@article {36276,
	title = {Low cost and low density chloride solid electrolyte for all solid state cathode with high active material ratio},
	journal = {Nano Research},
	year = {2024},
	abstract = {Chloride solid electrolytes (SEs) have attracted widespread attention due to their high room-temperature ionic conductivity and excellent cathode compatibility. However, the conventionally selected central metal elements (e.g., In, Y and Ta) are usually rare and heavy, inevitably causing the high cost and high density of the obtained chloride SEs. Here, by choosing abundant and light Mg and Al as central metal elements, we develop a cheap and low density Li1.2Mg0.95Al0.3Cl4\&nbsp;SE for high active material ratio in all solid state cathode. Partial replacement of Mg2+\&nbsp;by Al3+\&nbsp;in the framework yields vacancies and lowers the non-lithium metal ions occupancy at Mg/Li co-occupied 16d\&nbsp;site, effectively relieving the blocking effects by Mg2+\&nbsp;in the pristine spinel Li2-2xMg1+xCl4. Thus, a significantly improved room-temperature conductivity of 3.08 {\texttimes} 10-4\&nbsp;S{\textperiodcentered}cm-1\&nbsp;is achieved, two orders of magnitude higher than that of Li1.2Mg1.4Cl4. More attractively, its low density of only 1.98 g{\textperiodcentered}cm-3\&nbsp;enables low SE mass ratio in cathodes (only 16 wt.\%) with still effective electrolyte/cathode contact and lithium-ion conduction inside. When charged to potential of 4.30 V, the as-fabricated Li1.2Mg0.95Al0.3Cl4-based solid lithium battery with uncoated NCM523 cathode can be cycled for over 100 cycles with a capacity retention of 86.68\% at room temperature.},
	url = {https://link.springer.com/article/10.1007/s12274-024-6769-0},
	author = {Haoyuan Tan and Meiyu Zhou and Zhongyuan Huang and Jinda Luo and Jingtian Yang and Jianping Wang and Yechao Wu and Xiaobin Cheng and Ziwei Wang and Xudong Hao and Linjun Wang and Ke Gong and Yichen Yin and Yinguo Xiao and Hongbin Yao}
}
