{"title":"微流控-纺丝-原位制备高性能钼酸镍/多孔石墨烯碳纤维超级电容器的化学策略","authors":"Jiazhuang Guo, Ying Zhang, Liangliang Zhou, Wenteng Hou, Jinze Wang, Liangliang Zhu, Su Chen","doi":"10.1002/aenm.202501418","DOIUrl":null,"url":null,"abstract":"Graphene carbonene fiber (GCF) supercapacitors are promising for portable/wearable electronics but suffer from fabrication‐induced restacking and uneven hybridization between graphene sheets and hybrid active materials, degrading electrochemical performance and hindering practical applications. Here, an innovative microfluidic‐spinning‐chemistry (MSC) method is proposed for the in situ construction of the nickel molybdate/porous GCF (NiMoO<jats:sub>4</jats:sub>/PGCF) hybrid, which manifests a large specific surface area, high electrical conductivity, and abundant redox activity, facilitating ion diffusion, and ensuring energy storage and supply. As a result, the NiMoO<jats:sub>4</jats:sub>/PGCFs express an exceptional areal capacitance of 3597.7 mF cm<jats:sup>−2</jats:sup> in a three‐electrode system. Additionally, this flexible solid‐state NiMoO<jats:sub>4</jats:sub>/PGCF supercapacitor presents large areal capacitance (1006.8 mF cm<jats:sup>−2</jats:sup>), ultrahigh energy density (218.5 µWh cm<jats:sup>−2</jats:sup>), and long‐term cycling stability (90.2% capacitive retention at 1 mA cm<jats:sup>−2</jats:sup> after 20 000 cycles), which is capable of powering a toy windmill without extra recharging by other power sources. Furthermore, a demonstration of a supercapacitive controller using the solid‐state NiMoO<jats:sub>4</jats:sub>/PGCF is presented, which could couple with a triode to manage the takeoff of gliding unmanned aircraft. This provides high‐efficiency start/stop control and safety redundancy for gliding unmanned aircraft, while also paving the way for the innovation of next‐generation gliding unmanned aircraft energy management and control systems.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"10 1","pages":""},"PeriodicalIF":24.4000,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microfluidic‐Spinning‐Chemistry Strategy toward in‐situ Generation of High‐Performance Nickel Molybdate/Porous Graphene Carbonene Fiber‐based Supercapacitors\",\"authors\":\"Jiazhuang Guo, Ying Zhang, Liangliang Zhou, Wenteng Hou, Jinze Wang, Liangliang Zhu, Su Chen\",\"doi\":\"10.1002/aenm.202501418\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Graphene carbonene fiber (GCF) supercapacitors are promising for portable/wearable electronics but suffer from fabrication‐induced restacking and uneven hybridization between graphene sheets and hybrid active materials, degrading electrochemical performance and hindering practical applications. 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引用次数: 0
摘要
石墨烯碳烯纤维(GCF)超级电容器在便携式/可穿戴电子产品中前景广阔,但由于石墨烯片与杂化活性材料之间存在制造诱导的再堆积和不均匀杂化,从而降低了电化学性能并阻碍了实际应用。本文提出了一种创新的微流体-纺丝-化学(MSC)方法,用于原位构建钼酸镍/多孔GCF (NiMoO4/PGCF)杂化物,该杂化物具有大比表面积、高导电性、丰富的氧化还原活性、促进离子扩散、保证能量储存和供应的特点。因此,在三电极系统中,NiMoO4/ pgcf表现出3597.7 mF cm−2的优异面电容。此外,这种柔性固态NiMoO4/PGCF超级电容器具有较大的面电容(1006.8 mF cm - 2),超高的能量密度(218.5µWh cm - 2)和长期循环稳定性(在2万次循环后,1ma cm - 2的电容保持率为90.2%),能够为玩具风车供电,而无需通过其他电源进行额外充电。此外,还演示了一种使用固态NiMoO4/PGCF的超级电容控制器,该控制器可以与三极管耦合来管理滑翔无人机的起飞。这为滑翔无人机提供了高效的启动/停止控制和安全冗余,同时也为下一代滑翔无人机能源管理和控制系统的创新铺平了道路。
Graphene carbonene fiber (GCF) supercapacitors are promising for portable/wearable electronics but suffer from fabrication‐induced restacking and uneven hybridization between graphene sheets and hybrid active materials, degrading electrochemical performance and hindering practical applications. Here, an innovative microfluidic‐spinning‐chemistry (MSC) method is proposed for the in situ construction of the nickel molybdate/porous GCF (NiMoO4/PGCF) hybrid, which manifests a large specific surface area, high electrical conductivity, and abundant redox activity, facilitating ion diffusion, and ensuring energy storage and supply. As a result, the NiMoO4/PGCFs express an exceptional areal capacitance of 3597.7 mF cm−2 in a three‐electrode system. Additionally, this flexible solid‐state NiMoO4/PGCF supercapacitor presents large areal capacitance (1006.8 mF cm−2), ultrahigh energy density (218.5 µWh cm−2), and long‐term cycling stability (90.2% capacitive retention at 1 mA cm−2 after 20 000 cycles), which is capable of powering a toy windmill without extra recharging by other power sources. Furthermore, a demonstration of a supercapacitive controller using the solid‐state NiMoO4/PGCF is presented, which could couple with a triode to manage the takeoff of gliding unmanned aircraft. This provides high‐efficiency start/stop control and safety redundancy for gliding unmanned aircraft, while also paving the way for the innovation of next‐generation gliding unmanned aircraft energy management and control systems.
期刊介绍:
Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small.
With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics.
The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.