Photothermal-boosted flexible rechargeable zinc-air battery based on Ni-doped Mn3O4 with excellent low-temperature adaptability

IF 19.5 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Carbon Energy Pub Date : 2024-05-26 DOI:10.1002/cey2.567
Wengai Guo, Fan Gu, Qilin Chen, Kexuan Fu, Yuqing Zhong, Jing-Jing Lv, Shuang Pan, Yihuang Chen
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Abstract

As a promising flexible energy source for next-generation emerging electronic devices, the temperature adaptability and low-temperature performance retention of flexible zinc-air batteries (ZABs) remain a great challenge for their practical application. Herein, we report photothermal-promoted aqueous and flexible ZABs with enhanced performance under a wide temperature range via using Ni-doped Mn3O4/N-doped reduced graphene oxide (denoted as Ni-Mn3O4/N-rGO) nanohybrids as bifunctional electrocatalysts. Upon being exposed to near-infrared light, the Ni-Mn3O4/N-rGO exhibited a powerful photothermal effect, resulting in localized and immediate heating of the electrode. Such effects led to increased active sites, improved electrical conductivity, enhanced release of bubbles, and promoted surface reconstruction of the electrode catalyst as corroborated by simulation and operando Raman. Consequently, the catalytic performance was boosted, manifesting a superior activity indicator ΔE of 0.685 V with excellent durability. As expected, the corresponding photothermal-assisted rechargeable ZABs possessed an excellent maximum power density (e.g., 78.76 mW cm−2 at −10°C), superb cycling stability (e.g., over 430 cycles at −10°C), and excellent flexibility from 25°C to subzero temperature. Our work opens up new possibilities for the development of all-climate flexible electronic devices.

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基于掺杂镍的 Mn3O4 的光热增效柔性锌空气充电电池具有优异的低温适应性
锌空气柔性电池(ZABs)作为下一代新兴电子设备中一种前景广阔的柔性能源,其温度适应性和低温性能保持性仍然是其实际应用中面临的巨大挑战。在此,我们报告了利用掺杂镍的 Mn3O4/N-掺杂还原氧化石墨烯(Ni-Mn3O4/N-rGO)纳米杂化物作为双功能电催化剂,光热促进的水性柔性锌空气电池在宽温度范围内具有更高的性能。在近红外线照射下,Ni-Mn3O4/N-rGO 表现出强大的光热效应,导致电极局部立即升温。这种效应增加了活性位点,提高了导电性,增强了气泡的释放,并促进了电极催化剂的表面重构,模拟和操作拉曼都证实了这一点。因此,催化性能得到提高,表现出卓越的活性指标 ΔE 为 0.685 V,并具有极佳的耐久性。正如预期的那样,相应的光热辅助可充电 ZAB 具有出色的最大功率密度(例如,在零下 10 摄氏度时为 78.76 mW cm-2)、超强的循环稳定性(例如,在零下 10 摄氏度时超过 430 个循环)以及从 25 摄氏度到零下温度的出色灵活性。我们的工作为开发全气候柔性电子器件开辟了新的可能性。
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来源期刊
Carbon Energy
Carbon Energy Multiple-
CiteScore
25.70
自引率
10.70%
发文量
116
审稿时长
4 weeks
期刊介绍: Carbon Energy is an international journal that focuses on cutting-edge energy technology involving carbon utilization and carbon emission control. It provides a platform for researchers to communicate their findings and critical opinions and aims to bring together the communities of advanced material and energy. The journal covers a broad range of energy technologies, including energy storage, photocatalysis, electrocatalysis, photoelectrocatalysis, and thermocatalysis. It covers all forms of energy, from conventional electric and thermal energy to those that catalyze chemical and biological transformations. Additionally, Carbon Energy promotes new technologies for controlling carbon emissions and the green production of carbon materials. The journal welcomes innovative interdisciplinary research with wide impact. It is indexed in various databases, including Advanced Technologies & Aerospace Collection/Database, Biological Science Collection/Database, CAS, DOAJ, Environmental Science Collection/Database, Web of Science and Technology Collection.
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Issue Information Cover Image, Volume 6, Number 10, October 2024 Back Cover Image, Volume 6, Number 10, October 2024 Interface and doping engineering of V2C-MXene-based electrocatalysts for enhanced electrocatalysis of overall water splitting Issue Information
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