Room-Temperature All-Solid-State Sodium Battery Based on Bulk Interfacial Superionic Conductor

Chenji Hu; Jizhen Qi; Yixiao Zhang; Sijie Xie; Baotong Liu; Guoyong Xue; Daiqian Chen; Qinfeng Zheng; Ping Li; Shou-Hang Bo; Yanbin Shen; Liwei Chen

doi:10.1021/acs.nanolett.1c03605

Room-Temperature All-Solid-State Sodium Battery Based on Bulk Interfacial Superionic Conductor

Nano Lett. 2021 Dec 22;21(24):10354-10360. doi: 10.1021/acs.nanolett.1c03605. Epub 2021 Dec 3.

Authors

Chenji Hu^{1

2}, Jizhen Qi², Yixiao Zhang¹, Sijie Xie², Baotong Liu², Guoyong Xue², Daiqian Chen², Qinfeng Zheng¹, Ping Li³, Shou-Hang Bo³, Yanbin Shen², Liwei Chen^{1

2}

Affiliations

¹ School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, and in situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.
² i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, P.R. China.
³ University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, P.R. China.

PMID: 34860028
DOI: 10.1021/acs.nanolett.1c03605

Abstract

All-solid-state sodium batteries (ASSSBs) are attractive alternatives to lithium-ion batteries for grid-scale energy storage due to their high safety and ubiquitous distribution of Na sources. A critical component for ASSSB is sodium-ion conducting solid-state electrolyte (SSE). Here, we report a high-performance sodium-ion SSE with the recently developed bulk interfacial superionic conductor (BISC) concept. The ionic conductivity and areal conductance of the Na⁺ BISC at 25 °C reaches 6.5 × 10^-4 S cm^-1 and 260 mS cm^-2, respectively. Using Na_xCo_0.7Mn_0.3O₂ (x ≈ 1.0, NaCMO) as the cathode active material, all-solid-state Na||NaCMO batteries exhibiting small overpotential and ∼180 cycle life are demonstrated under room temperature. This approach may also be used to prepare other metal ion, such as Mg²⁺, Al³⁺, and K⁺, based all-solid-state batteries.

Keywords: All-solid-state battery; Bulk interfacial superionic conductors; Interlayer; Sodium metal battery.