Stability problems of Pt coating on porous transport layers in PEM water electrolyzers under startup-shutdown cycling - Xiaoyun Shi; Jiwei Shan; Runcheng Zhang; Xiaoke Li; Yipeng Zhang; Chang Liu; Aidong Tan; Ying Wang; Xiaoyi Zhu; Xueqiang Gao; Jianguo Liu (Chemical Engineering Journal, 2026)