TY - JOUR
T1 - Unlocking oxygen vacancy-rich high-entropy oxides in upgrading composite solid electrolyte
AU - Cheng, Jun
AU - Ci, Nai-Xuan
AU - Zhang, Hong-Qiang
AU - Zeng, Zhen
AU - Zhou, Xuan
AU - Li, Yuan-Yuan
AU - Qiu, Hua-Jun
AU - Zhai, Wei
AU - Gao, Dan-Dan
AU - Ci, Li-Jie
AU - Li, De-Ping
PY - 2025/2
Y1 - 2025/2
N2 - Recently, high-entropy materials are attracting enormous attention in battery applications, encompassing both electrode materials and solid electrolytes, due to the pliability and diversification in material composition and electronic structure. Theoretically, the rapid ion transport and the abundance of surface defects in high-entropy materials suggest a potential for enhancing the performance of composite solid-state electrolytes (CPEs). Herein, using a high-entropy oxide (HEO) filler to assess its potential contributions to CPEs is proposed. The distinctive structural distortions in HEO significantly improve the ionic conductivity (5 × 10−4 S·cm−1 at 60 °C) and Li-ion transference number (0.57) of CPEs. Furthermore, the enhanced Li-ion transport capability extends the critical current density from 0.6 to 1.5 mA·cm−2 in Li/Li symmetric cells. In addition, all-solid-state batteries incorporating the HEO-modified CPEs exhibit superior rate performance and cycling stability. The work will enrich the application of HEOs in CPEs and provide fundamental understanding. © Youke Publishing Co., Ltd. 2024.
AB - Recently, high-entropy materials are attracting enormous attention in battery applications, encompassing both electrode materials and solid electrolytes, due to the pliability and diversification in material composition and electronic structure. Theoretically, the rapid ion transport and the abundance of surface defects in high-entropy materials suggest a potential for enhancing the performance of composite solid-state electrolytes (CPEs). Herein, using a high-entropy oxide (HEO) filler to assess its potential contributions to CPEs is proposed. The distinctive structural distortions in HEO significantly improve the ionic conductivity (5 × 10−4 S·cm−1 at 60 °C) and Li-ion transference number (0.57) of CPEs. Furthermore, the enhanced Li-ion transport capability extends the critical current density from 0.6 to 1.5 mA·cm−2 in Li/Li symmetric cells. In addition, all-solid-state batteries incorporating the HEO-modified CPEs exhibit superior rate performance and cycling stability. The work will enrich the application of HEOs in CPEs and provide fundamental understanding. © Youke Publishing Co., Ltd. 2024.
KW - All-solid-state batteries
KW - Composite solid electrolyte
KW - Defective oxygen vacancy
KW - High entropy oxide
UR - http://www.scopus.com/inward/record.url?scp=85203084250&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85203084250&origin=recordpage
U2 - 10.1007/s12598-024-02961-w
DO - 10.1007/s12598-024-02961-w
M3 - RGC 21 - Publication in refereed journal
SN - 1001-0521
VL - 44
SP - 961
EP - 972
JO - Rare Metals
JF - Rare Metals
IS - 2
ER -
