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Three-Dimensional Zinc-Seeded Carbon Nanofiber Architectures as Lightweight and Flexible Hosts for a Highly Reversible Zinc Metal Anode
ACS Nano ( IF 15.8 ) Pub Date : 2023-09-19 , DOI: 10.1021/acsnano.3c04996 Jian-Hua Wang 1 , Li-Feng Chen 1 , Wei-Xu Dong 1 , Kailong Zhang 1 , Yi-Fan Qu 1 , Jia-Wei Qian 1 , Shu-Hong Yu 2
ACS Nano ( IF 15.8 ) Pub Date : 2023-09-19 , DOI: 10.1021/acsnano.3c04996 Jian-Hua Wang 1 , Li-Feng Chen 1 , Wei-Xu Dong 1 , Kailong Zhang 1 , Yi-Fan Qu 1 , Jia-Wei Qian 1 , Shu-Hong Yu 2
Affiliation
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Uneven zinc (Zn) deposition typically leads to uncontrollable dendrite growth, which renders an unsatisfactory cycling stability and Coulombic efficiency (CE) of aqueous zinc ion batteries (ZIBs), restricting their practical application. In this work, a lightweight and flexible three-dimensional (3D) carbon nanofiber architecture with uniform Zn seeds (CNF-Zn) is prepared from bacterial cellulose (BC), a kind of biomass with low cost, environmental friendliness, and abundance, as a host for highly reversible Zn plating/stripping and construction of high-performance aqueous ZIBs. The as-prepared 3D CNF-Zn with a porous interconnected network significantly decreases the local current density, and the functional Zn seeds provide uniform nuclei to guide the uniform Zn deposition. Benefiting from the synergistic effect of Zn seeds and the 3D porous framework in the flexible CNF-Zn host, the electrochemical performance of the as-constructed ZIBs is significantly improved. This flexible 3D CNF-Zn host delivers a high and stable CE of 99.5% over 450 cycles, ensuring outstanding rate performance and a long cycle life of over 500 cycles at 4 A g–1 in the CNF-Zn@Zn//NaV3O8·1.5H2O full battery. More importantly, owing to the flexibility of the 3D CNF-Zn host, the as-assembled pouch cell shows outstanding mechanical flexibility and excellent energy storage performance. This strategy of producing readily accessible carbon from biomass can be employed to develop advanced functional nanomaterials for next-generation flexible energy storage devices.
中文翻译：
三维锌籽晶碳纳米纤维结构作为高度可逆锌金属阳极的轻质且灵活的主体
不均匀的锌（Zn）沉积通常会导致不可控的枝晶生长，从而导致水系锌离子电池（ZIB）的循环稳定性和库仑效率（CE）不理想，限制了其实际应用。在这项工作中，利用细菌纤维素（BC）制备了一种具有均匀锌种子的轻质柔性三维（3D）碳纳米纤维结构（CNF-Zn），细菌纤维素是一种低成本、环境友好且丰富的生物质，用于高度可逆镀锌/剥离和构建高性能水性 ZIB 的主体。所制备的具有多孔互连网络的3D CNF-Zn显着降低了局部电流密度，并且功能性Zn种子提供了均匀的核以引导均匀的Zn沉积。受益于柔性CNF-Zn主体中Zn种子和3D多孔框架的协同效应，所构建的ZIB的电化学性能显着提高。这种灵活的 3D CNF-Zn 主体在 450 个循环中可提供 99.5% 的高且稳定的 CE，确保CNF-Zn@Zn//NaV 3中 4 A g –1 条件下出色的倍率性能和超过 500 个循环的长循环寿命O 8 ·1.5H 2 O 充满电。更重要的是，由于3D CNF-Zn主体的灵活性，组装后的软包电池表现出出色的机械灵活性和优异的储能性能。这种从生物质中生产易于获取的碳的策略可用于开发用于下一代柔性储能设备的先进功能纳米材料。
更新日期：2023-09-19
中文翻译：
三维锌籽晶碳纳米纤维结构作为高度可逆锌金属阳极的轻质且灵活的主体
不均匀的锌（Zn）沉积通常会导致不可控的枝晶生长，从而导致水系锌离子电池（ZIB）的循环稳定性和库仑效率（CE）不理想，限制了其实际应用。在这项工作中，利用细菌纤维素（BC）制备了一种具有均匀锌种子的轻质柔性三维（3D）碳纳米纤维结构（CNF-Zn），细菌纤维素是一种低成本、环境友好且丰富的生物质，用于高度可逆镀锌/剥离和构建高性能水性 ZIB 的主体。所制备的具有多孔互连网络的3D CNF-Zn显着降低了局部电流密度，并且功能性Zn种子提供了均匀的核以引导均匀的Zn沉积。受益于柔性CNF-Zn主体中Zn种子和3D多孔框架的协同效应，所构建的ZIB的电化学性能显着提高。这种灵活的 3D CNF-Zn 主体在 450 个循环中可提供 99.5% 的高且稳定的 CE，确保CNF-Zn@Zn//NaV 3中 4 A g –1 条件下出色的倍率性能和超过 500 个循环的长循环寿命O 8 ·1.5H 2 O 充满电。更重要的是，由于3D CNF-Zn主体的灵活性，组装后的软包电池表现出出色的机械灵活性和优异的储能性能。这种从生物质中生产易于获取的碳的策略可用于开发用于下一代柔性储能设备的先进功能纳米材料。
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