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Edible rechargeable batteries represent a novel opportunity for energy storage, which currently involves the use of toxic materials. Being entirely made of food‐derived materials and additives, such batteries open the way to electronic systems characterized by unprecedented features. Their sustainability and safety can be crucial for replacing traditional batteries in low‐power applications, like agrifood and medicine, reducing environmental impact and health hazards. Yet, limitations in capacity and architecture, and concerns about stability at elevated temperature, humidity, and prolonged storage time, severely limit their current application potential. Here, a new coplanar architecture of a riboflavin‐quercetin edible battery with increased capacity, reaching 20 µAh, and operational stability of two weeks is presented. The battery is tested in diverse environmental conditions to assess its possible implementation in different scenarios, showing stable performance between 0 and 37 °C. As a proof‐of‐concept application, the coplanar architecture is exploited to develop a 3‐cell battery with a voltage of ≈2 V and demonstrate the possibility of powering a commercial Internet of Things (IoT) module. The new design and data herein presented represent significant steps toward widening the opportunities offered by edible batteries and their implementation in low‐power electronics. [ABSTRACT FROM AUTHOR]

Coral reefs are threatened by climate change and the effects of human activity on the marine environment. Researchers are attempting to rescue this fragile ecosystem through coral restoration actions, and a common step in these procedures is transplanting the new coral colonies into coral reefs. To do that, commercial concrete or epoxy resins, also called putty, are utilized, highlighting different concerns about their mechanical and hardening performances and their impact and fate once released into the environment. Hence, this study presents a new biodegradable epoxidized soybean oil acrylate (ESOA)/zein‐based coral putty capable of quick hardening underwater as an ecofriendly alternative for transplantation of new coral colonies in the reef. Coral putty is composed of two components, containing one a radical initiator and the other a radical accelerator. Once the two components are mixed, coral putty becomes hard underwater in 20–25 min, showing a hardening timescale much faster than other commercial products. The coral putty is biocompatible when applied to the coral Stylophora pistillata in aquaria and Acropora tenuis corals are out‐planted on the reef in the Maldives, demonstrating how this new class of vegetable‐oil‐based materials can be a more sustainable alternative to epoxy resins commonly used in coral restoration procedures. [ABSTRACT FROM AUTHOR]