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Nanoporous CoO Nanowire Clusters Grown on Three‐Dimensional Porous Graphene Cloth as Free‐Standing Anode for Lithium‐Ion Batteries
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-02-26 , DOI: 10.1002/celc.201902117 Chencheng Zhou 1 , Jinzhe Liu 1 , Shouzhi Guo 1 , Peilin Zhang 1 , Shuo Li 1 , Yun Yang 1 , Jing Wu 1 , Luyang Chen 1 , Mingyi Wang 2
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-02-26 , DOI: 10.1002/celc.201902117 Chencheng Zhou 1 , Jinzhe Liu 1 , Shouzhi Guo 1 , Peilin Zhang 1 , Shuo Li 1 , Yun Yang 1 , Jing Wu 1 , Luyang Chen 1 , Mingyi Wang 2
Affiliation
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To further improve the capacity, charge rate and cycling stability has become urgent issues to be solved for lithium‐ion batteries (LIBs). In our study, we have synthesized nanoporous CoO nanowire clusters on three‐dimensional (3D) porous graphene cloth (denoted as CoO‐NW@GC) via a facile hydrothermal reaction and subsequent annealing process. The self‐supported graphene cloth is provided with large surface area, high porosity and superior electric conductivity, which can greatly contribute to the fast electron and ion transport. Due to the nanoporous CoO nanowire clusters uniformly in situ depositing on the robust 3D skeleton of GC substrate, the CoO‐NW@GC hybrid as anode for LIBs achieves 1190 mAh/g and 429 mAh/g under the current densities of 0.2 A/g and 3.2 A/g, respectively. After more than 200 cycles at a current density of 0.5 A/g, the capacity still maintains 1100 mAh/g. The CoO‐NW@GC illustrates high specific capacity, good stability as well as excellent rate performance.
中文翻译：
三维多孔石墨烯布上生长的纳米多孔CoO纳米线簇作为锂离子电池的独立阳极
为了进一步提高容量，充电速率和循环稳定性已成为锂离子电池（LIB）亟待解决的问题。在我们的研究中，我们通过便捷的水热反应和随后的退火过程，在三维（3D）多孔石墨烯布（表示为CoO-NW @ GC）上合成了纳米多孔CoO纳米线簇。自支撑石墨烯布具有大表面积，高孔隙率和优异的导电性，可极大地促进电子和离子的快速传输。由于纳米多孔CoO纳米线簇均匀地原位沉积在GC基质的坚固3D骨架上，因此在0.2 A / g的电流密度下，作为LiBs阳极的CoO-NW @ GC杂化物可达到1190 mAh / g和429 mAh / g和3.2 A / g。在以0.5 A / g的电流密度进行200次以上的循环后，容量仍保持1100 mAh / g。CoO-NW @ GC具有较高的比容，良好的稳定性以及出色的速率性能。
更新日期：2020-02-26
中文翻译：
三维多孔石墨烯布上生长的纳米多孔CoO纳米线簇作为锂离子电池的独立阳极
为了进一步提高容量，充电速率和循环稳定性已成为锂离子电池（LIB）亟待解决的问题。在我们的研究中，我们通过便捷的水热反应和随后的退火过程，在三维（3D）多孔石墨烯布（表示为CoO-NW @ GC）上合成了纳米多孔CoO纳米线簇。自支撑石墨烯布具有大表面积，高孔隙率和优异的导电性，可极大地促进电子和离子的快速传输。由于纳米多孔CoO纳米线簇均匀地原位沉积在GC基质的坚固3D骨架上，因此在0.2 A / g的电流密度下，作为LiBs阳极的CoO-NW @ GC杂化物可达到1190 mAh / g和429 mAh / g和3.2 A / g。在以0.5 A / g的电流密度进行200次以上的循环后，容量仍保持1100 mAh / g。CoO-NW @ GC具有较高的比容，良好的稳定性以及出色的速率性能。
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