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Simultaneously Tailoring Zinc Deposition and Solvation Structure by Electrolyte Additive
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-26 , DOI: 10.1021/acsami.3c16717 Shiyang Hu 1 , Hui Ma 2 , Xiaomeng Fan 3 , Huachao Tao 1 , Xuelin Yang 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-12-26 , DOI: 10.1021/acsami.3c16717 Shiyang Hu 1 , Hui Ma 2 , Xiaomeng Fan 3 , Huachao Tao 1 , Xuelin Yang 1
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Aqueous zinc ion batteries (AZIBs) have attracted intense attention due to their high safety and low cost. Unfortunately, the serious dendrite growth and side reactions of the Zn metal anode in an aqueous electrolyte result in rapid battery failure, hindering the practical application of AZIBs. Herein, sodium gluconate as a dual-functional electrolyte additive has been employed to enhance the electrochemical performance of AZIBs. Gluconate anions preferentially adsorb on the surface of the Zn anode, which effectively prevents H2 evolution and induces uniform Zn deposition to suppress dendrite growth. Moreover, the gluconate anions can highly coordinate with Zn2+, promoting the dissolution of [Zn(H2O)6]2+ to inhibit side reactions and the water-induced corrosion reaction. As a result, the Zn||Zn symmetric battery exhibits a long-term cycling stability of over 3000 h at 1 mA cm–2/1 mA h cm–2 and 600 h at 10 mA cm–2/10 mA h cm–2. Furthermore, the NH4V4O10||Zn full battery also displays excellent cycling stability and a high reversible capacity of 193 mA h g–1 at 2 A g–1 after 1000 cycles. Given the low-cost advantage of SG, the proposed interface chemistry modulation strategy holds considerable potential for promoting the commercialization of AZIBs.
中文翻译：
通过电解质添加剂同时调整锌沉积和溶剂化结构
水系锌离子电池（AZIB）由于其高安全性和低成本而引起了人们的广泛关注。不幸的是，锌金属负极在水性电解质中严重的枝晶生长和副反应导致电池快速失效，阻碍了AZIBs的实际应用。在此，葡萄糖酸钠作为双功能电解质添加剂被用来增强AZIBs的电化学性能。葡萄糖酸阴离子优先吸附在Zn阳极表面，有效防止H 2析出并诱导均匀的Zn沉积以抑制枝晶生长。此外，葡萄糖酸阴离子可与Zn 2+高度配位，促进[Zn(H 2 O) 6 ] 2+溶解，抑制副反应和水致腐蚀反应。因此，Zn||Zn对称电池在1 mA cm –2 /1 mA h cm –2下表现出超过3000小时的长期循环稳定性，在10 mA cm –2 /10 mA h cm –2下表现出600小时以上的长期循环稳定性。 2 .此外，NH 4 V 4 O 10 ||Zn全电池还表现出优异的循环稳定性和1000次循环后在2 A g –1下193 mA hg –1的高可逆容量。鉴于SG的低成本优势，所提出的界面化学调制策略对于促进AZIBs的商业化具有巨大的潜力。
更新日期：2023-12-26
中文翻译：
通过电解质添加剂同时调整锌沉积和溶剂化结构
水系锌离子电池（AZIB）由于其高安全性和低成本而引起了人们的广泛关注。不幸的是，锌金属负极在水性电解质中严重的枝晶生长和副反应导致电池快速失效，阻碍了AZIBs的实际应用。在此，葡萄糖酸钠作为双功能电解质添加剂被用来增强AZIBs的电化学性能。葡萄糖酸阴离子优先吸附在Zn阳极表面，有效防止H 2析出并诱导均匀的Zn沉积以抑制枝晶生长。此外，葡萄糖酸阴离子可与Zn 2+高度配位，促进[Zn(H 2 O) 6 ] 2+溶解，抑制副反应和水致腐蚀反应。因此，Zn||Zn对称电池在1 mA cm –2 /1 mA h cm –2下表现出超过3000小时的长期循环稳定性，在10 mA cm –2 /10 mA h cm –2下表现出600小时以上的长期循环稳定性。 2 .此外，NH 4 V 4 O 10 ||Zn全电池还表现出优异的循环稳定性和1000次循环后在2 A g –1下193 mA hg –1的高可逆容量。鉴于SG的低成本优势，所提出的界面化学调制策略对于促进AZIBs的商业化具有巨大的潜力。
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