Anisotropic, low-tortuosity and ultra-thick red P@C-Wood electrodes for sodium-ion batteries.,Nanoscale

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Anisotropic, low-tortuosity and ultra-thick red P@C-Wood electrodes for sodium-ion batteries.
Nanoscale ( IF 5.8 ) Pub Date : 2020-06-11 , DOI: 10.1039/d0nr03059g
Longfei Han ₁ , Junling Wang , Xiaowei Mu , Can Liao , Wei Cai , Zhixin Zhao , Yongchun Kan , Weiyi Xing , Yuan Hu

Affiliation

Red phosphorus (P) is considered to be the most suitable electrode for sodium-ion batteries due to its low cost, earth abundance and high theoretical capacity. Numerous studies have focused on improving the low conductivity and the extremely large volume change of red P during the cycling process. However, these strategies heavily decrease the P mass loading in the electrode. Herein, inspired by natural wood, we successfully develop an ultra-thick bulk red Phosphorus@Carbon-Wood (red P@C-Wood) electrode via the vaporization-condensation process. The sodium-ion batteries assembled with the fabricated red P@C-Wood electrode provide a high areal capacity of 18 mA h cm⁻² (≈5 times those of other reported electrodes) and the P mass loading of up to 8.4 mg cm⁻² (≥2 times those of other reported electrodes). The combination of red phosphorus and carbonized wood provides a new strategy for people to improve the areal energy density of lithium and sodium batteries.

中文翻译：

钠离子电池的各向异性，低曲度和超厚红色P @ C-Wood电极。

红磷（P）由于其低成本，大地丰满和高理论容量而被认为是最适合钠离子电池的电极。许多研究集中在改善循环过程中红色磷的低电导率和极大的体积变化方面。但是，这些策略大大降低了电极中P的质量负载。在此，在天然木材的启发下，我们通过汽化冷凝工艺成功开发了超厚的块状红磷@碳-木（红色P @ C-木）电极。与组装中的钠离子电池制造红色2P @ C-木电极提供的18毫安高厘米高面积容量^-2（≈5倍那些报告的其他电极）和向上的P-质量负载至8.4毫克厘米^{- 2}（≥其他报告电极的2倍）。红磷和碳化木的结合为人们改善锂和钠电池的面能量密度提供了新的策略。

更新日期：2020-07-16

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