Researchers at the Massachusetts Institute of Technology (MIT) have developed a flexible battery with the consistency of toothpaste, marking a significant advancement in battery technology. This groundbreaking study was recently published in the prestigious scientific journal *Nature Materials*. The most noteworthy feature of this new battery is its high flexibility and moldability, allowing it to be easily shaped and resized to fit various devices. Traditional batteries, with their rigid structures and fixed volumes, often limit the design of smaller and more innovative gadgets. The MIT team overcame this challenge by embedding liquid electrode materials into a soft silicone gel matrix, enabling the electrodes to move freely within the battery. This innovative design not only enhances the battery’s flexibility but also boosts its energy density and cycle life. The project was led by Professor Ping Jiang from MIT’s Department of Materials Science and Engineering and his doctoral student, Ming Li. Over the past few years, their team has been dedicated to exploring the possibilities of flexible batteries. Professor Jiang highlighted that the inspiration for this technology came from the flexible anatomy of the human body. The goal was to create a powerful yet adaptable battery to support the future development of wearable devices and implantable medical devices. Through extensive experimentation, the researchers discovered that liquid electrode materials significantly improve battery performance. These materials can distribute quickly and evenly throughout the battery structure, enhancing both charging efficiency and durability. Tests have shown that the new battery maintains stable power output even when bent or folded and performs excellently after hundreds of charging cycles. The potential applications of this technology are vast. Beyond wearable and medical devices, it can be integrated into Internet of Things (IoT) devices, flexible displays, and other electronic systems that require batteries. In the future, these flexible batteries could become a standard component in next-generation smart devices, greatly improving their portability and user experience. Industry experts stress that this breakthrough is not only revolutionary in terms of battery technology but also opens up endless possibilities for innovative electronic device designs. The development of flexible batteries marks a new era in battery technology, likely to lead to the creation of many more astounding products. MIT, a world-renowned research institution, has maintained a leading position in battery and materials science. This recent achievement underscores its strong research and development capabilities.