Solid electrolyte ni gaw hka n-gun dat ni hta grau kaja ai lam law law nga ai. Ga shadawn, charge galaw ai hte discharge galaw ai shaloi electrode deformation hpe shayawm ya lu nna, shim lum lam hpe grau kaja hkra galaw ya lu ai. Shanhte hta mung grai kaja ai ngang grin ai lam nga ai, galaw na matu loi ai, 2019 ning a rawt jat galu kaba wa ai lam mung nga ai.lithiumdendrites ni hpe hka ja ai-n lawm ai ngang kang ai polymer electrolyte ni hta kaji dik htum galaw lu ai.
Polymer wan n-gun dat ni hpe sawk sagawn ai lam hpe 1973 ning kaw nna galaw hpang wa ai rai nna, dai aten hta Fenton et al. alkali nlung ni lawm ai polyethylene oxide (PEO) n-gun ni gaw ion ni hpe shalai ya lu ai hpe mu tam wa ai. Dai aten kaw nna, polymer electrolyte ni hpe grai myit lawm wa sai.
1978 ning hta Dr. Armand gaw PEO- hpe madung tawn ai solid-state polymer wan n-gun hpe battery ni a matu wan n-gun hku jai lang mai ai ngu tau hkrau tsun da ai.
Hpang na shaning 20 ning laman, sawk sagawn ai ni gaw, battery kata na electrolyte-electrode lamu ga jarit a physicochemical atsam ni hpe ion shalai ai lam a ladat hpe grai shakut shaja nna, kaja ai rawt jat lam ni hpe lu la ma ai.
Lithium-ion battery ni hta ngang kang ai polymer n-gun dat ni hpe lang nna, n-gun dat ni hte seng nna hka pru ai manghkang ni hpe pat shingdang lu ai.
Polymers ni hpe galaw na matu loi ai hte kaji kajaw sha galaw mai ai. Plasticity grai law ai majaw, polymer ni hpe lang nna mung, n-gun n rawng ai-film battery ni hpe galaw mai ai. Battery hkrang amyu myu hpe polymer electrolytes hpe lang nna galaw shapraw lu ai majaw, jai lang ra ai lam amyu myu hpe hkan sa lu ai. Dai hta n-ga, polymer electrolytes ni gaw, ntsin electrolyte ni hte shingdaw yang, grau tsaw ai chemical, electrochemical, hte thermal stability ni hpe jaw ya lu ai, electrode ni hte maga mi de n-gun n law ai hte bungli galaw ai nbung n-gun grau dam lada ai. Polymer electrolytes ni a n-gun atsam gaw, charge hte discharge galaw ai shaloi, electrode ni a volume galai shai ai lam hpe pat shingdang ya lu nna, battery a hkrang hpe ngang grin hkra galaw ya lu ai. Dai majaw, liquid-ion battery ni hpe hpaga lam hta jai lang ngut ai hpang, polymer electrolytes hpe madung tawn ai lithium-ion battery hpaji masa gaw lawan ladan rawt jat wa nna, awng dang ai hpaga lam hta jai lang lu na re.
Polymer electrolytes hpe garan ginhka ai ladat law law nga ai, madang ni mung n bung ai. Ya aten hta, ngang kang ai polymer n-gun dat ni hpe madung hku nna jai lang ai n-gun dat amyu hte maren garan ginhka ai, ga shadawn, mying kaba dik ai polyether- hpe madung tawn ai polyethylene oxide (PEO), dai zawn sha, polymethyl methacrylate (PMMA) hte polyacrylonitrile (PAN) ni hpe mung garan ginhka nga ai. Madung hku tsun ga nga yang, polymer electrolyte ni hpe lithium-ion battery ni hta tatut jai lang na matu lawu na masa ni hpe hkan sa ra ai.
