Beyond Li-ion: Solid-State Batteries

未来的推进技术需要超过锂离子极限的电池。具有Li金属阳极的固态电池（SSB）承诺更大的能量和功率密度，以及改进的安全性，但目前受到枝晶形成的困扰，枝晶形成导致差的倍率性能和循环寿命。此外，与锂离子电池不同，外部施加的压力对于稳定运行至关重要。我们建议在操作条件下使用最先进的电化学，结构和化学探针对SSB进行深入询问，以获得对这些系统动力学的无与伦比的机械见解。其中包括：电化学阻抗谱、X射线和中子成像/散射以及X射线荧光和吸收光谱。再加上一套非原位表征方法，我们试图建立一个完整的图片的化学转化和降解过程中的SSB。这些见解将有助于开发超出锂离子的电化学存储的协议和快速诊断。

Future propulsion technologies require batteries that exceed the limits of Li-ion. Solid-state batteries (SSBs) with a Li metal anode promise greater energy and power density, as well as improved safety, but are currently plagued by dendrite formation which leads to poor rate performance and cycle life. Additionally, unlike Li-ion batteries, external applied pressure is known to be vital for stable operation. We propose in-depth interrogation of SSBs using state-of-the-art electrochemical, structural and chemical probes under operando conditions to give unparalleled mechanistic insights into the dynamics of these systems. These include: electrochemical impedance spectroscopy, X-ray and neutron imaging/scattering as well as X-ray fluorescence and absorption spectroscopies. Coupled with a suite of ex situ characterisation methods, we seek to build a complete picture of the chemical transformations and degradation processes in SSBs. These insights will aid in the development of protocols and rapid diagnostics for electrochemical storage beyond Li-ion.