Clean water free of bacteria is a precious resource in areas where no centralized water facilities are available. Conventional chlorine disinfection is limited by chemical transportation, storage, and the production of carcinogenic by-products. Here, a smartphone-powered disinfection system is developed for point-of-use (POU) bacterial inactivation. The integrated system uses the smartphone battery as a power source, and a customized on-the-go (OTG) hardware connected to the phone to realize the desired electrical output. Through a downloadable mobile application, the electrical output, either constant current (20–1000 µA) or voltage (0.7–2.1 V), can be configured easily through a user-friendly graphical interface on the screen. The disinfection device, a coaxial-electrode copper ionization cell (CECIC), inactivates bacteria by low levels of electrochemically generated copper with low energy consumption. The strategy of constant current control is applied in this study to solve the problem of uncontrollable copper release by previous constant voltage control. With the current control, a high inactivation efficiency of E. coli (~6 logs) is achieved with a low level of effluent Cu (~200 µg L⁻¹) in the water samples within a range of salt concentration (0.2–1 mmol L⁻¹). The smartphone-based power workstation provides a versatile and accurate electrical output with a simple graphical user interface. The disinfection device is robust, highly efficient, and does not require complex equipment. As smartphones are pervasive in modern life, the smartphone-powered CECIC system could provide an alternative decentralized water disinfection approach like rural areas and outdoor activities.

在没有集中水设施的地区，不含细菌的清洁水是宝贵的资源。常规的氯消毒受到化学物质运输，存储和致癌副产物生产的限制。在这里，开发了一种由智能手机驱动的消毒系统，用于使用点（POU）细菌灭活。该集成系统使用智能手机电池作为电源，并将定制的移动（OTG）硬件连接到电话，以实现所需的电输出。通过可下载的移动应用程序，可以通过屏幕上的用户友好图形界面轻松配置恒定电流（20–1000 µA）或电压（0.7–2.1 V）的电输出。消毒设备，同轴电极铜电离池（CECIC），通过低水平的电化学生成的铜以低能耗灭活细菌。本研究采用恒流控制策略，以解决以前的恒压控制无法释放铜的问题。通过电流控制，灭活效率高在盐浓度范围（0.2–1 mmol L ^-1）内，水样中的废水Cu（〜200 µg L ^-1）含量低，可实现大肠杆菌（〜6 log ）。基于智能手机的电源工作站通过简单的图形用户界面即可提供通用且准确的电气输出。该消毒装置坚固，高效，并且不需要复杂的设备。随着智能手机在现代生活中的普及，由智能手机驱动的CECIC系统可以提供替代性的去中心水消毒方法，例如农村地区和户外活动。