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Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 132
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: 8192
Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 290
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: 8192
Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 164
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: 8192
Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 233
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: 8192
Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 313
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: 8192
Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 354
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: Warning
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Filename: Session/Session.php
Line Number: 284
Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Severity: Warning
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Filename: Session/Session.php
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Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Filename: Session/Session.php
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
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Function: require_once
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
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Function: __construct
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Line: 332
Function: require_once
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Line Number: 318
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
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Function: require_once
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
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Line: 332
Function: require_once
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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Backtrace:
File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
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Function: __construct
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Line: 332
Function: require_once
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Line Number: 143
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File: /home2/amanaayg/public_html/lithiumionbattery.org/application/controllers/Activities.php
Line: 6
Function: __construct
File: /home2/amanaayg/public_html/lithiumionbattery.org/index.php
Line: 332
Function: require_once
Lithium-ion batteries: How do they work?
Lithium-ion batteries: How do they work?
VIDEO
In between are a positive electrode, the cathode, and a negative electrode, the anode. The cathode consists of alithium metal oxide, the anode is a graphite layer. In order for the Li ions to migrate into the cell, the cell is filled with an electrolyte. The electrolyte of the battery must be extremely clean.
How Lithium-ion batteries are made