释放无序岩盐氧化物作为可充电镁电池的阴极

Researchers at Tohoku University have made a groundbreaking advancement in battery technology, developing a novel cathode material for rechargeable magnesium batteries (RMBs) that enables efficient charging and discharging even at low temperatures. This innovative material, leveraging an enhanced rock-salt structure, promises to usher in a new era of energy storage solutions that are more affordable, safer, and higher in capacity.
东北大学的研究人员在电池技术领域取得突破性进展，开发出一种用于可充电镁电池（RMBs）的新型阴极材料，该材料即使在低温下也能实现高效充放电。这种利用改良岩盐结构的创新材料，有望开启更经济、更安全、更高容量储能解决方案的新纪元。

Details of the findings were published in the Journal of Materials Chemistry A on March 15, 2024.
研究结果详情于2024年3月15日发表在《Journal of Materials Chemistry A》上。

The study showcases a considerable improvement in magnesium (Mg) diffusion within a rock-salt structure, a critical advancement since the denseness of atoms in this configuration had previously impeded Mg migration. By introducing a strategic mixture of seven different metallic elements, the research team created a crystal structure abundant in stable cation vacancies, facilitating easier Mg insertion and extraction.
该研究展示了岩盐结构中镁（Mg）扩散的显著改善，这一关键进展意义重大，因为该构型中原子的致密性曾阻碍镁的迁移。通过引入七种不同金属元素的策略性混合物，研究团队创建了富含稳定阳离子空位的晶体结构，从而促进了镁的嵌入和脱出。

This represents the first utilization of rocksalt oxide as a cathode material for RMBs. The high-entropy strategy employed by the researchers allowed the cation defects to activate the rocksalt oxide cathode.
这是首次将岩盐氧化物用作RMBs的阴极材料。研究人员采用的高熵策略使阳离子缺陷得以激活岩盐氧化物阴极。

The development also addresses a key limitation of RMBs -- the difficulty of Mg transport within solid materials. Until now, high temperatures were necessary to enhance Mg mobility in conventional cathode materials, such as those with a spinel structure. However, the material unveiled by Tohoku University researchers operates efficiently at just 90°C, demonstrating a significant reduction in the required operating temperature.
这一进展还解决了可充电镁电池（RMBs）的一个关键限制——镁在固体材料中传输的难度。此前，传统正极材料（如具有尖晶石结构的材料）必须依赖高温来提升镁离子的迁移率。然而，东北大学研究人员公布的新材料仅需90°C即可高效运作，所需工作温度显著降低。

Tomoya Kawaguchi, a professor at Tohoku University's Institute for Materials Research (IMR), notes the broader implications of the study. "Lithium is scarce and unevenly distributed, whereas magnesium is abundantly available, offering a more sustainable and cost-effective alternative for lithium-ion batteries. Magnesium batteries, featuring the newly developed cathode material, are poised to play a pivotal role in various applications, including grid storage, electric vehicles, and portable electronic devices, contributing to the global shift towards renewable energy and reduced carbon footprints."
东北大学材料研究所（IMR）的川口智也教授指出这项研究具有更广泛的意义："锂资源稀缺且分布不均，而镁储量丰富，能为锂离子电池提供更可持续且更具成本效益的替代方案。"采用新型阴极材料的镁电池将在电网储能、电动汽车和便携式电子设备等多个领域发挥关键作用，为推动全球能源结构向可再生能源转型、减少碳足迹做出贡献。

Kawaguchi collaborated with Tetsu Ichitsubo, also a professor at IMR, who states, "By harnessing the intrinsic benefits of magnesium and overcoming previous material limitations, this research paves the way for the next generation of batteries, promising significant impacts on technology, the environment, and society."
川口与同为IMR教授的市坪哲合作，他表示：“通过利用镁的固有优势并克服以往的材料限制，这项研究为下一代电池铺平了道路，有望对技术、环境和社会产生重大影响。”

Ultimately, the breakthrough is a major step forward in the quest for efficient, eco-friendly energy storage solutions.
最终，这一突破是在寻求高效、环保的能源储存解决方案任务中迈出的重要一步。