Ionic htawt sit ai atsam tsaw ai
Myit yu hpa lithium-ion htawt sit ai jahpan
Kaja ai jak n-gun
Dam lada ai wan jak hkuwawt
Grai kaja ai tsi mawan hte katsi ai n-gun
Ya aten na polymer electrolyte masa ni hta, polymer ni gaw nta kata na nbung katsi ai shara hta grai dan dawng ai crystallinity hpe madun dan ai majaw, nta kata na nbung katsi ai shara hta ngang kang ai polymer wan jak ni a conductivity gaw hka n-gun rawng ai wan n-gun ni hta grau yawm ai hpe sang lang dan nga ai. Polymer ni hta na crystal law malawng gaw spherulites ni rai nna, shanhte a lapran hta amorphous ginra ni nga ai. Ndai amorphous ginra ni hta madung hku nna lithium-ion n-gun dat ai lam byin pru wa ai ngu nna, yawng kam ma ai.
Dai majaw, polymer ni a phase structure hpe chye na ai gaw, lithium-ion n-gun dat ai lam hpe hkaja na matu karum ya lu ai.
Binary polymer electrolyte system ni a matu, n-gun n rawng ai ginra ni hte n-gun n rawng ai ginra ngu ai n-gun lahkawng lawm ai. Crystalline ginra ni byin pru wa ai lam gaw kinetically driven rai nna, laksan hkyen lajang ai masa hte aten hte hkrak matut mahkai nga ai. Grau nna tsun ga nga yang, polymer system hta crystalline ginra ni nga ai majaw, ndai ginra ni a masa n bung ai hte grai shai hkat ai majaw, polymer electrolyte amyu myu a conductivity hpe shingdaw yu ai gaw grai hpaji masa hku n mai byin ai. Raitim, masa nkau mi hta, crystalline ginra ni a rawt jat galu kaba wa ai lam gaw n-gun n rawng ai rai nna, ionic conductivity hta n bung ai lam gaw hkap la mai ai shadawn shadang kata kaw rai yang, shingdaw ai conductivity hpe hkap la mai ai. Ndai lam a majaw anhte gaw n bung ai mahtai ni hpe shingdaw chye ga ai.
Polymer kata na spherulites ni a rawt jat galu kaba wa ai lam gaw aten- hta hkan nna re majaw, polymer a hka lim ai shara npu na nbung katsi ai shara ni hta ionic conductivity mung aten- hta hkan nna rai nga ai. Dai hta n-ga, polymer electrolytes ni a lithium-ion n-gun gaw, katsi ai n-gun, katsi ai n-gun, shimlum ai aten ni hte matut mahkai nga ai. Ga shadawn, shimlum ai aten grau galu ai majaw, grau hkum tsup ai polymer crystal structure hte crystallinity grau tsaw wa ai majaw, shimlum ai aten law wa ai hte maren, ionic conductivity hpe loi loi hte yawm mat wa shangun ai. Dai hte maren, n-gun yawm ai hku katsi ai gaw, grau hkum tsup ai crystallization byin shangun nna, dai hte maren, ionic conductivity mung, loi loi hte yawm mat wa na re.
PEO hte LiCIO4 a binary solid polymer electrolyte hpe ga shadawn hku la yang, ndai hkrang hta n-gun law law rawng ai hkrang ni lawm ai. Langai, LiClO4 hte PEO gaw PEO6-LiCIO4, PEO3{25}}LiCIO4, PEO2-LiCIO4, PEO-LiClO4 ni lawm ai n-gun amyu myu hpe hpaw shabawn lu ai. Dai ni hta, O:Li=10:1 byin ai shaloi, PEO6-LiCIO4 gaw PEO hte rau eutectic byin wa lu ai, n-gun 50℃. Dai hta n-ga, nbung hpe 160℃de sharawt dat yang, eutectic kaba byin wa lu ai. Katsi ai aten hta, eutectic kaba gaw spherulites amyu masum hpe shapraw na re: shawng na amyu gaw 120℃jan hta hka lim nna, sau law law lawm ai; lahkawng ngu na amyu gaw 45 hte 60℃lapran hta lwi mat nna, ntsin n law ai, loi loi hte byin pru wa ai; masum ngu na amyu gaw, host polymer hta loi mi npu na melting point nga ai rai nna, grau lawan ai hku byin pru wa ai. Hpaji sawk sagawn ai lam ni hta: shawng nnan na spherulite amyu gaw PEO3-LiCIO4 rai na re; lahkawng ngu na amyu gaw PEO-LiCIO4 hte PEO3-LiCIO4 n-gun ni hpe kayau kaya galaw ai rai na re; hte masum ngu na amyu gaw PEO hkum nan hte bung ai. Dai hta n-ga, lithium sau rawng ai hte n-gun rawng ai hku galaw ai ladat lahkawng yan gaw, npawt nhpang galai shai ai lam ni hpe byin shangun lu ai.
