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Optimizing the Spin States of Mesoporous Co3O4 Nanorods through Vanadium Doping for Long-Lasting and Flexible Rechargeable Zn–Air Batteries
ACS Catalysis ( IF 11.3 ) Pub Date : 2021-06-18 , DOI: 10.1021/acscatal.1c01585
Yuan Rao 1 , Shan Chen 1 , Qin Yue 1 , Yijin Kang 1
ACS Catalysis ( IF 11.3 ) Pub Date : 2021-06-18 , DOI: 10.1021/acscatal.1c01585
Yuan Rao 1 , Shan Chen 1 , Qin Yue 1 , Yijin Kang 1
Affiliation
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High-performance rechargeable Zn–air batteries with long-life stability are highly desirable for the power application in electric vehicles and portable electronics for their great balance in capacity and safety. The key component of the Zn–air batteries is the bifunctional oxygen electrocatalyst that requires high intrinsic reversibility and durability. Spinel Co3O4 emerges as a promising nonprecious-metal catalyst for oxygen catalysis but limited by the inefficient catalytic performance with an undesirable eg0 configuration of Co3+ ions at the octahedral sites. Herein, a mesoporous vanadium-doped Co3O4 (V–Co3O4) electrocatalyst is developed, with an optimized eg occupancy of 1.010. By optimizing the spin states of Co3O4 through V-doping, V–Co3O4 exhibits a great bifunctional property that even outperforms Pt–IrO2. As a demonstration, both a liquid-state rechargeable Zn–air battery and an all-solid-state flexible cable-type Zn–air battery are fabricated using the V–Co3O4 electrocatalysts, offering a promising power source for the next-generation electronics.
中文翻译：
通过钒掺杂优化介孔 Co 3 O 4纳米棒的自旋状态，用于持久灵活的可充电锌空气电池
具有长寿命稳定性的高性能可充电锌空气电池因其在容量和安全性方面的良好平衡而非常适合电动汽车和便携式电子产品的电源应用。锌-空气电池的关键部件是需要高内在可逆性和耐久性的双功能氧电催化剂。尖晶石钴3 ö 4射出作为氧催化一个有前途的非贵重金属催化剂，而是由低效的催化性能与不期望的ë限于克0的Co配置3+离子以八面体位置。在此，介孔钒掺杂的 Co 3 O 4 (V-Co 3 O 4) 电催化剂被开发出来，优化的 e g占有率为 1.010。通过 V 掺杂优化 Co 3 O 4的自旋态，V-Co 3 O 4表现出出色的双功能特性，甚至优于 Pt-IrO 2。作为演示，使用 V-Co 3 O 4电催化剂制造了液态可充电锌空气电池和全固态柔性电缆型锌空气电池，为下一步提供了有希望的电源一代电子产品。
更新日期：2021-07-02
中文翻译：
通过钒掺杂优化介孔 Co 3 O 4纳米棒的自旋状态，用于持久灵活的可充电锌空气电池
具有长寿命稳定性的高性能可充电锌空气电池因其在容量和安全性方面的良好平衡而非常适合电动汽车和便携式电子产品的电源应用。锌-空气电池的关键部件是需要高内在可逆性和耐久性的双功能氧电催化剂。尖晶石钴3 ö 4射出作为氧催化一个有前途的非贵重金属催化剂，而是由低效的催化性能与不期望的ë限于克0的Co配置3+离子以八面体位置。在此，介孔钒掺杂的 Co 3 O 4 (V-Co 3 O 4) 电催化剂被开发出来，优化的 e g占有率为 1.010。通过 V 掺杂优化 Co 3 O 4的自旋态，V-Co 3 O 4表现出出色的双功能特性，甚至优于 Pt-IrO 2。作为演示，使用 V-Co 3 O 4电催化剂制造了液态可充电锌空气电池和全固态柔性电缆型锌空气电池，为下一步提供了有希望的电源一代电子产品。
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