Shen Dongyang, Rao Apparao M, Zhou Jiang, Lu Bingan
School of Physics and Electronics, Hunan University, Changsha, 410082, P. R. China.
Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson University, Clemson, SC, USA.
Angew Chem Int Ed Engl. 2022 May 23;61(22):e202201972. doi: 10.1002/anie.202201972. Epub 2022 Mar 25.
Although proton-ion batteries have received considerable attention owing to their reliability, safety, toxin-free nature, and low cost, their development remains in the early stages because of lacking proper electrolytes and cathodes for facilitating a high output voltage and stable cycle performance. We present a novel cathode based on active nitrogen centre, which provides a flat discharge plateau at 1 V with a capacity of 115 mAh g and excellent stability. Moreover, a quasi-solid electrolyte was developed to overcome the issue of corrosion, broaden the potential window of the electrolyte, and prevent the active material from dissolving. While using the unique as-developed electrolyte, the newly designed cathode retained 89.67 % of its original capacity after 2000 cycles. Finally, we demonstrated the excellent cycle performance of the as-developed metal-free, flexible, soft-packed battery. Notably, even when a portion of the battery was cut off, it continued to function normally.
尽管质子离子电池因其可靠性、安全性、无毒性质和低成本而受到了广泛关注，但其发展仍处于早期阶段，因为缺乏合适的电解质和阴极来实现高输出电压和稳定的循环性能。我们提出了一种基于活性氮中心的新型阴极，该阴极在1 V时提供平坦的放电平台，容量为115 mAh g，且具有出色的稳定性。此外，还开发了一种准固态电解质，以克服腐蚀问题，拓宽电解质的电位窗口，并防止活性材料溶解。在使用独特的新开发电解质时，新设计的阴极在2000次循环后仍保留了其原始容量的89.67 %。最后，我们展示了新开发的无金属、柔性、软包电池的出色循环性能。值得注意的是，即使电池的一部分被切断，它仍能继续正常工作。
