Yuan Du, Zhao Jin, Ren Hao, Chen Yingqian, Chua Rodney, Jie Ernest Tang Jun, Cai Yi, Edison Eldho, Manalastas William, Wong Ming Wah, Srinivasan Madhavi
College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha, Hunan, 410004, P. R. China.
School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore, 639798, Singapore.
Angew Chem Int Ed Engl. 2021 Mar 22;60(13):7213-7219. doi: 10.1002/anie.202015488. Epub 2021 Feb 17.
The reversibility of metal anode is a fundamental challenge to the lifetime of rechargeable batteries. Though being widely employed in aqueous energy storage systems, metallic zinc suffers from dendrite formation that severely hinders its applications. Here we report texturing Zn as an effective way to address the issue of zinc dendrite. An in-plane oriented Zn texture with preferentially exposed (002) basal plane is demonstrated via a sulfonate anion-induced electrodeposition, noting no solid report on (002) textured Zn till now. Anion-induced reconstruction of zinc coordination is revealed to be responsible for the texture formation. Benchmarking against its (101) textured-counterpart by the conventional sulphate-based electrolyte, the Zn (002) texture enables highly reversible stripping/plating at a high current density of 10 mA cm , showing its dendrite-free characteristics. The Zn (002) texture-based aqueous zinc battery exhibits excellent cycling stability. The developed anion texturing approach provides a pathway towards exploring zinc chemistry and prospering aqueous rechargeable batteries.
金属阳极的可逆性是可充电电池寿命面临的一项根本性挑战。尽管金属锌在水系储能系统中被广泛应用，但其会形成枝晶，这严重阻碍了它的应用。在此，我们报道了对锌进行织构化处理，作为解决锌枝晶问题的一种有效方法。通过磺酸根阴离子诱导电沉积，展示了一种具有优先暴露的（002）基面的面内取向锌织构，注意到目前尚无关于（002）织构化锌的可靠报道。研究发现，阴离子诱导的锌配位重构是织构形成的原因。与传统硫酸盐基电解质的（101）织构对应物相比，Zn（002）织构能够在10 mA cm的高电流密度下实现高度可逆的脱溶/电镀，展现出其无枝晶特性。基于Zn（002）织构的水系锌电池表现出优异的循环稳定性。所开发的阴离子织构化方法为探索锌化学和推动水系可充电电池发展提供了一条途径。
