An Electrolytic Zn-MnO2 Battery for High-Voltage and Scalable Energy Storage
An Electrolytic Zn-MnO2 Battery for High-Voltage and Scalable Energy Storage
复制标题
DOI：
10.1002/anie.201904174
复制
发表时间：
2019-06-03
影响因子：
16.6
通讯作者：
Qiao, Shi-Zhang
中科院分区：
文献类型：
--
作者：
Chao, Dongliang;Zhou, Wanhai;Qiao, Shi-Zhang
锌基电化学因其成本低、安全性高等特点，在实际储能方面受到了广泛的关注。然而，与更传统的锂离子电池相比，电网规模的应用受到输出电压有限和能量密度不足的困扰。在这里，我们提出了一种传统锌离子电池中潜在的高压MnO2电解过程，并报道了一种新的电解锌-MnO2系统，通过使能质子和电子动力学，使电解过程最大化。与其他锌基电化学器件相比，这种新型锌锰电池具有创纪录的1.95V输出电压和约570mAhg(-1)的额外重量容量，同时考虑正负极活性物质，其记录能量密度约为409Whkg(-1)。这笔费用保守估计为
Zinc-based electrochemistry is attracting significant attention for practical energy storage owing to its uniqueness in terms of low cost and high safety. However, the grid-scale application is plagued by limited output voltage and inadequate energy density when compared with more conventional Li-ion batteries. Herein, we propose a latent high-voltage MnO2 electrolysis process in a conventional Zn-ion battery, and report a new electrolytic Zn-MnO2 system, via enabled proton and electron dynamics, that maximizes the electrolysis process. Compared with other Zn-based electrochemical devices, this new electrolytic Zn-MnO2 battery has a record-high output voltage of 1.95V and an imposing gravimetric capacity of about 570mAhg(-1), together with a record energy density of approximately 409Whkg(-1) when both anode and cathode active materials are taken into consideration. The cost was conservatively estimated at