杂原子
掺杂剂
材料科学
碳纤维
阴极
阳极
假电容
超级电容器
化学工程
储能
纳米技术
锌
兴奋剂
电极
有机化学
电容
复合材料
化学
复合数
冶金
光电子学
工程类
量子力学
物理化学
物理
戒指(化学)
功率(物理)
作者
Lingqi Huang,Zhenning Gu,Wei He,Kai Shi,Liming Peng,Zhongyi Sheng,Fei Zhang,Wei Feng,Heyang Liu
出处
期刊:Small
[Wiley]
日期:2023-11-21
被引量:1
标识
DOI:10.1002/smll.202308788
摘要
Heteroatom-doped porous carbon materials have investigated to promote the energy density of zinc-ion hybrid capacitors (ZICs). Yet, the quest for high-performance carbon materials or cathodes brings to light the question of which dopants facilitate fast energy storage kinetics and various types of pseudocapacitive reactions. Investigation of carbon materials with precise quantitative dopants as the key variable represents an effective appropriate approach to comprehending the intricate role of dopants in energy storage areas. Here, a straightforward solvothermal strategy is demonstrated for a variety of pristine and iron-incorporated polymer microspheres, used as precursors for durable spherical carbons intended for cathode applications in ZICs. The strategy effectively governs the incorporation of dopants within the carbon materials, whilewhile maintaining consistent morphology, microtexture, and pore structure across different carbon variations. The synergistic effect of various dopants enhance the pseudocapacitance and facilitate the ion storage process. In consequence, the optimal cathode delivers considerable capacity (178.8 mAh g-1 at 0.5 A g-1), good energy density (120.2 Wh kg-1 at 336 W kg-1), and excellent cycling stability (101.5% capacity retention at 35 000 cycles). The demonstration showcases a viable method for crafting carbon materials with precise dopants to accommodate the zinc anode, thus enabling high-capacity and high-energy ZICs.
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