Regulating zinc deposition behaviors by using a functional PANI modification layer on a separator for high performance aqueous zinc-ion batteries,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Regulating zinc deposition behaviors by using a functional PANI modification layer on a separator for high performance aqueous zinc-ion batteries
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2023-04-25 , DOI: 10.1039/d3ta01344h
Fangfang Wu ₁ , Fukai Du ₁ , Pengchao Ruan ₂ , Gangfeng Cai ₁ , Ye Chen ₁ , Xinyu Yin ₁ , Lu Ma ₁ , Ruilian Yin ₃ , Wenhui Shi ₄ , Wenxian Liu ₁ , Jiang Zhou ₂ , Xiehong Cao ₁

Affiliation

Aqueous zinc-ion batteries (AZIBs) are promising energy storage devices due to their high safety, abundant zinc reserves, high theoretical capacity and low redox potential. Glass fiber (GF) has been widely used as a separator in AZIBs; however, the strong affinity to zinc ions of GF easily induces the growth of zinc dendrites towards the separator and results in a short circuit of the battery. Herein, we propose a new strategy for regulating zinc deposition behaviors by in situ polyaniline (PANI) modification on a commercial GF separator (GF/PANI). The theoretical and experimental results indicate that a PANI modification layer weakens zincophilicity force, homogenizes the surface electric field distribution and induces uniform plating/stripping of zinc ions, and thus, the reversibility of the zinc anode is significantly improved. Typically, a Zn‖Zn symmetric battery with a GF/PANI-600 separator can sustain a longer cycle up to 3000 h at 1.0 mA cm⁻² with 1.0 mA h cm⁻², far exceeding than that with a GF separator (70 h). Additionally, a Zn‖MnO₂ full battery with a GF/PANI-600 separator also delivers a higher capacity retention rate of 89.5% after 300 cycles at 0.5 A g⁻¹ (50.7% that of the Zn|GF|MnO₂ battery). This work provides a new insight into the design of durable AZIBs from the viewpoint of the modification of the separator.

中文翻译：

通过在高性能水性锌离子电池隔膜上使用功能性 PANI 改性层来调节锌沉积行为

水系锌离子电池（AZIBs）具有安全性高、锌储量丰富、理论容量高和氧化还原电位低等优点，是很有前途的储能装置。玻璃纤维 (GF) 已广泛用作 AZIB 中的隔膜；然而，GF对锌离子的强亲和力容易导致锌枝晶向隔膜生长，导致电池短路。在此，我们提出了一种通过原位调节锌沉积行为的新策略商业 GF 分离器 (GF/PANI) 上的聚苯胺 (PANI) 改性。理论和实验结果表明，聚苯胺改性层削弱了亲锌力，使表面电场分布均匀化，诱导锌离子的均匀电镀/剥离，从而显着提高了锌负极的可逆性。^{通常，具有 GF/PANI-600 隔膜的 Zn‖Zn 对称电池在 1.0 mA cm -2}和 1.0 mA h cm ^-2下可以维持长达 3000 小时的循环，远远超过使用 GF 隔膜的电池（70 h ). 此外，采用 GF/PANI-600 隔膜的 Zn‖MnO ₂全电池在 0.5 A g ⁻¹下循环 300 次后也具有 89.5% 的更高容量保持率（是 Zn|GF|MnO 的 50.7%）₂电池）。这项工作从分离器改性的角度为耐用 AZIB 的设计提供了新的见解。

更新日期：2023-04-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南