Polymer electrolytes ngu ai gaw, polymer ni hpe matrix hku jai lang nna, polymer ni hte magri sau ni a lapran byin pru wa ai, n-gun rawng ai polymer arung arai ni a hpan langai mi rai nga ai. Polymer matrix hta hkan nna, n-gun rawng ai polymer wan n-gun ni hta PEO-madung ai polymer wan n-gun, PVDE-madung ai polymer wan n-gun, PMMA-madung ai polymer wan n-gun, hte kaga ni lawm ai. Inorganic solid-state n-gun dat ni hte n bung ai sha, polymer n-gun dat ni gaw n-gun n law ai, n-gun n rawng ai, n-gun n rawng ai. Inorganic solid-state n-gun dat ni zawn, polymer n-gun dat ni mung lithium-ion battery ni hta ion ni hpe woi awn ai sha n-ga, battery ni hpe garan ginhka ai hku nna mung galaw ya ai. Polymer electrolyte ni hta madung hku nna lawu na zawn re ai akyu ni nga ai.
Dai gaw lithium-ion battery ni hta lithium dendrite byin pru wa ai manghkang hpe atsawm sha hparan ya lu ai .
Lithium-ion battery ni hpe charge galaw ai hte charge galaw ai shaloi byin wa ai hkrang nsam hpe atsawm sha hkap la lu ai .
Dai gaw lithium-ion battery ni hta na electrolyte hte electrode arung arai ni a lapran na chemical reaction hpe shayawm ya lu ai (sh) yeng seng kau ya lu ai .
Shi gaw shim lum ai atsam grai nga ai .
PEO hte n bung ai lithium sau (LBF4, LIPF6, LiCFSO4, hte LiASF6 ni lawm ai) kaw na byin pru wa ai complex ni gaw madung hku nna LiCIO4 byin pru wa ai hte bung ai, lachyum gaw lithium sau amyu gaw PEO hte byin pru wa ai complex amyu hpe hkrak n hkra ai. Grau nna, LiBF gaw PEO hte rau PEO4-LIBF hte PEO,S-LiBF ngu ai n-gun lahkawng hpe hpaw shabawn lu ai. O/Li ratio 16 hte 20 lapran rai yang, PEO2.5-LIBF4 gaw PEO hte rau eutectic byin wa lu ai. LPF6 gaw PEO hte rau PEO6-LiPF6 hte PEO:-LiPF6 ngu ai n-gun lahkawng hpe mung hpaw lu ai. PEO hte LiASF6 byin pru wa ai complex lahkawng gaw LiPF6 hte bung ai raitim, melting points ni gaw grau tsaw ai. Anion kaba ai lithium sau ni mung PEO hte complex byin wa lu ai, raitim, kinetics gaw grau n-gun yawm ai. Dai hta n-ga, dai n-gun gaw crystal rawt jat galu kaba wa ai lam hpe mung loi mi hkra machyi shangun ai. N-gun grau ja ai gaw spherulite rawt jat galu kaba wa na matu karum ya nna, amorphous ginra hpe shayawm ya ai, dai hte maren lithium-ion n-gun hpe mung shayawm ya ai.