Perspective—Micro Photosynthetic Power Cells

Tanneru, Hemanth Kumar; Kuruvinashetti, Kiran; Pillay, Pragasen; Rengaswamy, Raghunathan; Packirisamy, Muthukumaran

doi:10.1149/2.0031909jes

Cited by 15 publications

(36 citation statements)

References 64 publications

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“…Theoretically, OCV should be the Nernst reversible voltage, however, because of various losses, such as ohmic losses, concentration losses, and activation losses, the OCV is lesser. For more details on the OCV, readers are directed to References [10,13]. In Reference [3] OCV was 330 mV after 4 min of the operating time, and when it was subjected to a direct light intensity of 2000 µmole photons m −2 s −1 , OCV sharply increased to 470 mV and stabilized within a short period of 2 min.…”

Section: Performance Parameters Of the Micro-photosynthetic Power Celmentioning

confidence: 99%

“…The high cost is due to use of noble materials as electrodes/current collectors and the proton exchange membrane Nafion. A recent work by Tanneru et al [10] provides a detailed possibilities for performance enhancement and cost reduction.…”

Section: Avenues For Cost Reduction Of the Micro-photosynthetic Powermentioning

confidence: 99%

“…Typical power produced by a µPSC varies in the range of 10-100 mW [3,[5][6][7][8][9]. Power density values of µPSC have witnessed an increase of approximately two orders of magnitude since their origin [10]. Figure 1 shows the potential applications of µPSCs for IoT sensors.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the research focus is on the development of lower cost and better performing µPSCs. A very recent article by Tanneru [10] provides a brief history and state of the art of µPSC technology. Mathematical modeling as a tool to understand the performance improvement possibilities by design optimization has also been attempted [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility Studies of Micro Photosynthetic Power Cells as a Competitor of Photovoltaic Cells for Low and Ultra-Low Power IoT Applications

et al. 2019

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In this work, we provide a cost comparison of micro-photosynthetic power cells (µPSC) with the well-established photovoltaic (PV) cells for ultra-low power and low power applications. We also suggest avenues for the performance improvement of µPSC. To perform cost comparison, we considered two case studies, which are development of energy systems for: (i) A typical mobile-phone battery charging (low power application) and (ii) powering a humidity sensor (ultra-low power application). For both the cases, we have elucidated the steps in designing energy systems based on PV and µPSC technologies. Based on the design, we have considered the components needed and their costs to obtain total cost for developing energy systems using both PV and µPSC technologies. Currently, µPSCs based energy systems are costlier compared to their PV counterparts. We have provided the avenues for improving µPSC performance, niche application areas, and aspects in which µPSCs are comparable to PV cells. With a huge potential to develop low-cost and high performing technologies, this emerging technology can share the demand on PV technologies for ultra-low power applications.

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Section: Performance Parameters Of the Micro-photosynthetic Power Celmentioning

confidence: 99%

Section: Avenues For Cost Reduction Of the Micro-photosynthetic Powermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Feasibility Studies of Micro Photosynthetic Power Cells as a Competitor of Photovoltaic Cells for Low and Ultra-Low Power IoT Applications

et al. 2019

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“…Besides, nano-composite catalyst showed promising results: Kodali et al 7 enhanced the MFC performance by using an iron-graphence catalyst and Karthikeyan et al 8 reported 3D flower-like FeWO 4 /CeO 2 on rGO produced high power and stable power output from alga BPV devices. BPV devices have been reported to generate current and power densities, respectively, in the range of 0.17 to 993 mA m −2 and up to 400 mW m −2 with various BPV reactors and operating parameters 1 . The maximum power density reported thus far was generated from a two-chamber device using an algae suspension, mediated electron transfer, and a gold-inscribed Nafion membrane 9 .…”

mentioning

confidence: 99%

Optimised spectral effects of programmable LED arrays (PLA)s on bioelectricity generation from algal-biophotovoltaic devices

