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Hierarchical 3D Cuprous Sulfide Nanoporous Cluster Arrays Self-Assembled on Copper Foam as a Binder-Free Cathode for Hybrid Magnesium-Based Batteries
Small ( IF 13.0 ) Pub Date : 2021-09-24 , DOI: 10.1002/smll.202101845 Guilei Zhu 1 , Guanglin Xia 1 , Xuebin Yu 1
Small ( IF 13.0 ) Pub Date : 2021-09-24 , DOI: 10.1002/smll.202101845 Guilei Zhu 1 , Guanglin Xia 1 , Xuebin Yu 1
Affiliation
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On account of easy accessibility, high theoretical volumetric capacity and dendrite-free magnesium (Mg) anode, Mg battery has a great promise to be next generation rechargeable batteries, yet still remains a challenging task in acquiring fast Mg2+ kinetics and effective cathode materials. Herein, hierarchical 3D cuprous sulfide porous nanosheet decorated nanowire cluster arrays with robust adhesion on copper foam (Cu2S HP/CF), which is employed as a binder-free conversion cathode material for magnesium/lithium hybrid battery, delivering impressively initial and reversible specific capacity of 383 and 311 mAh g−1 at 100 mA g−1, respectively, which are obviously outperformed corresponding powder cathode in a traditional method by using polymer binder, is reported. Intriguingly, benefiting from the hierarchical nanoporous array architecture and self-assembly feature, Cu2S HP/CF cathode shows a remarkable cycling stability with a high capacity of 129 mAh g−1 at 300 mA g−1 over 500 cycles. This work not only highlights a guide for designing hierarchical nanoporous materials derived from metal–organic frameworks, but also provides a novel strategy of in situ formation to fabricate binder-free cathodes.
中文翻译：
分层 3D 硫化亚铜纳米多孔簇阵列自组装在铜泡沫上作为混合镁基电池的无粘合剂阴极
由于易于获取、高理论体积容量和无枝晶镁 (Mg) 负极，镁电池有望成为下一代可充电电池，但在获得快速 Mg 2+动力学和有效正极材料方面仍然是一项具有挑战性的任务. 在此，分层 3D 硫化亚铜多孔纳米片装饰的纳米线簇阵列在泡沫铜（Cu 2 S HP/CF）上具有强大的粘附力，用作镁/锂混合电池的无粘合剂转换阴极材料，提供令人印象深刻的初始和可逆性的383和311毫安g的比容量-1在100mA克-1分别报道了在使用聚合物粘合剂的传统方法中明显优于相应粉末阴极的性能。有趣的是，受益于分层纳米多孔阵列结构和自组装特征，Cu 2 S HP/CF 阴极显示出显着的循环稳定性，在 300 mA g -1 500 次循环中具有 129 mAh g -1的高容量。这项工作不仅突出了设计源自金属-有机框架的分层纳米多孔材料的指南，而且还提供了一种原位形成以制造无粘合剂正极的新策略。
更新日期：2021-11-04
中文翻译：
分层 3D 硫化亚铜纳米多孔簇阵列自组装在铜泡沫上作为混合镁基电池的无粘合剂阴极
由于易于获取、高理论体积容量和无枝晶镁 (Mg) 负极，镁电池有望成为下一代可充电电池，但在获得快速 Mg 2+动力学和有效正极材料方面仍然是一项具有挑战性的任务. 在此，分层 3D 硫化亚铜多孔纳米片装饰的纳米线簇阵列在泡沫铜（Cu 2 S HP/CF）上具有强大的粘附力，用作镁/锂混合电池的无粘合剂转换阴极材料，提供令人印象深刻的初始和可逆性的383和311毫安g的比容量-1在100mA克-1分别报道了在使用聚合物粘合剂的传统方法中明显优于相应粉末阴极的性能。有趣的是，受益于分层纳米多孔阵列结构和自组装特征，Cu 2 S HP/CF 阴极显示出显着的循环稳定性，在 300 mA g -1 500 次循环中具有 129 mAh g -1的高容量。这项工作不仅突出了设计源自金属-有机框架的分层纳米多孔材料的指南，而且还提供了一种原位形成以制造无粘合剂正极的新策略。
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