Self‐Hollowing Synthesis of Hollow Nanosphere‐Stacked CuO Electrodes for Enhanced Photoelectrochemical and Electrochemical Applications. - Tan, Runfa; Luong, Tan Nam; Jeon, Chang Hwan; Lee, Ha Min; Jung, Yunha; Han, Hyun Soo; Cho, In Sun (EcoMat, 2026)