Phang

Lan

et al. 2020

Sci Rep

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The biophotovoltaic cell (BPV) is deemed to be a potent green energy device as it demonstrates the generation of renewable energy from microalgae; however, inadequate electron generation from microalgae is a significant impediment for functional employment of these cells. The photosynthetic process is not only affected by the temperature, CO2 concentration and light intensity but also the spectrum of light. Thus, a detailed understanding of the influences of light spectrum is essential. Accordingly, we developed spectrally optimized light using programmable LED arrays (PLA)s to study the effect on algae growth and bioelectricity generation. Chlorella is a green microalga and contains chlorophyll-a (chl-a), which is the major light harvesting pigment that absorbs light in the blue and red spectrum. In this study, Chlorella is grown under a PLA which can optimally simulate the absorption spectrum of the pigments in Chlorella. This experiment investigated the growth, photosynthetic performance and bioelectricity generation of Chlorella when exposed to an optimally-tuned light spectrum. The algal BPV performed better under PLA with a peak power output of 0.581 mW m−2 for immobilized BPV device on day 8, which is an increase of 188% compared to operation under a conventional white LED light source. The photosynthetic performance, as measured using pulse amplitude modulation (PAM) fluorometry, showed that the optimized spectrum from the PLA gave an increase of 72% in the rETRmax value (190.5 μmol electrons m−2 s−1), compared with the conventional white light source. Highest algal biomass (1100 mg L−1) was achieved in the immobilized system on day eight, which translates to a carbon fixation of 550 mg carbon L−1. When artificial light is used for the BPV system, it should be optimized with the light spectrum and intensity best suited to the absorption capability of the pigments in the cells. Optimum artificial light source with algal BPV device can be integrated into a power management system for low power application (eg. environment sensor for indoor agriculture system).

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Gold Nanoparticle Interaction in Algae Enhancing Quantum Efficiency and Power Generation in Microphotosynthetic Power Cells

Kuruvinashetti

Pakkiriswami

Packirisamy

2021

Adv Energy and Sustain Res

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The necessity for sustainable energy production has driven the rapid development of technologies to harness solar energy effectively. The microphotosynthetic power cells (μPSC) aim to harness solar energy from living photosynthetic cells. Currently, the power density of the μPSC is low, due to several factors. One of the major impediments and challenges of the μPSC is its lower charge transfer efficiency between the photosynthetic microorganisms and the electrodes. Herein, the proposed strategy explores the interaction of gold nanoparticles (Au NPs) with photosynthetic microorganisms for enhanced power generation from the μPSC. Herein, the intracellular biocompatible, efficient light absorbers in the form of Au NPs are introduced. Translocation of gold colloidal solution of 25 μL of 50 μg mL−1 (253.8 μmol mL−1) concentration into 2 mL whole liquid culture of algal cells (Chlamydomonas reinhardtii: ≈1 million cells mL−1) enhances operational quantum yield (ϕ0) of the algal cells by 30.2% and power generation capability by 15.2% in μPSCs. Internalized Au NPs in the algal cells quench chlorophyll fluorescence, thereby contributing to increased photosynthetic efficiency. With multiple advantages such as light absorption capability, biocompatibility, and ability to transfer the electrons, Au NPs can efficiently harvest sunlight for enhanced power generation from the μPSC.

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Perspective—Micro Photosynthetic Power Cells

Cited by 15 publications

References 64 publications

Feasibility Studies of Micro Photosynthetic Power Cells as a Competitor of Photovoltaic Cells for Low and Ultra-Low Power IoT Applications

Feasibility Studies of Micro Photosynthetic Power Cells as a Competitor of Photovoltaic Cells for Low and Ultra-Low Power IoT Applications

Optimised spectral effects of programmable LED arrays (PLA)s on bioelectricity generation from algal-biophotovoltaic devices

Gold Nanoparticle Interaction in Algae Enhancing Quantum Efficiency and Power Generation in Microphotosynthetic Power Cells

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