Hybrid devices for simultaneous energy conversion and storage

Transcription

1 Sergey Shleev Hybrid devices for simultaneous energy conversion and storage Department of Biomedical Science Faculty of Health and Society Malmö University Malmö Sweden INNOVATION SUMMIT ON SUSTAINABLE ENERGY STORAGE April 6, 2017

2 cells voltaic Fuel Photo- Nuclear- Piezo- Thermo- Chemical Nuclear Mechanical Solar Thermal Electric Energy

3 Fuel Cell Advantages high theoretical efficiency possibility for miniaturization production of pure water from the cathodic process high energy density and many more

4 Electrical power generation devices (continuous power supply to the global energy pool) Fuel cell Photovoltaic cell Nuclearvoltaic cell Thermovoltaic cells

5 Electrical power generation devices (continuous power supply to the global energy pool) Electromechanical systems such as generators 99 of global electric energy! efficiency on average J

6 Direct energy conversion Abundant elements!

7 Direct energy conversion Abundant elements Renewable catalysts! Living cells Organelles Enzymes

8 Biofuel cells Bio-solar cells

9 Electrical power storage Batteries Primary Secondary Capacitors Conventional Supercapacitors

10 Closed Cells versus Fuel Cell Nowadays often called batteries closed system open system Total reaction: 2 H 2 + O 2 = 2 H 2 O

11 Zn/Air battery? Mass production!

12 Encyclopedia Britannica Battery, in electricity and electrochemistry, in strict usage, designates an assembly of two or more galvanic cells capable to convert chemical energy directly into electrical energy.

13 Galvanic cells Batteries

14 Galvanic Cells Primary one-time usage Secondary many times usage (accumulators) Several cells in series (to increase voltage) battery Pimary battery Secondary battery

15 Encyclopedia Britannica Capacitor, device for storing electrical energy, consisting of two conductors in close proximity and insulated from each other.

16 Capacitor, device for storing electrical energy, consisting of two conductors in close proximity and insulated from each other. Conventional capacitor Electronic and ionic isolation Electronic isolation

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18 Capacitors Conventional Supercapacitors (electrochemical) Electrochemical capacitors Double-layer capacitors C dl 0 C = 0 Pseudocapacitors C dl 0 C 0 Hybrid capacitors

19 Fuel Cells vs. Capacitors versus Batteries

20 Flexible devices Energy storage Energy generation

21 General importance of hybridisation Simplifies the design and enables more efficent and minature power supply Matches the power need of many electrical applications

22 Nano - Composite nanoparticles PANI-CNTs nanotubes PEDOT-graphene/CNTs/GOx graphene

23 Double function electrodes simultaneous generation and storage of electric power

24 Swedish Patent Application (April 2013) SE2013/ PCT EP2014/ CHARGE-STORING FUEL CELL

25 Self-charging Hybrid Electric Power Device 1400 µw cm µw cm -2 Charge/discharge curves of a membrane-based HEPD consisting of a PANI/CNTs based anode and a PtNPs/PPy/CNTs based cathode in separate solutions with ph device equilibration in air saturated buffer, without ascorbate, 2 addition of 1 mm ascorbic acid to the anolyte, 3 discharging at a constant load of 10 kω, 4 disconnecting the load, 5 O 2 bubbling through cathodic compartment; 6 - discharging at a constant load of 10 kω, 7 disconnecting the load, 8 increasing the concentration of ascorbic acid to 2 mm, 9 discharging at a constant load of 5 kω, 10 disconnecting the load; 11- discharging at a constant load of 2 kω; 12 - disconnecting the load; 13 - discharging at a constant load of 2 kω. Characteristics of membrane FC operating separate solutions with ph 7.4. Catholyte was O 2 saturated, anolyte contained 1 mm ascorbic acid

26 The very first intrinsic hybrid device Recieved October

27 Nano - Bio - Composite nanoparticles proteins PANI-CNTs nanotubes organelle PEDOT-graphene/CNTs/GOx graphene cell

28 The very first self-charging biosupercapacitor 1 mw cm -2 vs mw cm -2 Biocapacitor vs. Biofuel cell ChemElectroChem 1 (2014) 1798

29 Electrochemical biocapacitors Double-layer biocapacitors C dl 0 C 0 Pseudobiocapacitors C dl 0 C 0 Hybrid biocapacitors ChemElectroChem 2 (2014) 343

30 Fuel Cells vs. Capacitors versus Batteries Biosupercapacitors? Biofuel cells

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32 Solar energy Intermittent power production Green solar energy

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35 Implantable power sources Intermittent power consumption Implantable cardioverter defibrillator by Medtronic, delivering a highpower pulse when needed

36 Wearable power sources Intermittent power generation/consumption Hybrid devices!

37 Planned future studies: Flexible and renewable biological electric power sources based on nanobiocomposite materials focusing on fundamental studies Multifunctional biological power sources based on flexible materials for wearable and renewable energy supplies implementation in wearables High performance cost efficient photoelectric biosupercapacitors reproducibly fabricated with industry scale throughput industry collaboration

38 THANKS FOR LISTENING! Financial support from