Shaoxiong Li, Meng Li, Liming Deng, Yanyun Gong, Shilong Fan, Jingfeng Zhou, Feng Hu, Tianjie Qiu, Shengjie Peng, Linlin Li
Halide-incorporated MnCo2O4.5 reconstructs the Co-centred interfacial water network for acidic oxygen evolution. Compared with pristine and F-regulated MnCo2O4.5, Cl-MnCo2O4.5 couples a moderately distorted Co environment with an intermediate-H-bond-enriched water network, enabling efficient and durable non-noble-metal acidic OER.