【文献翻译】电解质4

Deeply Discharged, Quiescently Stable, and Long-Life Zn Anode by Spontaneous SEI Formation

Zn ion batteries (ZIBs) are a promising candidate in safe and low-cost large-scale energy storage applications. However, significantly deteriorated cycling stability of Zn anode in high depth of charge or after long-term quiescence impedes the practical application of ZIBs. Aiming at the above issue, a spontaneous solid electrolyte interphase (SEI) formation of Zn4(OH)6SO4·xH2O (ZHS) on Zn powder is achieved in pure ZnSO4 electrolyte by facile and rational interface design. The stable and ultrathin ZHS SEI plays a crucial part in insulating water molecules and conducting Zn2+ ions, intrinsically suppressing the severe hydrogen evolution and dendrite formation on the Zn powder anode. The ZHS-Zn anode delivers a stable cycling at a high DOD of 50% for over 500 h, as well as a lifespan of over 200 h after 40-days of resting at a DOD of 25%. Benefiting from the high utilization of Zn anode, the energy density of the Zn-MnxV2O5 full cell is up to 118 Wh Kg−1. This facile method can fabricate the ZHS-Zn anode as long as 1 m, revealing its feasibility in large-scale production and commercialization.

• Quiescently Stable [kwaɪˈɛsəntli ˈsteɪbəl] adj. 静置稳定的
• Spontaneous SEI Formation [spɒnˈteɪniəs ɛs iː aɪ fɔːˈmeɪʃən] n. 自发性固体电解质界面形成
• deteriorated cycling stability [dɪˈtɪərɪəreɪtɪd ˈsaɪklɪŋ stəˈbɪləti] n. 恶的循环稳定性
• impedes [ɪmˈpiːdz] v. 阻碍
• Zn4(OH)6SO4·xH2O (ZHS) [zɪŋk fɔːr haɪˈdrɒksaɪd sɪks ˈsʌlfeɪtˈhaɪdreɪt] n. 硫酸氢氧化锌水合物
• insulating water molecules [ˈɪnsjʊleɪtɪŋ ˈwɔːtə ˈmɒlɪkjuːlz] phr. 隔离水分子
• intrinsically [ɪnˈtrɪnsɪkli] adv. 本质上
• suppressing [səˈprɛsɪŋ] v. 抑制
• hydrogen evolution [ˈhaɪdrədʒən ˌiːvəˈluːʃən] n. 氢气析出
• DOD [diː oʊ diː] n. 放电深度 (Depth of Discharge)
• fabricate [ˈfæbrɪkeɪt] v. 制造

全文翻译

自发SEI形成深放电、静止稳定、长寿命的锌阳极

锌离子电池(ZIBs)是安全且低成本大规模能源存储应用的有前途候选者。然而，锌阳极在高充电深度或长时间静置后显著恶化的循环稳定性阻碍了ZIBs的实际应用。针对上述问题，通过简便且合理的界面设计，在纯ZnSO₄电解液中实现了Zn₄(OH)₆SO₄·xH₂O (ZHS)在锌粉上的自发固体电解质界面(SEI)形成。稳定且超薄的ZHS SEI在隔离水分子和传导Zn²⁺离子方面起着至关重要的作用，本质上抑制了锌粉阳极上严重的氢气析出和枝晶形成。ZHS-Zn阳极在50%的高放电深度(DOD)下提供了超过500小时的稳定循环，以及在25%的DOD下静置40天后超过200小时的寿命。受益于锌阳极的高利用率，Zn-Mn₍ₓ₎V₂O₅全电池的能量密度高达118 Wh Kg⁻¹。这种简便方法可以制造长达1米的ZHS-Zn阳极，显示了其在大规模生产和商业化中的可行性。

文献来源

Yu, J., Yi, Z., Yan, X., Chen, R., Tan, S., Li, P., Zhang, T., Zhang, H., Liang, J., & Hou, F. (2024). Deeply Discharged, Quiescently Stable, and Long-Life Zn Anode by Spontaneous SEI Formation. Small, 20(40). https://doi.org/10.1002/smll.202402055