Durable Zn-ion hybrid capacitors using 3D printed carbon composites.
Durable Zn-ion hybrid capacitors using 3D printed carbon composites.
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DOI：
10.1039/d2ta03488c
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发表时间：
2022-07-29
影响因子：
11.9
通讯作者：
Mattevi, Cecilia
中科院分区：
文献类型：
--
作者：
Nagaraju, Goli;Tagliaferri, Stefano;Panagiotopoulos, Apostolos;Och, Mauro;Quintin-Baxendale, Rachael;Mattevi, Cecilia
可充电锌离子混合电容器（ZHC）由于其不可燃性、丰富的原材料和卓越的储能性能而在未来的储能应用中获得了相当大的关注。然而，不受控制的枝晶生长、Zn阳极的界面腐蚀和阴极材料的有限质量负载阻碍了它们的实用性。在本文中，我们使用混合离子电解质和高质量负载三维（3D）打印石墨烯-碳纳米管（Gr-C）阴极的协同组合来展示具有增强容量和耐久性的ZHC。由NaCl和ZnSO 4组成的混合电解质与原始ZnSO 4相比具有更高的离子电导率和更低的pH，这使得能够在Zn阳极上均匀地镀/剥离Zn 2+离子，如通过原位电化学和非原位ToF-SIM表征所证明的。此外，ZHC中的多层3D Gr-C复合电极由于其多孔结构、高离子可及性和双离子电荷存储贡献而能够实现更高的能量存储性能。因此，与原始电解质ZHC（0.72 mA h cm-2和14.8%）相比，3D Gr-C//Zn电池在3 mA cm-2下的最大容量为0.84 mA h cm-2，寿命周期（20 mA cm-2下为78.7%）。我们提出的快速速率测量沿着基准的混合电解质基3D Gr-C//Zn的能量密度（0.87 mW h cm−2）和功率密度（31.7 mW cm−2），为开发无枝晶和高度耐用的3D储能器件铺平了道路。高质量负载三维（3D）印刷石墨烯-碳纳米管（Gr-C）阴极用于高性能锌离子混合电容器。
Rechargeable Zn-ion hybrid capacitors (ZHCs) have gained considerable attention towards future energy storage applications owing to their non-flammable nature, high abundance of raw materials and remarkable energy storage performance. However, the uncontrolled growth of dendrites, interfacial corrosion of Zn anodes and limited mass loading of cathode materials, hinders their practical applicability. Herein, we demonstrate ZHCs with enhanced capacity and durability using a synergistic combination of a hybrid-ion electrolyte and a high-mass loading three-dimensionally (3D) printed graphene–carbon nanotube (Gr–C) cathode. The hybrid electrolyte composed of NaCl and ZnSO4, features higher ionic conductivity and lower pH compared with pristine ZnSO4, which enable uniform plating/stripping of Zn2+ ions on Zn anode, as demonstrated by in situ electrochemical and ex situ ToF-SIMs characterizations. Additionally, the multi-layered 3D Gr–C composite electrodes in ZHCs enable higher energy storage performance due to their porous architectures, high ion accessibility and dual-ion charge storage contributions. As a result, the 3D Gr–C//Zn cell unveiled a maximum capacity of 0.84 mA h cm−2 at 3 mA cm−2 with a high life cycle (78.7% at 20 mA cm−2) compared to the pristine electrolyte-based ZHCs (0.72 mA h cm−2 and 14.8%). The rapid rate measurements that we propose along with benchmarked energy density (0.87 mW h cm−2) and power density (31.7 mW cm−2) of hybrid electrolyte-based 3D Gr–C//Zn, pave the way for the development of dendrite-free and highly durable 3D energy storage devices. High-mass loading three-dimensionally (3D) printed graphene–carbon nanotube (Gr–C) cathode is utilized for high performance Zn-ion hybrid capacitors.
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影响因子：
15
作者：
Ding, Fei;Xu, Wu;Zhang, Ji-Guang
通讯作者：
Zhang, Ji-Guang
影响因子：
8.4
作者：
Kang, Zhuang;Wu, Changle;Xu, Chengjun
通讯作者：
Xu, Chengjun
影响因子：
17.1
作者：
Fan, Zhaodi;Jin, Jia;Sun, Jingyu
通讯作者：
Sun, Jingyu
影响因子：
9.5
作者：
Lee, Young-Geun;An, Geon-Hyoung
通讯作者：
An, Geon-Hyoung
影响因子：
8.3
作者：
Mouanga, M.;Bercot, P.;Rauch, J. Y.
通讯作者：
Rauch, J. Y.