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A Broadband Multiplex Living Solar Cell
摘要： Developing renewable and sustainable energy sources is a compelling goal in materials science and engineering. In particular, natural photosynthesis with its infinite energy reservoir provides profound inspiration for energy conversion and storage systems. Here, we report a multiplex living solar cell that offers a drastic power enhancement by harnessing the broadband spectra of the visible wavelength range for photosynthesis. Cyanobacteria are embedded into a nanostructural complex composed of Au nanoparticles (NPs) and ZnO nanorods (NRs). This nanocomposite system is capable of not only generating excitons but also amplifying the photosynthetic performance of in the broadband region of the light, resulting in multiplex energy harvesting with a peak power density of 6.15 mW/m2. We envision that this study will provide a strategic way to enhance the performance of biophotovoltaics, enabling efficient and durable energy generation.
关键词： Synechocystis sp. PCC 6803,Biophotovoltaics,hybrid nanostructure,localized surface plasmon resonance
更新于2025-09-23 15:21:01
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Development of a longevous two-species biophotovoltaics with constrained electron flow
摘要： Microbial biophotovoltaics (BPV) offers a biological solution for renewable energy production by using photosynthetic microorganisms as light absorbers. Although abiotic engineering approaches, e.g., electrode modification and device optimization, can enhance the electrochemical communication between living cells and electrodes, the power densities of BPV are still low due to the weak exoelectrogenic activity of photosynthetic microorganisms. Here, we develop a BPV based on a D-lactate mediated microbial consortium consisting of photosynthetic cyanobacteria and exoelectrogenic Shewanella. By directing solar energy from photons to D-lactate, then to electricity, this BPV generates a power density of over 150 mW·m?2 in a temporal separation setup. Furthermore, a spatial-temporal separation setup with medium replenishment enables stable operation for over 40 days with an average power density of 135 mW·m?2. These results demonstrate the electron flow constrained microbial consortium can facilitate electron export from photosynthetic cells and achieve an efficient and durable power output.
关键词： biophotovoltaics,electron flow,microbial consortium,cyanobacteria,renewable energy,D-lactate,Shewanella
更新于2025-09-12 10:27:22
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The Development of Biophotovoltaic Systems for Power Generation and Biological Analysis
摘要： Biophotovoltaic systems (BPVs) resemble microbial fuel cells, but utilise oxygenic photosynthetic microorganisms associated with an anode to generate an extracellular electrical current, which is stimulated by illumination. Study and exploitation of BPVs have come a long way over the last few decades, having benefited from several generations of electrode development and improvements in wiring schemes. Power densities of up to 0.5 W m?2 and the powering of small electrical devices such as a digital clock have been reported. Improvements in standardisation have meant that this biophotoelectrochemical phenomenon can be further exploited to address biological questions relating to the organisms. Here, we aim to provide both biologists and electrochemists with a review of the progress of BPV development with a focus on biological materials, electrode design and interfacial wiring considerations, and propose steps for driving the field forward.
关键词： photosynthesis,electrode architecture,fuel cells,biophotoelectrochemistry,biophotovoltaics
更新于2025-09-11 14:15:04
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Bioelectrochemical Interface Engineering || Biophotovoltaics
摘要： The expeditious increase in population, the furtherance of people’s lifestyles, and the liability to nurture the needs of growing populations critically demand the exploration of prodigious energy devices with remarkable potentials to meet the current massive energy demand and address great environmental concerns (Angelaalincy et al. 2018). Among the widely established alternative and renewable energy sources, fuel cells have been considered as one of the most significant energy devices, owing to their ability to generate and store energy with high efficiency and at affordable costs with trivial greenhouse emissions (Senthilkumar et al. 2018). Moreover, fuel cells have been in existence for ages and are undergoing rapid evolutionary changes with thriving technological advancements. The history of biofuel cells dates back to the early eighteenth century, and this technology became so captivating then that many researchers started experimenting and publishing results on fuel cells in the following years. However, the actual microbial fuel cell (MFC) employing pure cultures of bacteria was successfully demonstrated in the 1980s by H. Peter Bennetto (Bennetto et al. 1980).
关键词： Electron transfer mechanisms,Microbial solar cells,Fuel cell–solar cell hybrids,Biophotovoltaics,Photosynthetic microbial fuel cells
更新于2025-09-11 14:15:04