Chinese Researchers Develop High-Durability Flowing Zinc Slurry Battery for Renewable Energy Storage

Chinese researchers have developed a groundbreaking flowing zinc slurry battery capable of retaining 81% of its capacity after 5,500 charge-discharge cycles. This innovation, created by teams at Fudan University and the Chinese Academy of Sciences, addresses long-standing challenges in zinc-based flow batteries by replacing solid zinc electrodes with a circulating slurry of zinc nanoparticles suspended in a conductive liquid. The system achieved a Coulombic efficiency of 99.94%, demonstrating exceptional stability and scalability for long-duration energy storage. The battery’s design allows zinc to transition between metallic and ionic forms while continuously circulating between storage tanks and the electrochemical cell, separating energy storage capacity from power delivery. This advancement could revolutionize renewable energy systems by enabling efficient storage of solar and wind power, with potential for expanded energy capacity through increased slurry volume without redesigning the core electrochemical system. The study, published in Nature Energy, highlights the technology’s promise for large-scale renewable energy storage solutions.