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Sulfur-Doped Flowerlike Porous Carbon Derived from Metal–Organic Frameworks as a High-Performance Potassium-Ion Battery Anode
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-02-17 , DOI: 10.1021/acsaem.0c02799
Yuqi Zuo 1 , Peng Li 1 , Rui Zang 1 , Shijian Wang 2 , Zengming Man 1 , Pengxin Li 1 , Siyu Wang 1 , Wei Zhou 3
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2021-02-17 , DOI: 10.1021/acsaem.0c02799
Yuqi Zuo 1 , Peng Li 1 , Rui Zang 1 , Shijian Wang 2 , Zengming Man 1 , Pengxin Li 1 , Siyu Wang 1 , Wei Zhou 3
Affiliation
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Amorphous carbon shows great potential in K+ storage due to its low cost and adjustable interlayer distance. However, the sluggish diffusion kinetics for K+ in carbon lattice and unsatisfied capacity hinder the further application of carbon materials such as a PIB anode. Herein, we reported the MIL-88A-derived sulfur-doped porous carbon for a potassium-ion battery (PIB) anode using a facile multistep strategy. Benefiting from the unique structure of the MIL-88A precursor, the obtained carbon material with a three-dimensional (3D) open framework has a large specific area to shorten the K+ transport path. At the same time, S dopants introduce more defects and then promote K+ storage capability. Therefore, the sulfur-doped porous carbon anode shows a high reversible capacity over 358 mA h g–1 and extraordinary rate performance (192.6 mA h g–1 at 2.0 A g–1). The first-principles calculations confirm that the functional S doping in the carbon matrix promotes K adsorption.
中文翻译:
源自金属-有机骨架的硫掺杂花状多孔碳,作为高性能钾离子电池阳极
非晶碳因其低成本和可调节的层间距离而在K +存储中显示出巨大潜力。然而,K +在碳晶格中的缓慢扩散动力学和不令人满意的容量阻碍了诸如PIB阳极之类的碳材料的进一步应用。在这里,我们报告了一种使用简便的多步策略,用于钾离子电池(PIB)阳极的MIL-88A衍生的硫掺杂多孔碳。得益于MIL-88A前体的独特结构,所获得的具有三维(3D)开放框架的碳材料具有较大的比表面积,可缩短K +传输路径。同时,S掺杂剂会引入更多的缺陷,然后促进K +存储能力。因此,掺硫的多孔碳阳极显示了358毫安汞柱高的可逆容量-1和非凡率性能(192.6毫安汞柱-1 2.0 A G -1)。第一性原理计算证实,碳基质中的功能性S掺杂促进了K的吸附。
更新日期:2021-03-22
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
源自金属-有机骨架的硫掺杂花状多孔碳,作为高性能钾离子电池阳极
非晶碳因其低成本和可调节的层间距离而在K +存储中显示出巨大潜力。然而,K +在碳晶格中的缓慢扩散动力学和不令人满意的容量阻碍了诸如PIB阳极之类的碳材料的进一步应用。在这里,我们报告了一种使用简便的多步策略,用于钾离子电池(PIB)阳极的MIL-88A衍生的硫掺杂多孔碳。得益于MIL-88A前体的独特结构,所获得的具有三维(3D)开放框架的碳材料具有较大的比表面积,可缩短K +传输路径。同时,S掺杂剂会引入更多的缺陷,然后促进K +存储能力。因此,掺硫的多孔碳阳极显示了358毫安汞柱高的可逆容量-1和非凡率性能(192.6毫安汞柱-1 2.0 A G -1)。第一性原理计算证实,碳基质中的功能性S掺杂促进了K的吸附。