XL被分散在水性电解质中,并被吸附在阳极上.
- 研究了XL对离子流,水电解质相互作用和离子溶解的影响.
主要成果:
- 阳极上的西兰吸附层充当了对均离子流的"道",并作为对水的物理屏障,抑制了树突的生长和HER.
- 克西兰与Zn2+的高结合能破坏了Zn(H2O) 62+溶解结构,减少了活性水,促进了更快的溶解.
- 经过修改的阳极实现了1400个/剥离可逆性循环和2800小时的循环寿命.
- 一个带有ZS@XL的Zn- (I2) 充电池演示了16,000个循环和在电气仪器中提供动力的实际应用.
结论:
- 这项工作引入了一种使用生物质材料的新策略,用于同时调节高性能水性离子电池的电解质溶解结构和电极/电解质接口.
- 添加剂ZS@XL为提高阳极的安全性和寿命提供了一个有前途的解决方案,为实际应用铺平了道路.
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