Achieving 96.6% energy-storage efficiency in Nd-doped tungsten-bronze ceramics through A-site vacancy engineering - Zhihong Wang; Yangfei Gao; Bian Yang; Mei Bai; Xiangran Pei; Hai Ci; Ruirui Kang; Junbo Xu; Yingying Zhao; Mengyao Guo; Fei Li; Xiaojie Lou (Chemical Engineering Journal, 2026)