Self-powered electrochemical sensing platform based on zinc-air battery via synergy of the light filtering effect and photoassisted oxygen reduction reaction

Zinc-Air Battery-Based Self-Powered Sensor with High Output Power for Ultrasensitive MicroRNA let-7a Detection in Cancer Cells

“…As the essential energy conversion element of SPES, various FCs have been studied and proposed, such as biofuel cells, enzyme fuel cells, photofuel cells, and so on. , Among them, photofuel cells (PFC) stand out by using light as excitation, which is considered to be clean energy, and PFC-based SPES has been widely applied for RNA, toxins, and antibiotics detection. − However, the low excitation and photoelectron–hole separation efficiency limit the wide application of PFC-based SPES to some extent. A variety of new heterojunction materials have been used as photocatalytic materials and even double photoelectrodes are utilized to improve the photoelectric conversion efficiency. − But the PFC-based SPES still have low OPD of about 10 μW/cm 2 , resulting in narrow detection range and limited sensitivity . Therefore, much effort is still needed to improve the OPD of FCs.…”